Hi all,
Been lurking around forums for awhile and have also been helped and taught greatly by the discussions. Just became a member recently and this is my first post.
So I was flashing a couple of roms from CM 10.1 to stock android mod but noticed I couldn't get to the hidden menu *#2263# screen that I had with my default AT&T Samsung touchwiz that let me choose which LTE band to latch on to. I'm assuming this is because this is because all the roms are AOSP-based.
I was wondering if there was a hidden menu option for AOSP-based roms that had the same functionality as *#2263# (only available in touchwiz/Samsung base where you can choose specific LTE bands) instead of just the *#*#4636#*#* (where you can only choose which network but not the exact band) or if there are any apps out there that have this option of choosing a specific LTE frequency band.
I'm in this weird situation where we're testing only the LTE network of our provider and want to block off other fallbacks, etc..
Thanks for any feedback and suggestions.
bump
bump for help
Partially. ..
With CM based variant AOSP builds. ...you can go into your settings. ..then search networks. ..
Once the network is found...select it...
Then back arrow takes you to the 2g only selection option. .
Then select it...
ATT has a RAT restricted network. ..and has disabled the ability to select individual bands as we could with previous generation smart phones. .
This edge only work around gets better signal in poor signal areas. ..but will not persist through a reboot. ..
You are limited to this hack unless you switch networks entirely. ..g
Sent from my SAMSUNG-SGH-I317 using XDA Premium HD app
gregsarg said:
Partially. ..
With CM based variant AOSP builds. ...you can go into your settings. ..then search networks. ..
Once the network is found...select it...
Then back arrow takes you to the 2g only selection option. .
Then select it...
ATT has a RAT restricted network. ..and has disabled the ability to select individual bands as we could with previous generation smart phones. .
This edge only work around gets better signal in poor signal areas. ..but will not persist through a reboot. ..
You are limited to this hack unless you switch networks entirely. ..g
Sent from my SAMSUNG-SGH-I317 using XDA Premium HD app
Click to expand...
Click to collapse
Thanks for replying.
I'm not sure what you mean by ATT disabling the ability to select individual bands as, with a stock Samsung AT&T rom, I am able to do *#2263# and get to a RF band selection menu. However, with stock Google edition or other AOSP roms, this *#2263# hidden menu is nowhere to be found.
my understanding is that typically only Samsung's own Field Engineering app will expose and even force the Band in use, often, typically "band IV" or Band II when I have a 3G/HSPA connection (=AWS or PCS band). Is there a way using a rooted phone loaded with a flavor of CM to see that as well? (Either just display the band or even lock on a band. I'm asking if there in an alternative engineering app that would work... if you run CM.
Or is the only solution to return to a stock Samsung/T-mobile Android version if you want expose "Band in use"?
korny249 said:
my understanding is that typically only Samsung's own Field Engineering app will expose and even force the Band in use, often, typically "band IV" or Band II when I have a 3G/HSPA connection (=AWS or PCS band). Is there a way using a rooted phone loaded with a flavor of CM to see that as well? (Either just display the band or even lock on a band. I'm asking if there in an alternative engineering app that would work... if you run CM.
Or is the only solution to return to a stock Samsung/T-mobile Android version if you want expose "Band in use"?
Click to expand...
Click to collapse
Not sure if this is what you are after, but go into Settings and under Wireless & Networks choose More...then choose Mobile Networks, in there you can choose Network modes and also force to use only 2G networks.
Thanks for the reply. It's not what I meant though, I want to see which band I'm getting service on. For example AWS or PCS band. my Samsung with stock android on the above examples it would say band 4 or band 2.
But I suspect you need stock android from the OEM to keep that ability.
Sent from my Nexus 4 using Tapatalk 2
IAnyone happen to know the default *#2263# Service Menu settings on the i317, and/or how to restore them to default???
I'm experiencing some network issues...drops...no signal...etc - and so in reviewing other threads I adjusted a few, which didn't make it better.
I set gsm, lte and wcdma were set to "all" or "automatic" in the Service Menu...but signals are still not good.
If I set to default, I will leave them alone
Does any changes you make to that menu stay saved on the device? I'm thinking at&t locked down that menu back with the radio/modem released with 4.1 roms.
Try *#*#4634#*#* then Device Information. You can select the band you want and it seems to work.
I'll give it a shot. Thanks.
I'm glad. Be careful in those menus -- you can do some unintended damage.
Hello.
AT&T has disabled all the international GSM\LTE bands on Z999, making it unusable outside of USA (at least in countries with GSM 900\1800, UMTS 2100 & LTE B3 & B20, like the one I live in). In order to change that, we need to turn on the Qualcomm USB Diag port, and for this, the phone has to be rooted.
I've been trying to root my AT&T Z999 for some time now, without any success, unfortunately. However, searching forums after forums, sites after sites, I've discovered the surprisingly easy method of turning on the Diag port without root.
It appears, that Axon M shares a lot with Axon 7, at least the secret key combination to enter Factory Test Mode:
Turn off the phone
Press and hold Power + Vol DOWN buttons until you see the screen "FTM" (see attached screenshot)
You have to press both buttons for the long time, do not release them when the phone starts - just wait until you see the screen. And that's it - you are now in Factory Test Mode and PC sees your phone as "ZTE Handset Diagnostic Interface (COMxx)"
Now, in order to change the bands, you have to follow these guides one after one:
Backup IMEI and NVRAM (ignore all the steps to turn Diag port on, you've done that already)
Unlock LTE bands
Mod edit: Link removed! (this guide in in Russian, but all screenshots are in English & every step is pretty clear)
You would need this tool also.
Please remember, these things are complex, and require considerable experience with Android & Windows. DO NOT START unless you feel confident that you know, what you're doing. I'm serious. Do not try this, if you're not experienced.
WBR,
Draco.
Why mods deleted the link? Google translate exists.
Edit:
I've managed to get the data from the phone using QXDM.
lte_bc_config contained the value of "2251800618993690" now I'm parsing the info how to edit this. Seems like the tutorials don't really match this device. Now I wonder if the chipset can handle invalid data and just input all 1's. Unsupported frequencies just won't work.
Edit2: Writing all 1's didn't work.
Edit3: I wrote this value: "2251802901219551" Calculated with CDMATool. But it seems like the AT&T firmware only finds edge network. I've double checked the bands to be correct ones. So now I will switch to the chinese firmware.
Edit4: Final edit. Turns out you cannot flash chinese firmware on AT&T device. Sigh so my unit is stuck to EDGE/wifi only.
Drakosha said:
Hello.
AT&T has disabled all the international GSM\LTE bands on Z999, making it unusable outside of USA (at least in countries with GSM 900\1800, UMTS 2100 & LTE B3 & B20, like the one I live in). In order to change that, we need to turn on the Qualcomm USB Diag port, and for this, the phone has to be rooted.
I've been trying to root my AT&T Z999 for some time now, without any success, unfortunately. However, searching forums after forums, sites after sites, I've discovered the surprisingly easy method of turning on the Diag port without root.
It appears, that Axon M shares a lot with Axon 7, at least the secret key combination to enter Factory Test Mode:
Turn off the phone
Press and hold Power + Vol DOWN buttons until you see the screen "FTM" (see attached screenshot)
You have to press both buttons for the long time, do not release them when the phone starts - just wait until you see the screen. And that's it - you are now in Factory Test Mode and PC sees your phone as "ZTE Handset Diagnostic Interface (COMxx)"
Now, in order to change the bands, you have to follow these guides one after one:
Backup IMEI and NVRAM (ignore all the steps to turn Diag port on, you've done that already)
Unlock LTE bands
Mod edit: Link removed! (this guide in in Russian, but all screenshots are in English & every step is pretty clear)
You would need this tool also.
Please remember, these things are complex, and require considerable experience with Android & Windows. DO NOT START unless you feel confident that you know, what you're doing. I'm serious. Do not try this, if you're not experienced.
WBR,
Draco.
Click to expand...
Click to collapse
Does this really work? Anyone else tried?
Sent from my SM-N950F using Tapatalk
can you repost the 3rd link?
I can't "repost" the 3rd link, but I can suggest you to open the well-known (and the best) Russian web-site with the name starting with "4" (and having something like "...pda" also), and then add this to the address: /forum/index.php?showtopic=546814&st=4640#entry35702698
Well that russian site has pretty good instructions on how to do it. I tried with one program and it didn't work on AT&T ZTE. I'll try with that qualcomm app again this weekend but if I remember right the last time it had trouble writing because it had no correct service mode code \o/
Drakosha said:
I can't "repost" the 3rd link, but I can suggest you to open the well-known (and the best) Russian web-site with the name starting with "4" (and having something like "...pda" also), and then add this to the address: /forum/index.php?showtopic=546814&st=4640#entry35702698
Click to expand...
Click to collapse
that website's address ends with ".RU", doesnt it?
i accessed that website as your given link, but i cannot see any related threads about ZTE on that, seems all they disscussed about is Lenovo K910SS. was something wrong with my searching?
gaosilver1000 said:
that website's address ends with ".RU", doesnt it?
i accessed that website as your given link, but i cannot see any related threads about ZTE on that, seems all they disscussed about is Lenovo K910SS. was something wrong with my searching?
Click to expand...
Click to collapse
Every Quallcomm device has almost the same NVram configuration rules, the difference is usually on how to enable diagnostic port, but for Z999 I have figured that out already. So, for the configuration process, every Quallcomm guide should work.
I've successfully enabled Z999 to work with 2G & Edge in my country using these guides. 3G & LTE don't work yet, but I'm sure they will eventually. I don't believe Z999 lacks the hardware ability to use LTE B3 & B20 (and other bands), it has to be something wrong with NVram parameters.
For me 2G and Edge worked out of the box in Finland. Tried to enable more but only thing that changed was power usage. Not worth it
Drakosha said:
Every Quallcomm device has almost the same NVram configuration rules, the difference is usually on how to enable diagnostic port, but for Z999 I have figured that out already. So, for the configuration process, every Quallcomm guide should work.
I've successfully enabled Z999 to work with 2G & Edge in my country using these guides. 3G & LTE don't work yet, but I'm sure they will eventually. I don't believe Z999 lacks the hardware ability to use LTE B3 & B20 (and other bands), it has to be something wrong with NVram parameters.
Click to expand...
Click to collapse
It means success unlock 2G/EDGE, not yet with 3G and LTE? When buy the device, it can use other carrer to call and 2G.
When you finger out the way to unlock LTE, please share me.
by the way, do you have the way to enter fastboot mode? I tried the "volunm + &power button" but it just do a normal restart into android.
Fair warning to everyone trying this, make sure you actually do a backup of your IMEI. I didn't and after screwing something up my SIM is no longer detected, and my IMEI is no longer available.
Hello folks!
I have an AT&T phone. I cannot connect to ANY (even EDGE) network!
I modified the configuration several times:
---
I have EDGE with this config:
00441: 0 and 0xFFFF
00946: 0 and 0x06A8
01877: 1677472
02954: 0
06828: 524356
06829: 524356
I got no LTE
---
test2:
06828: 524485
06829: 524485
I got no LTE
----
00441: 0xffff (but 0x380 is recommended)
00946: 0xff8
02954: 0 and 805765120
01877: 3460734838925427584
06828: 1904863
06829: 1904863
I got no LTE, just continous dropping network, useless config.
----
00441: 896
00946: 0 and 0x140
02954: 0 and 131072
01877: 562949974393728
Only edge network, error while searching for networks.
----
06828: 524485
06829: 524485
I have EDGE with this config, but no LTE.
----
Anyone has a good and working LTE mode?!
edit: "The bands on the AT&T z999 are: 2, 4, 5, 12, 29, 30, and 66. "
So, there won't be any Band 1,3,20 for us?!
Thanks!
No one has gotten LTE work on AT&T model. I wouldn't try this.
hene193 said:
No one has gotten LTE work on AT&T model. I wouldn't try this.
Click to expand...
Click to collapse
I had nothing, now I have EDGE, so I am glad to did that modifications...
Drakosha said:
Every Quallcomm device has almost the same NVram configuration rules, the difference is usually on how to enable diagnostic port, but for Z999 I have figured that out already. So, for the configuration process, every Quallcomm guide should work.
I've successfully enabled Z999 to work with 2G & Edge in my country using these guides. 3G & LTE don't work yet, but I'm sure they will eventually. I don't believe Z999 lacks the hardware ability to use LTE B3 & B20 (and other bands), it has to be something wrong with NVram parameters.
Click to expand...
Click to collapse
Have you been able to make 3G & LTE work? I just got my ZTE AXON M from ebay and since I can't use data or make calls/unlock the phone I was thinking of trying this.
Drakosha said:
Every Quallcomm device has almost the same NVram configuration rules, the difference is usually on how to enable diagnostic port, but for Z999 I have figured that out already. So, for the configuration process, every Quallcomm guide should work.
I've successfully enabled Z999 to work with 2G & Edge in my country using these guides. 3G & LTE don't work yet, but I'm sure they will eventually. I don't believe Z999 lacks the hardware ability to use LTE B3 & B20 (and other bands), it has to be something wrong with NVram parameters.
Click to expand...
Click to collapse
Can I describe in detail how to enable 2G?
Thanks !
Hello guys. I've tried all configs mentioned by @ugynok and some of my own - the result is still the same, no 2G network and all options in mobile connections are disabled not clickable. Can you please advice which config worked for you to enable 2G network?
Any luck?
Hi all. Was anyone able to get a useful set of bands working in the UK for this phone?
Many thanks.
V
Drakosha said:
I can't "repost" the 3rd link, but I can suggest you to open the well-known (and the best) Russian web-site with the name starting with "4" (and having something like "...pda" also), and then add this to the address: /forum/index.php?showtopic=546814&st=4640#entry35702698
Click to expand...
Click to collapse
It's the mistake. I don't know how to delete it, sorry.