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I flashed the Lollipop version of Liquid Smooth on my AT&T G3 and at first everything was working fine, 4G included. After a couple of days 4G disappeared. When this happened it didn't just go to 3G, it lost all data service completely. I originally figured it was the ROM and flashed back to the previous ROM I had using the TWRP backup I made beforehand. Same story, no data service. Figured maybe it was the modem so I flashed a working G3 modem on here, same story. I flashed to a different Lollipop ROM, Resurrection, to see if that fixed anything, nope. This is the ROM I currently have installed. At this point I went and look at the mobile network options and immediately noticed 1 issue, the preferred service was 3G and not LTE. I had an option to change it to LTE but when I actually select LTE it doesn't actually switch, it just stays on 3G.
The one good thing I managed to do was switch the APN to one that worked with 3G. The APN that was originally set was "pta", I can provide the actual APN information if that'll be useful but I figure most ROMs are going to have similarly named APNs. 3G works on at least 2 of the APNs listed for this ROM, "broadband" and "wap.cingular".
I called AT&T and determined that I my 4G service wasn't cut off; not that I really thought it was anyway as that wouldn't explain why I can't even select 4G as a network type. I'm kind of at a loss as to how I just randomly lost 4G access without actually making any changes to the firmware or OS of the phone. I'm also at a loss of how I can get it back.
And I am just sitting here with 3G with speed of 2 Mbps...
No one has any ideas or advice?
Hi all, I hope I can get help here since I'm getting crazy trying to have my p8000 with Rogers connectivity.
I've tryed on both Stock and Eragon roms with same results.
The phone seems to only be able to find 1 network - ROGERS 4G. It registers it, but then I can only get the messaging to work... both calls and internet are still down.
Also important to say that the reason why I can't see the LTE might be related to my old sim card. I'll be replacing it soon.
Anyways, in the mean time I could use some help with:
- assuming I can only connect to the 4g, should I be able to have calls at all? are calls delivered through 4g? 3g? 2g? all?
- Any reason why I can only see 4g? is the phone not capable of connecting to 2g/3g?
- anything else I could try? different modem drivers, some app to assist on this?
Thanks
update
I partially solved the issue...
few notes.... since I leave in canada, the 3g frequencies do not work...
So, I can only have internet with 2g or 4g....
no this brings one other issue regarding receiving phone calls while phone is in 4g... it does not know the calls are coming since they are transmitted using 2g... any way phone monitors 2g incoming calls while using 4g internet?
Hi
Any progress on this. I have the same issue (p8000 and rogers) Have you found a solution?
I'm on Rogers with the P8000. When it is showing 4G, I'm surfing away fine. Making a call, it switches to 2G because like most carriers (other than Wind/Mobilicity), voice calls are on the 2G network. I dont believe the P8000 has 3G bands that we use in N.America so you are only going to get 4G or 2G.
According to willmyphonework.net, the P8000 is able to use all of the frequencies. Therefore, you should have 2g, 3g and LTE.
Is this not the case?
I've been working on a fix since a long time now. If you are in SD community then you prolly know me. Anyway I was able to fix this on two of my phones and it's working fine. I tested for 12 hours now. I'll also tell you in the end what problems I'm seeing. I'm also working on a fix for that.
I noticed that a service is started when the fallback happens but if I kill that service the network also dies. But if you follow the below method it safely starts a new service which kills the one that's responsible for killing the 4G/LTE
1. Upgrade your phone to 13B firmware
2. Root 13B
3. Now download Shortcut Master lite app from play store.
4. Now add these shortcuts to your favorites in the "Shortcut Master lite app". You can search for "LTE" and click on search button
LTEBandSelection
LTETestMain
LTE System Selection
CDMAPreference
5. Now click on "LTEBandSelection" and enable all the bands
6. Save and reboot
7. You now need to enable your data and turn off your wifi. Make sure your phone is in Global mode (in settings >> Mobile networks >> System select)
8. After your phone is rebooted open "Shortcut Master lite" app.
9. Now tap on LTETestMain
10. Select Click on CDMA preference.
Now choose Band preference and select "any"
P_REV_Preference ---> "MOB_P_REV 3
This is important.. EVDO Revision --> Rev A
11. "LTE Connect w/o IMS PDN" must be checked
12. Now go back to your main menu in shortcut master lit app
13. This step is very important. Changing the timeout is important. Tap on LTE System Selection
Except "Scan duration" add a couple zeros to all the other timers. For eg: T_mpsr timer (Min) is 200
The fallback timer will reset itself after reboot. But don't worry the configuration is already updated with the new value. For some reasons the shortcut master lite app is not picking it up.
14. Now finally click on "CDMA preference" in the main menu and make sure it has the value you set in Step 10
At step 10 or 13 your network should go away and your phone should complain about "no network". That's fine. just ignore the message.
Now finally reboot your phone. That's it. You should now have 4G LTE and it won't fallback to 3G or H+
The only problem is when I'm on a call my 4G LTE is dropped to 3G/H+. But after I hang up it goes back to 4G LTE after 12 seconds. I don't know if it's an expected behavior. But I'm trying to see if there is a fix for that.
I tested this with Tmobile. Make sure your APN settings are correct.
Not working for me on Cricket (AT&T). Still will always go back to H+, 4G LTE only works when I select CDMA.
konradsa said:
Not working for me on Cricket (AT&T). Still will always go back to H+, 4G LTE only works when I select CDMA.
Click to expand...
Click to collapse
I tried it on my two phones (Both tmobile). My friend just tried it on his phone. It worked for him too.
motorhead_biker said:
I tried it on my two phones (Both tmobile). My friend just tried it on his phone. It worked for him too.
Click to expand...
Click to collapse
That's great! I hope we can figure out also what we need to do to get it to work for AT&T, I am sure it's probably just some small tweaks required.
konradsa said:
That's great! I hope we can figure out also what we need to do to get it to work for AT&T, I am sure it's probably just some small tweaks required.
Click to expand...
Click to collapse
I will try it with my roomies att sim tonight. He has a nano sim, I need to find a sim adapter.
Awesome, thank you! worked for me T-mobile.
it initially didn't work but I had to turn data off then on.
It also cycles me to 2g speed for a few seconds sometimes but that may be due to poor signal in building.
pwtzz said:
Awesome, thank you! worked for me T-mobile.
it initially didn't work but I had to turn data off then on.
It also cycles me to 2g speed for a few seconds sometimes but that may be due to poor signal in building.
Click to expand...
Click to collapse
Yeah It's due to the poor signal. I got that too. You can check your signal strength using LTE discover app.
But overall it's working fine for Tmobile. I'm gonna try and fix ATT tonight.
Is 13B the main thing in the solution? I've changed these settings before on 11A and wasn't fixed. I tried these numbers on 11A and still don't work.
Also, unless a phone supports VOLTE, it'll fall back to 3G/H for calls.
eigen said:
Is 13B the main thing in the solution? I've changed these settings before on 11A and wasn't fixed. I tried these numbers on 11A and still don't work.
Also, unless a phone supports VOLTE, it'll fall back to 3G/H for calls.
Click to expand...
Click to collapse
I tried in 11A and it didn't work for me. So I guess it needs 13B.
So I tried various combinations last night for AT&T/Cricket, but I was not able to get it to work. No matter what I tried, when I had 4G LTE, voice wouldn't work and whenever voice worked, I was back to H+.
If others are reporting that T-Mobile works reliably on 4G and nobody can figure out how to make this work for AT&T, I guess it's time to switch to T-Mobile.
konradsa said:
So I tried various combinations last night for AT&T/Cricket, but I was not able to get it to work. No matter what I tried, when I had 4G LTE, voice wouldn't work and whenever voice worked, I was back to H+.
If others are reporting that T-Mobile works reliably on 4G and nobody can figure out how to make this work for AT&T, I guess it's time to switch to T-Mobile.
Click to expand...
Click to collapse
No. Hold on. I have a solution for ATT too. I tried something last night. Actually while I was working on a solution for ATT I found that we don't even have to go through the steps I mentioned in my OP to solve the problem. It boils down to invoking a service and killing a native VZW service.
The ATT solution I have works but in low signal area 4G fades and it doesn't fallback to 3G or H+. I had to recycle data to get 3G or H+.
It's Working!!!!!!!!! Thank you!!!!!!!
You just made my life much better now!
I finally have a phone which is great and also finally have good reception!
I Love U!
motorhead_biker said:
No. Hold on. I have a solution for ATT too. I tried something last night. Actually while I was working on a solution for ATT I found that we don't even have to go through the steps I mentioned in my OP to solve the problem. It boils down to invoking a service and killing a native VZW service.
The ATT solution I have works but in low signal area 4G fades and it doesn't fallback to 3G or H+. I had to recycle data to get 3G or H+.
Click to expand...
Click to collapse
Yes, that same thing happens when you switch to CDMA mode with AT&T. Voice doesn't work then (obviously), but it also doesn't fall back to H+ automatically, when you lose 4G coverage you pretty much lose signal all together.
konradsa said:
Yes, that same thing happens when you switch to CDMA mode with AT&T. Voice doesn't work then (obviously), but it also doesn't fall back to H+ automatically, when you lose 4G coverage you pretty much lose signal all together.
Click to expand...
Click to collapse
Yeah I know. I also know why that is happening. Actually I think it's a bug in the baseband firmware. But we can fix that issue by just overriding the command that was sent by baseband firmware.
ron.r said:
It's Working!!!!!!!!! Thank you!!!!!!!
You just made my life much better now!
I finally have a phone which is great and also finally have good reception!
I Love U!
Click to expand...
Click to collapse
Lol.. rep me in SD :laugh:
konradsa said:
Yes, that same thing happens when you switch to CDMA mode with AT&T. Voice doesn't work then (obviously), but it also doesn't fall back to H+ automatically, when you lose 4G coverage you pretty much lose signal all together.
Click to expand...
Click to collapse
Do you have a working fix for AT&T/Cricket? Is it different than the T-Mobile?
motorhead_biker said:
Lol.. rep me in SD :laugh:
Click to expand...
Click to collapse
Ha! You are repped!
What root did you use? and steps?
easyroot?
did you split the file and merge it back?
I must have really bad luck or something. It doesn't work for me. The Tbsr_cdma timer resets back to 2 at reboot.
Edit: Appears to be working. Nice job!
renoob said:
Ha! You are repped!
What root did you use? and steps?
easyroot?
did you split the file and merge it back?
Click to expand...
Click to collapse
Root? I just flashed the rooted sys image. That's it. instead of copying it in the FAT32 memory card just copy it to your phone's internal and you don't have to deal with split and merge stuff
If it drops out of 4G on a call then you're talking on 1X. So no video chat, no HD voice and no voice + data?
So, i'm in the UK with my nice shiny OP3 (on Three UK) - I am rooted with twrp, but same applies on stock.
The radio in this phone seems to prefer H+/3G to 4G, even though where i live, i have full bars on both. My nexus 5 always prefered 4G, and the OP3 is set to prefer 4G but 90% of the time drops to 3G/H+
Another interesting thing, if i use the testing menu to force LTE only, even if it's on 4G already, completely stops any signal getting through for a number of minutes until it decides to connect sometime later. I have full LTE signal in my room too.
Is this a radio problem that could be solved in the future with a software update? not seen anyone else with this issue!
FYI, when it is on 4G, it's super fast and stays connected until a reboot, where the whole process starts again
Norman
manor7777 said:
So, i'm in the UK with my nice shiny OP3 (on Three UK) - I am rooted with twrp, but same applies on stock.
The radio in this phone seems to prefer H+/3G to 4G, even though where i live, i have full bars on both. My nexus 5 always prefered 4G, and the OP3 is set to prefer 4G but 90% of the time drops to 3G/H+
Another interesting thing, if i use the testing menu to force LTE only, even if it's on 4G already, completely stops any signal getting through for a number of minutes until it decides to connect sometime later. I have full LTE signal in my room too.
Is this a radio problem that could be solved in the future with a software update? not seen anyone else with this issue!
FYI, when it is on 4G, it's super fast and stays connected until a reboot, where the whole process starts again
Norman
Click to expand...
Click to collapse
Check your APN.
papi92 said:
Check your APN.
Click to expand...
Click to collapse
APN Is exactly the same as my nexus 5, and i even added a new one. Same deal.
I'm an IT Professional, just not a developer. i've done everything i can think of. 4G does work, but only when it wants to. My phone is also registered with my carrier correctly.
Bump on this anyone?
I am having a similar problem I guess. I have the dual sims installed and one sim randomly shows no range. Further, the network preference is not the way it is supposed to be - Chose it as 4G and if 4G is not detected it falls back to 2G.
Same issue forcing lte fixes lte for me but then no calls come through
Sent from my OnePlus 3
dkotoric said:
Same issue forcing lte fixes lte for me but then no calls come through
Sent from my OnePlus 3
Click to expand...
Click to collapse
Same as you. Anyone know how to fix the network priority to lock onto LTE first and then drop to 3G for calls?
Sent from my unknown using XDA-Developers mobile app
cdkg said:
Same as you. Anyone know how to fix the network priority to lock onto LTE first and then drop to 3G for calls?
Click to expand...
Click to collapse
I did notice when I do have LTE it's fine but it won't re lock onto LTE after a call on Three where it has to drop to H
I'm having a problem where the phone catches 4G+ "carrier aggregation" and it'll jump from to 4g+ to 4g and back to 4g+ really fast like almost flashing . And speed test are showing low numbers. T-Mobile USA.
Sent from my ONEPLUS A3000 using XDA-Developers mobile app
Same here. Sometimes it just locked to 3g/h+ in a strong LTE area for no reason. I'm on stock oos with one sim and 1 apn. Sometimes I need to reboot the phone to get LTE back.
Sent from my Pixel C using XDA-Developers mobile app
I first put my sim into slot 1 when I first got the device, I was having the exact same issue. I found that the data priority sim, or if you only have one sim needs to be in sim slot 2.
mrnovanova said:
Same here. Sometimes it just locked to 3g/h+ in a strong LTE area for no reason. I'm on stock oos with one sim and 1 apn. Sometimes I need to reboot the phone to get LTE back.
Click to expand...
Click to collapse
Yes exactly. And even then it doesn't show up straight away despite 3/4 and usually full signal. Sometimes just putting it into standby mode and leaving it 20mins can sort it... Until I get another call lol. Wondering if it's just a software or firmware issue that could be patched. Lte is fine it's just never preferred despite the options being set
papi92 said:
Check your APN.
Click to expand...
Click to collapse
APN is not the universal response. Here he faces a problem of inaccurate network type choice, APN is only to have acces to internet through the provider's proxies. It's a radio problem clearly, the baseband is probably to be corrected by OnePlus.
It's really a strange thing to see those network type issues, MMS issues are still present after all those years.
Striatum_bdr said:
APN is not the universal response. Here he faces a problem of inaccurate network type choice, APN is only to have acces to internet through the provider's proxies. It's a radio problem clearly, the baseband is probably to be corrected by OnePlus.
It's really a strange thing to see those network type issues, MMS issues are still present after all those years.
Click to expand...
Click to collapse
This is what I thought. It's probably an easy fix for oneplus or rom developers. Custom radios are nothing new. Let's hope so anyway!
This is happening to me as well. I'm on three in a strong 4G area but it always prefers 3G it's so annoying hope it gets fixed soon.
Sent from my ONEPLUS A3003 using Tapatalk
same problem here.
i tested op3 with 3 different carriers
on two of them - lte no problem, instant connect...
on third sim - slow connection, frequent out of range. almost no lte.
tested third sim on iphone - instant lte connect, no problem.
seems like a incompatibility with an selected cellular operators.
DrSun said:
same problem here.
i tested op3 with 3 different carriers
on two of them - lte no problem, instant connect...
on third sim - slow connection, frequent out of range. almost no lte.
tested third sim on iphone - instant lte connect, no problem.
seems like a incompatibility with an selected cellular operators.
Click to expand...
Click to collapse
Could be but I'm doubting it. OP3 Has full support at least for my carrier on both bands they use (3 & 20).. Never know, the devs here will figure it out if oneplus don't
So i am in Germany right now using Vodafone with LTE enabled and enough datavolume but i am surfing with 2g speed. What is this? Checked the apn and everything is fine. On my S5 i am flying through the net ...
---------- Post added at 03:00 PM ---------- Previous post was at 02:58 PM ----------
erdock said:
So i am in Germany right now using Vodafone with LTE enabled and enough datavolume but i am surfing with 2g speed. What is this? Checked the apn and everything is fine. On my S5 i am flying through the net ...
Click to expand...
Click to collapse
Even loading google is a struggle
Same issue here, have never got it to say 'LTE' for me since I got the phone, best it does is 4G whilst my Galaxy S5 would happily pickup LTE. Just wondering what UK users have there preferred network type set to? Mine is on GSM/WCDMA/LTE I assume that is right as that is what it went to itself and have tried LTE or LTE/WCDMA too.
RetroFlux said:
Same issue here, have never got it to say 'LTE' for me since I got the phone, best it does is 4G whilst my Galaxy S5 would happily pickup LTE. Just wondering what UK users have there preferred network type set to? Mine is on GSM/WCDMA/LTE I assume that is right as that is what it went to itself and have tried LTE or LTE/WCDMA too.
Click to expand...
Click to collapse
Sorry, i mean my OP3 shows LTE in statusbar but it runs with 2G speed
I have been running CM13 ever since I got my OP3 this summer, but today i decided to go back to oxygenos for a bit. Following a clean flash, I could text and use wifi but had no data capabilities. So I went and copied APN info from brothers phone, and I can get lte but after a few hrs and going back and forth from wifi and data, it starts to connect to H+. I have checked mobile data settings and confirmed lte preference.
Any ideas?
EDIT: I downloaded a lte network app that corrected the connection, switching from H+ to lte, but after going on wifi then back off I was back to H+...
hipporun said:
I have been running CM13 ever since I got my OP3 this summer, but today i decided to go back to oxygenos for a bit. Following a clean flash, I could text and use wifi but had no data capabilities. So I went and copied APN info from brothers phone, and I can get lte but after a few hrs and going back and forth from wifi and data, it starts to connect to H+. I have checked mobile data settings and confirmed lte preference.
Any ideas?
EDIT: I downloaded a lte network app that corrected the connection, switching from H+ to lte, but after going on wifi then back off I was back to H+...
Click to expand...
Click to collapse
Are you on T-Mobile? I have the same problem
Sent from my SM-G935T using Tapatalk