I own an E986 for one month, I bought it from Greece but it must be from Germany. My problem is that after rooting and installing many custom roms and stock roms I dont have 4g signal. I have tried everything, hidden menus, 4g switchers, flashing modems from allover the world just in case something works, flashing back to stock with lg flash tool, I tried stock 4.1.2 and 4.4.2, I erased APN's and added again......and many many more. Can anybody please help me? I will try any ideas, one last thing, the signal of the mobile carrier is depending only on the modem I install or are there any other parameters that I should try to flash. Thanks in advance!!!!
tzamakos said:
I own an E986 for one month, I bought it from Greece but it must be from Germany. My problem is that after rooting and installing many custom roms and stock roms I dont have 4g signal. I have tried everything, hidden menus, 4g switchers, flashing modems from allover the world just in case something works, flashing back to stock with lg flash tool, I tried stock 4.1.2 and 4.4.2, I erased APN's and added again......and many many more. Can anybody please help me? I will try any ideas, one last thing, the signal of the mobile carrier is depending only on the modem I install or are there any other parameters that I should try to flash. Thanks in advance!!!!
Click to expand...
Click to collapse
If you've flashed back to a stock TOT/KDZ and still have no 4G, then it seems like it cannot be any software setting other than APN configuration, and if you're certain that's right, then it could be worth it to try a different SIM card.
What else could it be? If you've flashed a correct stock image for your model, then you've ruled out software issues other than configuration, and if it once worked with the same software configuration (APN settings, etc.) then what else could it be but hardware, something tangible?
culot said:
If you've flashed back to a stock TOT/KDZ and still have no 4G, then it seems like it cannot be any software setting other than APN configuration, and if you're certain that's right, then it could be worth it to try a different SIM card.
What else could it be? If you've flashed a correct stock image for your model, then you've ruled out software issues other than configuration, and if it once worked with the same software configuration (APN settings, etc.) then what else could it be but hardware, something tangible?
Click to expand...
Click to collapse
So what do you believe? Do you think that I have a hardware issue? But how on earth is it possible to have 3g and H signal but no 4g. I have flashed every stock rom for my device through kdz method but I haven't tried the tot method, do you believe that this might be the solution? I have even bought another sim card from my provider but no luck, should I try another provider? Phewwww I ask a lot I know please forgive me it' s that I have never faced a problem before that I couldn't overcome......
tzamakos said:
So what do you believe? Do you think that I have a hardware issue? But how on earth is it possible to have 3g and H signal but no 4g. I have flashed every stock rom for my device through kdz method but I haven't tried the tot method, do you believe that this might be the solution? I have even bought another sim card from my provider but no luck, should I try another provider? Phewwww I ask a lot I know please forgive me it' s that I have never faced a problem before that I couldn't overcome......
Click to expand...
Click to collapse
KDZ is sufficient. I don't see how TOT would make any difference. Maybe you could try just to familiarize yourself with the method. I don't see how that could make any difference, but maybe I'm more ignorant that I realize (this happens often enough).
So you've had 4G on that phone with that same provider before? WIth the same plan? If it's not software, and not hardware, then maybe it's to do with the carrier? I think you can be pretty safe that it's not software if you've got a stock image flashed on there, and if your APN settings are spot-on. That would leave:
- SIM card
- Phone hardware
- Carrier
- ?what else?
If it's not software, as in if you've got a fresh stock image flashed, then what else could it be but hardware? Maybe I'm missing something.. dunno.
Have you tried the SIM cards in any other phone to see if 4G works?
culot said:
KDZ is sufficient. I don't see how TOT would make any difference. Maybe you could try just to familiarize yourself with the method. I don't see how that could make any difference, but maybe I'm more ignorant that I realize (this happens often enough).
So you've had 4G on that phone with that same provider before? WIth the same plan? If it's not software, and not hardware, then maybe it's to do with the carrier? I think you can be pretty safe that it's not software if you've got a stock image flashed on there, and if your APN settings are spot-on. That would leave:
- SIM card
- Phone hardware
- Carrier
- ?what else?
If it's not software, as in if you've got a fresh stock image flashed, then what else could it be but hardware? Maybe I'm missing something.. dunno.
Have you tried the SIM cards in any other phone to see if 4G works?
Click to expand...
Click to collapse
To tell you the truth I haven't tried the sim to another phone because I don't have another 4g phone, I have contacted my carrier and they confirmed that I have 4g signal. Who knows, I cant understand how it could be a hardware issue since I have 3g and H signal, do you know if apart from modem is there anything else that I could flash in order to have better signal reception? For example flashing kernel or something else....
tzamakos said:
To tell you the truth I haven't tried the sim to another phone because I don't have another 4g phone, I have contacted my carrier and they confirmed that I have 4g signal. Who knows, I cant understand how it could be a hardware issue since I have 3g and H signal, do you know if apart from modem is there anything else that I could flash in order to have better signal reception? For example flashing kernel or something else....
Click to expand...
Click to collapse
Maybe visit some cell phone shop and ask if you can ram your SIM into one of their phones for a minute, to test.
If you've flashed a KDZ, I don't see what else you could do, software-wise, on top of that. Have you ventured very far into the hidden diagnostic menus? I know there's tests in there for most everything, ones that show if you've got a 4G connection and exactly what detailed connection info is available.
EDIT: Oh, you can look into your service manual here. Maybe you could pull a MacGyver, yes?
culot said:
Maybe visit some cell phone shop and ask if you can ram your SIM into one of their phones for a minute, to test.
If you've flashed a KDZ, I don't see what else you could do, software-wise, on top of that. Have you ventured very far into the hidden diagnostic menus? I know there's tests in there for most everything, ones that show if you've got a 4G connection and exactly what detailed connection info is available.
EDIT: Oh, you can look into your service manual here. Maybe you could pull a MacGyver, yes?
Click to expand...
Click to collapse
I followed your advice, I tried my sim to another 4g phone and it works perfectly, I even bought a sim card from another provider just in case but again no luck, 4g signal wont show on. The hidden menu is something that I have discovered but dont know what values to change, I just checked that lte is enabled. My only hope is to find the original stock rom for Greece named e98610c.kdz I believe to flash it and see if it works, but I cant find it anywhere. My phone is from Germany though, another option I have is to find a second stock rom from Germany different than the e98610i.kdz, I have seen an e98610a.kdz, but I wasnt able to find and download it. Any help would be very nice, but thanks anyway.
culot said:
Maybe visit some cell phone shop and ask if you can ram your SIM into one of their phones for a minute, to test.
If you've flashed a KDZ, I don't see what else you could do, software-wise, on top of that. Have you ventured very far into the hidden diagnostic menus? I know there's tests in there for most everything, ones that show if you've got a 4G connection and exactly what detailed connection info is available.
EDIT: Oh, you can look into your service manual here. Maybe you could pull a MacGyver, yes?
Click to expand...
Click to collapse
Hallo again, one more question, is it possible that I have flashed a modem that is capable of 4g but in bandwith that my provider in Greece doen't support?
tzamakos said:
Hallo again, one more question, is it possible that I have flashed a modem that is capable of 4g but in bandwith that my provider in Greece doen't support?
Click to expand...
Click to collapse
I don't think so. If you've flashed back to stock with a KDZ/TOT, then you're golden.
Who is your Grecian provider? What are your current APN settings?
culot said:
I don't think so. If you've flashed back to stock with a KDZ/TOT, then you're golden.
Who is your Grecian provider? What are your current APN settings?
Click to expand...
Click to collapse
My Greek provider is named Cosmote and my APN settings are the following
Name Cosmote Internet
APN internet
MCC 202
MNC 01
APN type default
Hope this tells you something, looking forward to replying me :
tzamakos said:
My Greek provider is named Cosmote and my APN settings are the following
Name Cosmote Internet
APN internet
MCC 202
MNC 01
APN type default
Hope this tells you something, looking forward to replying me :
Click to expand...
Click to collapse
Did you find your e986 Greek stock image yet? Just curious. I swear it sounds like a hardware problem though. Dunno.
culot said:
Did you find your e986 Greek stock image yet? Just curious. I swear it sounds like a hardware problem though. Dunno.
Click to expand...
Click to collapse
No unfortunately I couldn't find anything, I now flash some 4.4.2 rom from e988 just in case.....
Related
I have a MK16a and have happily unlocked the bootloader and flashed a new kernel over the stock ROM; I have the latest baseband installed.
Any time I try to flash another ROM, I can't get mobile data to work. I show as Roaming, and can connect to GSM but nothing else. APN settings are good. Flashing a different kernel doesn't seem to help either. I tried re-flashing the stock ROM and then a kernel and then the ROM I wanted, didn't work. I tried doing a Factory Reset over the stock ROM that works and flashing another ROM, didn't work. If I restore the backup I made before doing any of this, everything works again - I just can't get any other ROMs to work!
I've searched XDA and other sites pretty extensively and I'm not coming up with anything. Anyone got any ideas?
If you can, ask operator to change your SIM. Should be a few minutes process at the store. I had same issue a year ago as well, although I left the country already, so it was not a problem.
Just a note, that all questions should be posted in Q&A section.
Someguyfromhell said:
If you can, ask operator to change your SIM. Should be a few minutes process at the store. I had same issue a year ago as well, although I left the country already, so it was not a problem.
Interesting idea. I know the SIM works ok with the carrier-provided ROM on the phone, but it is a fairly old SIM card. Night be worth trying, tahnks for the suggestion!
Someguyfromhell said:
Just a note, that all questions should be posted in Q&A section.
Click to expand...
Click to collapse
*facepalm* Yes, of course they should.
Click to expand...
Click to collapse
Any luck yet?
If still same situation, make sure you are using baseband from MK16a firmware, not MK16i.
If your carrier is so-called virtual network operator, you may need to enable national data roaming in the settings. It's available in the mobile network settings at least in CyanogenMod ROMs.
--Ere
Someguyfromhell said:
If you can, ask operator to change your SIM.
Click to expand...
Click to collapse
Finally got around to doing this! Updating the SIM (which we figured out was probably between 5 to 8 years old) has resolved the issue.
I had my phone working fine on 2.3.6, but I have recently flashed my ROM.
I followed these EXACT instructions (http://www.lorenzobettini.it/2013/08/update-samsung-galaxy-wonder-i8150-to-android-jelly-bean/) and afterwards, I couldn't see Virgin Mobile UK as a Network Operator to connect to. So I can only use WiFi. (However, I saw T-Mobile, Orange, Vodafone and Three. It automatically connected me to T-Mobile, but nothing worked)
I thought it may be a problem with the ROM, so I used the Stable release of this: http://forum.xda-developers.com/showthread.php?t=2120340 ... I have the same problem.
I've now tried a third: http://forum.xda-developers.com/showthread.php?t=2401757 ... still doesn't work.
It can't be the ROMs... Could I need to upgrade my baseband? I don't really know what a baseband is, just what hours of Googling has brought up.
How can I fix this?
WazzleHD said:
I had my phone working fine on 2.3.6, but I have recently flashed my ROM.
I followed these EXACT instructions (http://www.lorenzobettini.it/2013/08/update-samsung-galaxy-wonder-i8150-to-android-jelly-bean/) and afterwards, I couldn't see Virgin Mobile UK as a Network Operator to connect to. So I can only use WiFi. (However, I saw T-Mobile, Orange, Vodafone and Three. It automatically connected me to T-Mobile, but nothing worked)
I thought it may be a problem with the ROM, so I used the Stable release of this: http://forum.xda-developers.com/showthread.php?t=2120340 ... I have the same problem.
I've now tried a third: http://forum.xda-developers.com/showthread.php?t=2401757 ... still doesn't work.
It can't be the ROMs... Could I need to upgrade my baseband? I don't really know what a baseband is, just what hours of Googling has brought up.
How can I fix this?
Click to expand...
Click to collapse
try changing ur baseband/ modem with the one intended for ur country/ region.
dec0der said:
try changing ur baseband/ modem with the one intended for ur country/ region.
Click to expand...
Click to collapse
okay, if this goes wrong, can i restore from my backup on CWM and it'll be fine? also, where ís a tutorial for this?
no need to change operator
Virgin media pay T-mobile/EE to use their network all you got to do i change the apn on your phone manually to get your data and you will be fine
i know this becase i have been doing for the last few months and had no problems
spawnofdonny said:
Virgin media pay T-mobile/EE to use their network all you got to do i change the apn on your phone manually to get your data and you will be fine
i know this becase i have been doing for the last few months and had no problems
Click to expand...
Click to collapse
Okay, will flash a new ROM and will try now.
EDIT: It didn't work for me...
EDIT2: Got it working, used a different APN... Thank you SO much, you're a life saver!
Hi everybody,
I'm totally new in this flashing world and I was messing around with my new Xperia Z1 Compact trying to get Kit Kat installed because when I bought the phone it came with JB 4.3. I flashed Latest KitKat Nordic 14.3.A.0.757 unbranded, and everything worked like a charm until I discovered that I lost 4G connection (It only connects to 3G). I went to settings to select network, and LTE is checked.
I was reading about this matter and it seems that nordic ROM doesn't support LTE Band 7 (2600Mhz) which is the band in my carrier. I tried flashing Central Europe Rom and Global rom for journalists found here in the forums. None of them seems to support my LTE band. I want to know if there is any way to recover 4G changing any setting or if you know a link to any generic ROM compatible with LTE Band 7 (2600Mhz), or if there is any way to revert to my original Jellybean 4.3 ROM using PC Companion or Sony Update Service. Any help will be very apreciated.
Hello,
I am using the Generic UK .757 on a BAND4 LTE network in Canada.
you have checked off the first thing to do from the checklist..
second is to make sure your APN settings are correct.
All these are simple, but if still no luck, some labour is in order.
Need to do full wipe and clean re-install
IF you are not rooted, just launch Sony PC companion with the phone NOT CONNECTED and do a repair. It should by default take you to KK
At the time of flashing, You probably had the wrong boxes checked and unchecked in the WIPE and Exclude boxes..
I'll try the two options
Thanks guys for the responses.
First I'll try to flask UK ROM to see if finally I get kitkat working on my phone. If this doesn't work I'll take the second option with PC Companion to restore the original ROM. I'll post the results.
It seems this rom doesn't work for me
GuizmoPhil said:
Hello,
I am using the Generic UK .757 on a BAND4 LTE network in Canada.
Click to expand...
Click to collapse
Hi Phil,
I found UK rom in this forum ver. .681 and flashed it, then I downloaded OTA update to .757. So far the problem remains. I discovered that I was wrong about My LTE Band, is 7 not 4. Apparently there's a carrier in UK with band [email protected] same as here (Colombia), so theorically this rom should work, but this is not the case. I'm trying to change more settings without luck. If you know something to help me, it would be very appreciated. Thanks.
Y2j-Hotaru said:
Hi Phil,
I found UK rom in this forum ver. .681 and flashed it, then I downloaded OTA update to .757. So far the problem remains. I discovered that I was wrong about My LTE Band, is 7 not 4. Apparently there's a carrier in UK with band [email protected] same as here (Colombia), so theorically this rom should work, but this is not the case. I'm trying to change more settings without luck. If you know something to help me, it would be very appreciated. Thanks.
Click to expand...
Click to collapse
Try changing it from the ussd *#*#4636#*#*
Sent from my C6902 using XDA Free mobile app
not able to download original rom
jewelkobayashi said:
you have checked off the first thing to do from the checklist..
second is to make sure your APN settings are correct.
All these are simple, but if still no luck, some labour is in order.
Need to do full wipe and clean re-install
IF you are not rooted, just launch Sony PC companion with the phone NOT CONNECTED and do a repair. It should by default take you to KK
At the time of flashing, You probably had the wrong boxes checked and unchecked in the WIPE and Exclude boxes..
Click to expand...
Click to collapse
Hi jewelkobayashi,
I tried the method you wrote, but, despite the phone being disconnected, it downloaded the same ROM that I recently have flashed (GLOBAL .757 commercial and Journalist). Is there any other way to download the original Phone ROM . I know my original ROM is GLOBAL-14.2.A.1.114 and the customization number is 1281-3723. I haven't found any site to download this exact firmware. If you know something, it would be very appreciated. Thanks in advance.
Are you sure about your customization number? Because it gets changed if you flash another firmware. Here's everything you need to know: http://forum.xda-developers.com/showthread.php?p=52011642 to download your firmware. By the way, what's your country, branding and SI-Number (so I can add your customization number to the list)?
Y2j-Hotaru said:
Hi everybody,
I'm totally new in this flashing world and I was messing around with my new Xperia Z1 Compact trying to get Kit Kat installed because when I bought the phone it came with JB 4.3. I flashed Latest KitKat Nordic 14.3.A.0.757 unbranded, and everything worked like a charm until I discovered that I lost 4G connection (It only connects to 3G). I went to settings to select network, and LTE is checked.
I was reading about this matter and it seems that nordic ROM doesn't support LTE Band 7 (2600Mhz) which is the band in my carrier. I tried flashing Central Europe Rom and Global rom for journalists found here in the forums. None of them seems to support my LTE band. I want to know if there is any way to recover 4G changing any setting or if you know a link to any generic ROM compatible with LTE Band 7 (2600Mhz), or if there is any way to revert to my original Jellybean 4.3 ROM using PC Companion or Sony Update Service. Any help will be very apreciated.
Click to expand...
Click to collapse
Stop flashing random ROMs and check your settings! Unless you have a different model phone than the rest of us (there are three, D5503, M51w and SO-02F), then ANY Z1C (D5503) ROM will work, but they come with different APN lists as bundling every carrier in the worlds APN settings would be a waste of space. Go to Settings > Mobile Networks > Access Point Names, and edit or create the correct APN in there. Look at a friends phone or on your carriers website for the correct settings. This is your problem, no doubt about it.
Please note that some carriers (mine included) have a special APN for LTE. E.g. standard is internet.tele2.se, LTE is 4g.tele2.se on my carrier.
...I have no idea where you're getting your data from, because literally every LTE network in the Nordics uses band 7.
Finally it worked
Rekoil said:
Stop flashing random ROMs and check your settings! Unless you have a different model phone than the rest of us (there are three, D5503, M51w and SO-02F), then ANY Z1C (D5503) ROM will work, but they come with different APN lists as bundling every carrier in the worlds APN settings would be a waste of space. Go to Settings > Mobile Networks > Access Point Names, and edit or create the correct APN in there. Look at a friends phone or on your carriers website for the correct settings. This is your problem, no doubt about it.
Please note that some carriers (mine included) have a special APN for LTE. E.g. standard is internet.tele2.se, LTE is 4g.tele2.se on my carrier.
...I have no idea where you're getting your data from, because literally every LTE network in the Nordics uses band 7.
Click to expand...
Click to collapse
Thanks for your response. I verified APN settings with friend's phones and it was identical. Finally I called my carrier's help desk and after some try/error setups with them, they gave me an alternate APN that worked until I came home where 4G icon dissapeared again. Then, I was surprised with helpdesk response when I called them again. "There is no 4G coverage in your home area". O.O What is intriging to me is that the phone displayed 4G all the time when I just bought it (Even with restarts and wherever i was) and this changed only when I flashed a generic rom. Is just a silly assumption, but, is possible that carriers can make things like force 4G icon in their custom roms to make advertising or something like that? Just asking. Anyway, Thanks a lot for the responses.
crohit911 said:
Try changing it from the ussd *#*#4636#*#*
Sent from my C6902 using XDA Free mobile app
Click to expand...
Click to collapse
Emmm do you have a manual to how to use the ussd??
I went into it to check it out, I touched I don't know what...
And now I can no longer connect to my network provider...
(reboot doens't helps, changing to wdmca or gsm or other options doesn't changes, VPN seems ok, I have no signal... )
Help!!!
Ok, this is what I did to screw it all
Go to the ussd *#*#4643#*#*
Go to phone info
Go to setings and Select radio band
It gives me the option of GSM/UMTS band = USA Band
-> I no longer have WCDMA or GSM connection :S
(LTE still works...)
Now, how do I go back to my previous options? or does it has nothing to do with it, and the problem is something else?
EDIT> problem solved, I had to reflash my ftf by just updating the FOTA (not sure I needed this...) and the BASEBAND... Now I am back up and running again.. >D
emilic said:
Ok, this is what I did to screw it all
Go to the ussd *#*#4643#*#*
Go to phone info
Go to setings and Select radio band
It gives me the option of GSM/UMTS band = USA Band
-> I no longer have WCDMA or GSM connection :S
(LTE still works...)
Now, how do I go back to my previous options? or does it has nothing to do with it, and the problem is something else?
EDIT> problem solved, I had to reflash my ftf by just updating the FOTA (not sure I needed this...) and the BASEBAND... Now I am back up and running again.. >D
Click to expand...
Click to collapse
Good to know that your problem is solved, even better you solved it yourself. Sorry for not being able to help, I don't know about that ussd code I shall try.
Sent from my C6902 using XDA Free mobile app
crohit911 said:
Good to know that your problem is solved, even better you solved it yourself. Sorry for not being able to help, I don't know about that ussd code I shall try.
Sent from my C6902 using XDA Free mobile app
Click to expand...
Click to collapse
Actually, there's an app in Google Play that is a shortcut to this ussd code : 4G LTE SWITCH
hello ladies and gents I bought a note 3 yesterday from some dude thinking I could fix it and get a note 3 on the cheap. I was wrong the problem is hard to fix.
1 It will not register to network
it is not blacklisted or network blocked.
Ive read somewhere that after you register to many different sims it wont allow it to connect to network anymore.
what can I do I wonder as a last ditch effort if I replace the motherboard if that will work any suggestions please?
darkphate83 said:
hello ladies and gents I bought a note 3 yesterday from some dude thinking I could fix it and get a note 3 on the cheap. I was wrong the problem is hard to fix.
1 It will not register to network
it is not blacklisted or network blocked.
Ive read somewhere that after you register to many different sims it wont allow it to connect to network anymore.
what can I do I wonder as a last ditch effort if I replace the motherboard if that will work any suggestions please?
Click to expand...
Click to collapse
Have you tried updating the firmware? check the APN on the phone once you insert the sim.
You could try taking it to a T-Mobile store to see if they can get it to register. Sometimes they can activate it when you can't.
JSing said:
Have you tried updating the firmware? check the APN on the phone once you insert the sim.
Click to expand...
Click to collapse
bobbyphoenix said:
You could try taking it to a T-Mobile store to see if they can get it to register. Sometimes they can activate it when you can't.
Click to expand...
Click to collapse
I cant take it to the store i bought it from someone or at least i dont think i can it didnt have the knox counter activiated but now it does so im pretty sure the thing that resends and receives the signal is broken but im not sure where it is.
its basically a tablet :/
darkphate83 said:
I cant take it to the store i bought it from someone or at least i dont think i can it didnt have the knox counter activiated but now it does so im pretty sure the thing that resends and receives the signal is broken but im not sure where it is.
its basically a tablet :/
Click to expand...
Click to collapse
Try updating to the latest firmware. Something might have broke the modem during an upgrade. Go to www.sammobile.com
JSing said:
Try updating to the latest firmware. Something might have broke the modem during an upgrade. Go to www.sammobile.com
Click to expand...
Click to collapse
everything else works without flaw it seems just will not register on network when I try the mobile data turns off and then it just never does.
Ive flashed 2 different modems via odin tried using a att sim (still no registering)
The phone is unlocked. I dont know what to do.
Imei blocked.
trim81 said:
Imei blocked.
Click to expand...
Click to collapse
It is most definitely not imei blocked.
It feels like it might be hardware related but I have no idea how to fix that. some piece that deals only with registering on networks.
Corrupted efs folder is my other guess
trim81 said:
Corrupted efs folder is my other guess
Click to expand...
Click to collapse
can that be fixed? Ive flashed different versions of 4.4.2 and nothing seems to help changed basebands
trim81 said:
Corrupted efs folder is my other guess
Click to expand...
Click to collapse
okay I used my working note 3 to copy the efs with samsung tools then uploaded to drive installed samsung tools on the new note 3 and restored the efs from he working phone nothing changed any other ideas?
Notes:
I have 2, note 3s
1 working
1 not working
Sounds like a network block. Post a screenshot of the failing to register device after dialing *#0011#
Sent from my leanKernel 3.16 powered stock 4.4.2 SM-N900T
Here you go and thank you for helping.
Here is the working note 3 also this one is also tmobile variant but on att
Go to www.swappa.com/esn
Check the imei number.
What does it say?
Clean like I said it seems hardware related I can't figure it out.
darkphate83 said:
Here you go and thank you for helping.
Click to expand...
Click to collapse
Well, that's interesting.
If you go to settings, mobile networks, and search for networks, can you select the network and have it register?
Also double check the apn settings. I borked my hidden apn settings once and couldn't get back on the network until i wiped and reflashed full stock.
If none of that works, try also resetting the nv. Look for my thread on 900t service mode for instructions.
Sent from my leanKernel 3.16 powered stock 4.4.2 SM-N900T
I've already rebuilt the nv build. It's a family mobile sim(tmobile)
Also the apn settings I can try that again haven't changed them since I did a flashed back to stock. I doubt it will change anything usually you can still register.
oh the sim doesn't even have service anymore anyhow. Yesterday was the last day but I don't think that would change being able to register anyway.
Notice that it turns off mobile data when I try to register it may be a clue but I haven't been able to make anything of it.
http://forum.xda-developers.com/showthread.php?t=2754957
toastido I ran into your thread yesterday and did that but ill rebuild again maybe ill get lucky?
darkphate83 said:
can that be fixed? Ive flashed different versions of 4.4.2 and nothing seems to help changed basebands
Click to expand...
Click to collapse
Edited
See rebuilt again. Changed apn settings nothing.
Hi all,
Would like to thank you in advance in taking your time in reading this post. Its my first time (and post) with the XDA forums. I have a few questions I am not sure if Im doing the correct thing so Im hoping for advice for the experts here in the forum to point me in the right direction.
Technical skills - never flashed a phone before but reading the step by step instructions available in the forums.
A few information with my phone to help with troubleshooting
- Purchased with no warranty overseas because they dont sell it here in the Philippines
- Phone came with the following specs
- Android 8 with Nov 1, 2018 patch
- unlock bootloader
- software channel - retcn
- Build number - OPXS27.109-52-10
- Baseband version - M8988_20207.117.02.41-01.01R NCD
Issue:
1. 4G Network - not working at all on the local network. It seems to be able to go to 4G but cannot make outgoing or incoming phone calls/ text or mobile data.
- troubleshooted by resetting phone, changing apn with no luck. Changing it to 3G only seems to make the phone work to make voicecalls/text and mobile connection
2. Random apps crashing - namely - grab (like uber) and spotify.
- tried resetting the phone (and installed just grab app only after reset but still not working) and cleared partition cache boot mode but still no change.
Proposed solution
- installing a new stock rom - should fix the apps crashing issue and 4g issue
- installing custom rom like lineage (discarded this solution because it will disable audio mods) - i bought the moto mods JBL accessory.
questions:
1. Based on this thread - (https://forum.xda-developers.com/z2-force/how-to/how-to-return-to-stock-sprint-t3694783)
- I wish to install stock rom but Im not sure which rom to use. Do I use USC version based on the phones current build number? - OPXS27.109-52-10 or can I change to a different US carrier like verizon ?(related to next question)
2. Is there anyway to change/fix the carrier frequency so it will start accepting 4g locally here?
- will installing a stock rom with a different carrier (i.e. verizon), will that change baseband and accept other frequencies or will I brick my phone?
- Or hope the stock rom with a different patch will fix it? Ive read in forums it could just be the newer patches that giving me issues. The one available for USC is version OPXS27.109-40-7. Upon checking my local carrier and USC band frequencies, both have 5 band with 850ghz frequency available. So Im beginning to think it could be a software rather than carrier issue
3. Because the phone came with a unlocked bootloader, does that mean I will never receive OTA updates from the stock rom? I will have to manually update it when android 9 comes out?
4. software channel - retcn - does that have to do with anything with baseband or installing stock rom? Does this help in any trouble shooting? Ive seen a few threads in the forums with builds with specific software channel in other threads with specific models xt1789 - 02 or 03 or 06. I dont know if that affects stock roms?
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Maybe it would also help to show my local 4g frequencies and band number
Smart Band is here below
Frequency Protocol Class Band Number
700MHz FDD-LTE/LTE-A 4G 28
850MHz FDD-LTE/LTE-A 4G 5
1800MHz FDD-LTE/LTE-A 4G 3
2100MHz FDD-LTE/LTE-A 4G 1
2300MHz TDD-LTE 4G 40
Sorry for some newb questions and I welcome any other methods of troubleshooting or suggestions you guys can give me. I feel installing stock rom USC carrier is the solution to the problem after all the research I have done, but would like confirmation first from the experts.
Regards
Rj
On mirror.lolinet.com, 109-52-10 belongs to Retail Apac. The newest rom was uploaded is 109-52-12.
If your unlocked bootloader phone is still running the stock firmware, it will be notified when OTA comes.
I'm using an ATT with carrier unlocked so everything is fine to me. With unlocked carrier, you can use any mobile network if the phone baseband supports.
According to basic theory, if the phone was unlocked bootloader, it can be flashed fw from other variants (but there will be problem for each variant situation). It seems none of us here has done this yet.
- Check your phone model, it's on the right of the charger port.
- Open Phone, and type: *#*#4636#*#*. Choose Phone info. Check the preferred network type. If you can receive sms but cannot send, just update your SMSC number.
Most problems can be solved by flashing the stock fw.
Good luck!!!
Thank you
I didn't even know that site until you pointed it out.
I would be definitely be using the APAC software and try and flash the stock rom. I hope it would work and if not I'll try and flashing the older patch version.
Thank you
Will update you hopefully in a week as soon as I fully understand the details of flashing.
Radioband Issue, RETCN and Stockrom app Fix
mr_5kool said:
On mirror.lolinet.com, 109-52-10 belongs to Retail Apac. The newest rom was uploaded is 109-52-12.
If your unlocked bootloader phone is still running the stock firmware, it will be notified when OTA comes.
I'm using an ATT with carrier unlocked so everything is fine to me. With unlocked carrier, you can use any mobile network if the phone baseband supports.
According to basic theory, if the phone was unlocked bootloader, it can be flashed fw from other variants (but there will be problem for each variant situation). It seems none of us here has done this yet.
- Check your phone model, it's on the right of the charger port.
- Open Phone, and type: *#*#4636#*#*. Choose Phone info. Check the preferred network type. If you can receive sms but cannot send, just update your SMSC number.
Most problems can be solved by flashing the stock fw.
Good luck!!!
Click to expand...
Click to collapse
Just giving people update incase anyone is interested. I decided to follow this guide Step E (reflashing back to stock). It worked perfectly for me.
https://forum.xda-developers.com/z2-force/how-to/guides-bootloader-twrp-custom-roms-root-t3805737
As you guys know the original Build number was OPXS27.109-52-10. It turns out that was meant for model XT1789-06. It wouldnt be a big deal except my model that arrived was for XT1789-05
Regardless I followed the instructions and installed the latest firmware for OPSC27.109-52-14 for XT1789-06 (https://mirrors.lolinet.com/firmware/moto/nash/official/RETAPAC/)
Installation went fine and all the apps crashing issues went away. However 4G still didnt work.
I decided to see if installation the latest build for XT1789-05 under the link below would help.
https://mirrors.lolinet.com/firmware/moto/nash/official/RETAIL/
It felt more stable, apps not crashing, moto mods still working, and I was able to get get 4G working for internet and sms however phonecalls (both outgoing and incoming) still didnt work. 3G seems to be still stable and working fine at the moment in the Philippines. (note: I have updated APN)
I have decided to leave it alone as I got half my problem sorted (apps crashing) and moto mods still working. Can live without 4G as its mostly connected to WIFI at home and occasionally going out. Crashing apps was more important win for me.
Maybe once Android 9 officially comes out for the phone, it may fix the issue.
I have explored the option of changing the radioband but I heard of nightmares for some users when they switched to USA. I dont know what will happen if I switch to Australia radioband. (i left it to automatic at this time).
Maybe if someone else found the solution, would be happy to try it out.
I'm sorry for you when you still have some problems. My friends mostly use Z2F form T-mobile and Sprint. ATT and Verizon are less. But they work well for all functions.
There's another way you can try. It's the method for dual sim. For eg, you've a Sprint one. You modded the hardware and the 2nd SIM slot is now available. But current Sprint fw only supports single SIM. You can download a dual sim fw, extract it and copy-replace the modem from Sprint fw to dual sim one (I dont remember exactly what modem should keep, sorry). Then, flash the combination fw and the phone runs with dual sim. You can try a stable system and retcn modem or vice versa.
mr_5kool said:
I'm sorry for you when you still have some problems. My friends mostly use Z2F form T-mobile and Sprint. ATT and Verizon are less. But they work well for all functions.
There's another way you can try. It's the method for dual sim. For eg, you've a Sprint one. You modded the hardware and the 2nd SIM slot is now available. But current Sprint fw only supports single SIM. You can download a dual sim fw, extract it and copy-replace the modem from Sprint fw to dual sim one (I dont remember exactly what modem should keep, sorry). Then, flash the combination fw and the phone runs with dual sim. You can try a stable system and retcn modem or vice versa.
Click to expand...
Click to collapse
Nothing to be sorry about, actually really grateful for your input.
Already had a big win by:
1. flashing for the first time ever to stock rom and not bricking my phone in the process
2. all apps are now working
3. moto mods are working
4. alternative solution to 4g issue is available
Just letting you know the my variant already is on dual sim, and I was pretty sure the modem was wiped and reinstalled when I reflashed back to stock. I did find another thread of similar issue. Only solution was really to either change to 3G or fix APN.
https://forums.lenovo.com/t5/Moto-Z...ing-Incoming-and-outgoing/td-p/4068998/page/2
One user commented it could be a carrier issue. (see below)
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07-13-2018 08:41 AM
Hello, guys.!
I've been following this inquiry very close and I've arrived into a very accurate conclusion:
1. This is not a device problem! Motorola devices are not the problem. I've found that Samsung and Huawei devices also have the same problems.
2. This is definitely about service provider network. In my investigation, AT&T is the one having this issue alone.
3. This issue happens only in certain Mexican areas. For example, in Monterey this happens. I went to Chihuahua and CD Juarez just last 3 days and I was able to use 4G and calls without problems.
4. Based on the idea that only happens in certain areas at certain networks, I can only concluded that happens to certain devices as well. Brands, perhaps, as unlocked iPhone does not present this issue.
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It could be something to do with Volte 4G calls. It has been disabled for the Xforce 1789-05 european models.
I think waiting to Android 9 may be my best solution though I may start try to start troubleshooting and focusing on simcards to see if 4g will work with other carriers.
I've got an ATT Flipout. I could make call and sms normally. But the network could only rise to E+, cannot be up to 3G (several years ago). The problem was phone hardware. The baseband was only available for US.
Z2F was the flagship, so its modem supported many 4G band for other regions.
As you mentioned, I think you should find out what carrier's band would suit your Z2F. Luckily, all Z2F variants have our bands.
Good luck, guy! And hope you'll give us good news!
You have the (05) dual sim variant correct? You're also in the Philippines right? If you look at this link you'll see all the bands supported for your variant, also you can check carriers in your region to see what bands they are using.
If you look carriers in Philippines like Smart you can see what bands they use.
A comparable carrier is Claro in Brazil.
They use the same bands on a GSM network. I would assume that Retail firmware would open those bands, but I'm not 100% sure and maybe the firmware you flashed doesn't. I do see firmware for RETBR (retail Brazil) and I know that (05) variants are used there. So maybe flashing a retbr firmware will open the bands needed since Brazil and Philippines use some of the same bands. I'm not 100% sure on this, it's just my best guess. You're welcome to verify the info linked and do what you will. I'd think the worst case scenario would be borking your imei and having to blankflash, but those tools are around here as well and so long as you DO NOT relock your bootloader you'll find that it is pretty hard to actually brick this phone. That's the best I can come up with to help.
Thank you
41rw4lk said:
You have the (05) dual sim variant correct? You're also in the Philippines right? If you look at this link you'll see all the bands supported for your variant, also you can check carriers in your region to see what bands they are using.
If you look carriers in Philippines like Smart you can see what bands they use.
A comparable carrier is Claro in Brazil.
They use the same bands on a GSM network. I would assume that Retail firmware would open those bands, but I'm not 100% sure and maybe the firmware you flashed doesn't. I do see firmware for RETBR (retail Brazil) and I know that (05) variants are used there. So maybe flashing a retbr firmware will open the bands needed since Brazil and Philippines use some of the same bands. I'm not 100% sure on this, it's just my best guess. You're welcome to verify the info linked and do what you will. I'd think the worst case scenario would be borking your imei and having to blankflash, but those tools are around here as well and so long as you DO NOT relock your bootloader you'll find that it is pretty hard to actually brick this phone. That's the best I can come up with to help.
Click to expand...
Click to collapse
Your correct, its the dual sim 05 variant. I flashed the retail and I do get LTE data. It just the LTE wont work on 4G. So I dont think its purely a band issue because based on your link I have 3 supported LTE bands with the smart network. Its possible its something to do with carrier communicating with the phone. (APN? Volte?)
Question: will flashing a retbr on a retcn cause issue? Does software channel matter? Maybe I can give it a go, but my wife (who i gave the phone to) has been pretty happy with it. I dont think she wants another wipe on her phone. (i think i already reformatted at least 5 times already)
Update
I found this thread with moto z play.
Maybe this will work? It a method to open all baseband channels.
https://forum.xda-developers.com/moto-z-play/how-to/enabling-basebands-mzp-qualcomm-phone-t3684962
harkoliar said:
I found this thread with moto z play.
Maybe this will work? It a method to open all baseband channels.
https://forum.xda-developers.com/moto-z-play/how-to/enabling-basebands-mzp-qualcomm-phone-t3684962
Click to expand...
Click to collapse
I don't know about all that, looks like a recipe for trouble. Are you able to make or receive voice calls? FYI you can go to apn settings, click the 3-dot menu and reset to default. That should pull your apn info from your sim so you should be good to go apn wise.
There was an old method called RadioComm. It used to unlock carrier for Razr HD (and maybe others Motorola phones). But it is more danger than flashing fw.
On my Verizon phones, no APN profile was showed. But on ATT Z2F, APN was automatically set (and showed) for each carrier.
Inbound and outbound calls affected
41rw4lk said:
I don't know about all that, looks like a recipe for trouble. Are you able to make or receive voice calls? FYI you can go to apn settings, click the 3-dot menu and reset to default. That should pull your apn info from your sim so you should be good to go apn wise.
Click to expand...
Click to collapse
Unfortunately still a no go.
I have reset the network settings and used default apn as per your suggestion. I even copied settings from another phone using same carrier and used different calling apps. It's weird but when at 4g
1. Text work
2. Data works
3. Inbound and outbound phone calls doesn't work
Swap to 3g everything works
I'm still trying to convince my wife if I should flash to retbr.
harkoliar said:
Unfortunately still a no go.
I have reset the network settings and used default apn as per your suggestion. I even copied settings from another phone using same carrier and used different calling apps. It's weird but when at 4g
1. Text work
2. Data works
3. Inbound and outbound phone calls doesn't work
Swap to 3g everything works
I'm still trying to convince my wife if I should flash to retbr.
Click to expand...
Click to collapse
Well if everything works on 3g then it sounds like your bands are fine. Sounds more like a volte issue. 4g works, 3g works, calling works, it's just no calls when 4g is on. Are you using an old sim? Have you tried the sim in another phone to see if you experience the same problems with 4g? Some carriers use different sim for different services. What is your preferred network type set to? If it's exclusively LTE, try setting it to LTE/GSM. It sounds more like a sim issue, setting issue, or maybe a registration issue.
41rw4lk said:
Well if everything works on 3g then it sounds like your bands are fine. Sounds more like a volte issue. 4g works, 3g works, calling works, it's just no calls when 4g is on. Are you using an old sim? Have you tried the sim in another phone to see if you experience the same problems with 4g? Some carriers use different sim for different services. What is your preferred network type set to? If it's exclusively LTE, try setting it to LTE/GSM. It sounds more like a sim issue, setting issue, or maybe a registration issue.
Click to expand...
Click to collapse
I dont think its a old sim issue because its only a year old. But I am getting another simcard from another local network to test it out.
Will update with details.
Hello harkoliar, it looks like both you and I share the exact problem. And best of all, or worst depending on how you view it, I am in Malaysia with the same problems, Grab keeps crashing, among other apps just failing to work period.
Software Channel reads RETCN. 05 phone running an 06 firmware.
I noticed you tried to flash a RETAIL firmware, may I know which was the file you used, was it OPXS27.109-34-21?
I don't have much problems with the connectivity and using 4G. Perhaps it may be a difference between telcos in Malaysian and the Philippines.
Oh... And I bought mine from Lazada, where did you get yours. LOL
frozero said:
Hello harkoliar, it looks like both you and I share the exact problem. And best of all, or worst depending on how you view it, I am in Malaysia with the same problems, Grab keeps crashing, among other apps just failing to work period.
Software Channel reads RETCN. 05 phone running an 06 firmware.
I noticed you tried to flash a RETAIL firmware, may I know which was the file you used, was it OPXS27.109-34-21?
I don't have much problems with the connectivity and using 4G. Perhaps it may be a difference between telcos in Malaysian and the Philippines.
Oh... And I bought mine from Lazada, where did you get yours. LOL
Click to expand...
Click to collapse
Same Lazada. Lol. We must have gotten from the same supplier.
Your right, I installed OPXS27.109-34-21. Worked like a charm after that. Please follow the steps provided in the guide - Step E.
https://forum.xda-developers.com/z2-force/how-to/guides-bootloader-twrp-custom-roms-root-t3805737
note: be mindful just what version of android your using. Im assuming its also android 8 like mine. If its currently Android 7, i heard its best to install the android 7 rom first then upgrade to 8. You can tell by the versions.
Another user also having the same problems and reinstalled the latest Retail ROM for XT1789-05 - latest version, worked for him as well
https://forum.xda-developers.com/z2-force/help/internet-issue-apps-xt1789-05-t3924795/page2
Please let us know how you go.
harkoliar said:
Same Lazada. Lol. We must have gotten from the same supplier.
Your right, I installed OPXS27.109-34-21. Worked like a charm after that. Please follow the steps provided in the guide - Step E.
https://forum.xda-developers.com/z2-force/how-to/guides-bootloader-twrp-custom-roms-root-t3805737
note: be mindful just what version of android your using. Im assuming its also android 8 like mine. If its currently Android 7, i heard its best to install the android 7 rom first then upgrade to 8. You can tell by the versions.
Another user also having the same problems and reinstalled the latest Retail ROM for XT1789-05 - latest version, worked for him as well
https://forum.xda-developers.com/z2-force/help/internet-issue-apps-xt1789-05-t3924795/page2
Please let us know how you go.
Click to expand...
Click to collapse
Just finished flashing! So far so good, installing apps as we speak! Super excited!
Was your seller named Aukey? I left them a stinker of a review, lol.
Thank you so much for your experience and detailed breakdown of what you did to get right with your, now, wife's phone. :laugh::fingers-crossed::victory:
Different seller but same source most likely
Different seller but same source most likely.
Happy to help and hopefully that did fix all your app problems. :good:
Still credits and thanks to the actual guys who did the guide.
frozero said:
Just finished flashing! So far so good, installing apps as we speak! Super excited!
Was your seller named Aukey? I left them a stinker of a review, lol.
Thank you so much for your experience and detailed breakdown of what you did to get right with your, now, wife's phone. :laugh::fingers-crossed::victory:
Click to expand...
Click to collapse
AUKEY owns coolicool. Same supplier keeps making the same mistake