Jio VoLTE problem fix - Xiaomi Redmi 2 Guides, News, & Discussion

Guys If anyone facing Random reboot or no signal while making VoLTE call, here is the fix for you, it's working both stock and custom ROM
Step 1. Root your device
Step 2. Goto play store and download NETWORK SIGNAL GURU
Step 3. Open the application and click "band lock"
Then choose LTE then select only the "BD40: TDD 2300 and then click OK
Step 4. Stop testing
Step 5. Exit
100% working in my redmi 2 stock and custom ROM hop it will helps you
Sorry for bad English

Related

Select Radio Band Unsuccessful

I have several questions about my LG P990, when I go to 'Testing' mode (dial *#*#4636#*#*), when I select Phone information my phone signal/network suddenly blank for 5-6 seconds, it always happens. And when I go to Select radio band, it always give me unsuccessful message on whatever band I choose.
I recall these problems never happens on my previous Samsung android phones, does anyone have the same problems? Thanks for the reply.
The loss of radio signal is normal, as it seems that the phone tries to re-estabilish its connection with the network every time you enter that menu. As for the radio band, that hardly can be considered normal; did you flash a different baseband or are we speaking about a fully stock phone?
Hi,
I've always had this error when trying to Select radio band on my O2X... I've never tried when it was still stock (which lasted 1 day ), but I've been on BB405, 622 and 725 and could never select radio ba,d without error.
cannot select any radio band
when i try to choose any radio band from tablet information menu via *#*#4636#*#* ....for example if i choose AUTOMATIC..it says UNSUCCESSFUL every time
And i am not roooted..i am on stock
PLZZZZZ HELP
THANKXXXXXXXXXXXXXX A LOTT IN ADVANCE
Same problem.
chinu456789 said:
when i try to choose any radio band from tablet information menu via *#*#4636#*#* ....for example if i choose AUTOMATIC..it says UNSUCCESSFUL every time
And i am not roooted..i am on stock
PLZZZZZ HELP
THANKXXXXXXXXXXXXXX A LOTT IN ADVANCE
Click to expand...
Click to collapse
Hi, I just installed CM12.1 on my note 2 N7100 but cellular network is off. and I can't change to any radio band.
just error Unsuccessfull.
jemsi said:
Hi, I just installed CM12.1 on my note 2 N7100 but cellular network is off. and I can't change to any radio band.
just error Unsuccessfull.
Click to expand...
Click to collapse
1. wrong forum (this is for LG Optimus 2x users)
2. LG Optimus 2x doesn't have CM12.1 yet

Guide to S-OFF, Unlock and Root, GSM Unlock w/ Fix

hi after hours of trying to make my phone work with GSM Sim (T-Mobile), i successfully managed to make it work and here are all the steps I did so other people who can't make it hopefully will see this guide atleast somewhat helpful
here is what i did:
1) first of all, i s-off my HTC One (H-boot 1.55, 3.05.651.6)
-here is the guide i followed
-the same guide but in video
2) flashed the Sprint_HTC_One_m7wls_1.29.651.10_RUU.zip (to downgrade to 4.1.2)
-it is the solution 3), a) here
3) Unlock and root the phone
-a very good guide
note: to make the developer option appear under settings you NEED to go to Settings > About > Software Information > More > and TAP the build number about 7 TIMES, after that the Developer options would appear on settings.
4)The sim unlock guide here
5)Then the GSM Fix connection drop here
-I followed the guide made by xerxes1987 because it is free
exact steps i did:
a) put the phone in CDMA preferred (see step 4 for ref)
b) Dial ##3424# and make sure you tap on and tap the SELECT (VERY IMPORTANT!!!)
c) go to device manager and manually install the driver for HTC DIAG 9k ONLY(you dont want to mess with the one without the 9k) can be found here note: DO NOT download the 9K (COM105) as it is an adware program
d) download, extract and run CdmaDevTermV.2 then scan for ports > select HTC Diag 9k > connect. Under SPC/Lock on the drop down arrow select HTC and scan (you need to copy that number generated). after that select disconnect and close program
e) download and install QPST. run the QPST config. Under ports make sure you select and enable the HTC diag. then under Start Clients select service programming and select your phone and press OK. scroll to the right till you find 1x/HDR Security. Under R-UIM Config drop down selection, select R-UIM only then write to phone (it would ask for SPC number, just put the number you copied on step d and press ok and make sure you let the green bar finish otherwise you RISK bricking your phone)
f) do step 4 again to set it to WCDMA preferred
g) pop in a gsm sim if you haven't already (I tested mine with T-mobile). It would say no service at first but don't worry. go to Settings > Mobile data > Network mode > and select GSM/UMTS Only. then go back and select Available GSM networks > select the first option (cant remember what its called and it would take about 3-5min.) Then select your carrier (in my case T-mobile) and it would say registering something and after that I have the signal bars and it works now with my T-mobile
since I did not made the steps, all credits to where its due.
pradeepvizz for posting the s-off guide
elvisypi, TK Tech News, xerxes1987, thatotherguy.. for sim unlock guide
htconeroot.com for awesome unlock and root guide
and to people who made the tools that I don't know about
I have a dumb question.
If I SIM unlock will I be able to utilize my local carrier's gsm data network. They said they won't be able to, but I believe with the right settings/hacks it can be done.
Another thing to add, my locK. Arrier has JUST one phone that utilizes its 4g Ltd and that is the LG as840, is there a way to modify the phone to use it?
The data is slow as pooh over cdma, I believe my phone is in evdo mode or what ever. I would like to perhaps switch carrier's for faster data.
Great guide I will try when I access the pc I put my adb stuff on.
Another question.
Do I have to stay on 4.1.2? Or can I just flash a nandroid and move forward with it?
raclimja said:
hi after hours of trying to make my phone work with GSM Sim (T-Mobile), i successfully managed to make it work and here are all the steps I did so other people who can't make it hopefully will see this guide atleast somewhat helpful
here is what i did:
1) first of all, i s-off my HTC One (H-boot 1.55, 3.05.651.6)
-here is the guide i followed
-the same guide but in video
2) flashed the Sprint_HTC_One_m7wls_1.29.651.10_RUU.zip (to downgrade to 4.1.2)
-it is the solution 3), a) here
3) Unlock and root the phone
-a very good guide
note: to make the developer option appear under settings you NEED to go to Settings > About > Software Information > More > and TAP the build number about 7 TIMES, after that the Developer options would appear on settings.
4)The sim unlock guide here
5)Then the GSM Fix connection drop here
-I followed the guide made by xerxes1987 because it is free
exact steps i did:
a) put the phone in CDMA preferred (see step 4 for ref)
b) Dial ##3424# and make sure you tap on and tap the SELECT (VERY IMPORTANT!!!)
c) go to device manager and manually install the driver for HTC DIAG 9k ONLY(you dont want to mess with the one without the 9k) can be found here note: DO NOT download the 9K (COM105) as it is an adware program
d) download, extract and run CdmaDevTermV.2 then scan for ports > select HTC Diag 9k > connect. Under SPC/Lock on the drop down arrow select HTC and scan (you need to copy that number generated). after that select disconnect and close program
e) download and install QPST. run the QPST config. Under ports make sure you select and enable the HTC diag. then under Start Clients select service programming and select your phone and press OK. scroll to the right till you find 1x/HDR Security. Under R-UIM Config drop down selection, select R-UIM only then write to phone (it would ask for SPC number, just put the number you copied on step d and press ok and make sure you let the green bar finish otherwise you RISK bricking your phone)
f) do step 4 again to set it to WCDMA preferred
g) pop in a gsm sim if you haven't already (I tested mine with T-mobile). It would say no service at first but don't worry. go to Settings > Mobile data > Network mode > and select GSM/UMTS Only. then go back and select Available GSM networks > select the first option (cant remember what its called and it would take about 3-5min.) Then select your carrier (in my case T-mobile) and it would say registering something and after that I have the signal bars and it works now with my T-mobile
since I did not made the steps, all credits to where its due.
pradeepvizz for posting the s-off guide
elvisypi, TK Tech News, xerxes1987, thatotherguy.. for sim unlock guide
htconeroot.com for awesome unlock and root guide
and to people who made the tools that I don't know about
Click to expand...
Click to collapse
Hi, I have finished all step up to step g. When I select available GSM network-> search for available network, the phone doesn't show up anything. Any advice? What can I do? I'm sure I have T-mobile signal here since I have been using T-mobile
Thanks for this guide. Its really helping me inch my way closer. I heard however that I need to flash an earlier sprint htc one radio in order to connect to domestic gsm networks... Is this true? I have done so and can not pick up any signal whatsoever. i have completed all the steps as well.
Lawrencechung said:
Hi, I have finished all step up to step g. When I select available GSM network-> search for available network, the phone doesn't show up anything. Any advice? What can I do? I'm sure I have T-mobile signal here since I have been using T-mobile
Click to expand...
Click to collapse
keep doing the available gsm search until T mobile appears.
I did mine about 4 times before it appeared.
Hi raclimja,
In my phone when I go to Settings > Mobile data > Network mode, it gives me only 2 options (LTE/CDMA and CDMA Only) there is no GSM option. So my question is about if I will follow this whole guide, will I see GSM options in Network Mode then? I have HTC Desire 816 (virgin mobile) CDMA phone and I want to unlock in to my GSM carrier looks like a great guide with a success rate .
Please reply. Thank you.
I flashed older radio after that unlock was complete I'm on lollipop

S4 SPRINT UNLOCK L720/l720t full gsm 4G/LTE unlock att/tm/international!!!!!

Please wait for tomorrow I will post a video and also a Lolipop rom since everyone wants it THIS WILL DELETE EVERYTHING OFF YOUR DEVICE
AND IF YOU HAVE L720T ONLY WITH 5.0 OR HIGHER THIS WONT WORK FOR YOU SORRY
i also have the unlock for the lg g2 HERE
and also the lg g3 HERE
lets start with
(DO NOT SKIP ANY STEPS FOR ANY REASON )
first if you have l720 you need to be on version 4.4.2 or lower if not you have to downgrade from HERE
if you are l720t with lollipop then you are out of luck
SO YOU WILL NEED COUPLE OF THINGS
FIRST LETS START WITH FILES YOU NEED ON YOUR COMPUTER
1.odin
2.l720:ROOT (IMPOTANT) YOU WILL NOW WHY
l720t:ROOT (IMPOTANT) YOU WILL NOW WHY
2.TWRP (SAME ONE FOR BOTH DEVICES)
3.for l720:SPH-L720_MDC_Modem.tar.md5
for l720t:SPH-L720t_mk5_Modem.tar
2nd what you will need on your device
1.SSU.apk
2.stock m919 rom (this is important for 4g/lte)
(this will also make your phone 100% stock tm)
alright lets start
first flash the modem and the root though odin
turn off the phone then press and hold the vol- and home and power and the same time then press vol+ when it ask you to continue
then plug in the phone to the pc
put the root in the PDA/AP selection
and put the modem in the "phone" selection and press start wait for it
you phone should reboot into a red screen wait for it to finish it will reboot by it self.
now open the supersu and disable Knox(important) if you don't you will have problems in the service later on
now install SSU.apk and open it and tap "UNLOCK"
now go to dialer and dial *#0011#
now it should go into a page with writing on it now tap menu and select back <-(do this twice)
now tap menu and tape key input and put a capital Q
and tap OK
now tap menu again and tap key input and put 0000 (four zeros) and tap OK and wait for a new screen to come on
now tap umts
(to go back tap menu then back (DO NOT PRESS THE BACK BUTTON))
UMTS Main Menu
1 Debug Screen -> 6 Phone Control -> 1 DRX Control = GSM DRX: ON / LTE DRX: Enables RX0 and RX1
1 Debug Screen -> 6 Phone Control -> 2 Fake Security Control = ON
1 Debug Screen -> 6 Phone Control -> 3 Nas Control -> 1 Ciphering Control = OFF
1 Debug Screen -> 6 Phone Control -> 3 Nas Control -> 2 Integrity Control = ON
1 Debug Screen -> 6 Phone Control -> 3 Nas Control -> 3 Sim Class Control = UMTS
1 Debug Screen -> 6 Phone Control -> 3 Nas Control -> 5 RRC(HSPA) Contrl -> 2 Change Revision -> 5 Release 8 (HSPA+)
1 Debug Screen -> 6 Phone Control -> 3 Nas Control -> 7 NAS Avoid Security Control = 2 Security_check: OFF
1 Debug Screen -> 6 Phone Control -> 3 Nas Control -> 8 BIP Block = 2 BIP Unblocking: set 1
1 Debug Screen -> 6 Phone Control -> 5 Simulation -> 2 SW Watchdog <--hit this 6 times
1 Debug Screen -> 6 Phone Control -> 5 Simulation -> 3 HW Watchdog <--hit this 6 times
then go back to the first page and tape CDMA then common then tap next page twice then tap 8 pref mod set and tap 2 GSM_WCDA
now reboot
Congrats
now your phone is unlock but only 3g
so now make sure your phone picks up signal before keep going
now comes the 4g/lte part
make sure you have the rom on the phone
now go into download mode again and put the TWRP.tar into the PDA/AP selection and uncheck autoreboot
now hit start and wait for the loading to finish after it says PASS
now take out your battery and wait 10 sec then put it in then press vol+ and home and power at the same time now you should see TWRP screen wait then tap wipe then slide to factory reset then press home then tap install the choose the m919 rom that you have downloaded then slide to install
after its done tape wipe cache/devilk then slid to wipe the just restart your device
Congrats now your phone is fully unlock with 4g/lte and you should be set for life :good::good::good::good::good:
please donate
paypal: [email protected]
their you have it , have fun guys
IF YOU HAVE L720 AND YOU WANT TO GO BACK TO SPRINT FOR SOME REASON JUST DO THE DOWNGRADE
​
Error
Thanks for the post, I have been trying this for a few days without success.
I hit a couple of snags after being rooted and installing the modem image as per your instructions.
1. I can't disable knox, are there more details you can provide?
2. ssu doesn't run it says "unfortunately, SSU has stopped".
I went through the dialer options anyway just to see what would happen and it appears that I still get a invalid sim card without the ability to enter the unlock code.
I figured I would do all the steps again in order to have a clean install once it's all tested and working but no luck.
Also in the step where you say "1 Debug Screen -> 6 Phone Control -> 5 Simulation -> 2 SW Watchdog <--hit this 6 times" should I basically exit the dialer with back at that moment since going back many times doesn't get me back to the menu's?
One other question, I see this is android 4.2 if I do a firmware update from T-Mobile taking it to Lollipop will I loose the functionality of the phone/modem?
Thanks!
MiamiMike said:
Thanks for the post, I have been trying this for a few days without success.
I hit a couple of snags after being rooted and installing the modem image as per your instructions.
1. I can't disable knox, are there more details you can provide?
2. ssu doesn't run it says "unfortunately, SSU has stopped".
I went through the dialer options anyway just to see what would happen and it appears that I still get a invalid sim card without the ability to enter the unlock code.
I figured I would do all the steps again in order to have a clean install once it's all tested and working but no luck.
Also in the step where you say "1 Debug Screen -> 6 Phone Control -> 5 Simulation -> 2 SW Watchdog <--hit this 6 times" should I basically exit the dialer with back at that moment since going back many times doesn't get me back to the menu's?
One other question, I see this is android 4.2 if I do a firmware update from T-Mobile taking it to Lollipop will I loose the functionality of the phone/modem?
Thanks!
Click to expand...
Click to collapse
Which version are you on and is it L720 or l720t
Disabling k ow is part of supersu so just look up another way to root your device and when you root it it's should ask you if you want to disable know just hit ok and the watchdog thing it's OK just reboot .
nfsmww said:
Which version are you on and is it L720 or l720t
Disabling k ow is part of supersu so just look up another way to root your device and when you root it it's should ask you if you want to disable know just hit ok
Click to expand...
Click to collapse
L720, but it never asked to disable it. Running Android 5.0.1
Also, SSU doesn't run ( I'm guessing in Lollipop ).
So I got everything working on my L720T.. My only concern is that will I be stuck on 4.3 if I want to keep LTE? I noticed the ROM I installed was actually a T-Mobile rom, any chance I could use a Lollipop T-Mobile ROM? Or is this version made to work with L720/L720T?
Hi i bought the s4 at first i didn't know if it was rooted or not but further investigations i found out it was rooted. The phone doesn't have that ssu apk nor superuser.apk which is kinda odd i ran apps that require root access and they worked fine i didn't receive any pop ups to allow access or block. I want to install a rom for which i need to install a recovery now my question is do i have to root again?
Q. How do i know what modem is currently installed ?
Q. Also at first i could see my carrie's name in notification bar now i see sprint is it locked again i can still use my sim and i am getting signals
Pease help i'm new to flashing modems.
Thanks in advance
sameer9092 said:
Hi i bought the s4 at first i didn't know if it was rooted or not but further investigations i found out it was rooted. The phone doesn't have that ssu apk nor superuser.apk which is kinda odd i ran apps that require root access and they worked fine i didn't receive any pop ups to allow access or block. I want to install a rom for which i need to install a recovery now my question is do i have to root again?
Q. How do i know what modem is currently installed ?
Q. Also at first i could see my carrie's name in notification bar now i see sprint is it locked again i can still use my sim and i am getting signals
Pease help i'm new to flashing modems.
Thanks in advance
Click to expand...
Click to collapse
Best thing to do is start over and just follow every step by step you should have unlock just do what I told you in the thread , just go slow step by step I explained everything you Don't need to check anything
davorsake said:
So I got everything working on my L720T.. My only concern is that will I be stuck on 4.3 if I want to keep LTE? I noticed the ROM I installed was actually a T-Mobile rom, any chance I could use a Lollipop T-Mobile ROM? Or is this version made to work with L720/L720T?
Click to expand...
Click to collapse
You could but the phone is going to lag a lot and freeze my friend did that but sometimes it just freezes
MiamiMike said:
L720, but it never asked to disable it. Running Android 5.0.1
Also, SSU doesn't run ( I'm guessing in Lollipop ).
Click to expand...
Click to collapse
You need to downgrade from the link I have in the post please guys don't skip steps and read carefully
doing the rooting process again won't harm phone right
nfsmww said:
You need to downgrade from the link I have in the post please guys don't skip steps and read carefully
Click to expand...
Click to collapse
I did downgrade the modem 100% as the instructions state, but in the end the sim card doesn't work.
Running Lollipop 5.0.1 SSU won't run, so I can't do the "unlock" part.
sameer9092 said:
doing the rooting process again won't harm phone right
Click to expand...
Click to collapse
You have to consider your warranty and carrier support if you root your phone.
I have rooted my phones hundreds of times without issues.
Pretty much everyone on this site I'm sure can say the same.
As long as you are careful to follow instructions you should be fine.
MiamiMike said:
I did downgrade the modem 100% as the instructions state, but in the end the sim card doesn't work.
Running Lollipop 5.0.1 SSU won't run, so I can't do the "unlock" part.
Click to expand...
Click to collapse
Downgrade your firmware not your modem , I am talking about downgrading them both READ CAREFULLY FOR GOD'S SAKE
nfsmww said:
Downgrade your firmware not your modem , I am talking about downgrading them both READ CAREFULLY FOR GOD'S SAKE
Click to expand...
Click to collapse
You are correct, I started in the download section of the instructions missing the first important part to downgrade first!
New Issue: Image provided IOdin executable fails several times, I use Odin so I'm familiar with the process, do you have an image onlY?
Let me ask you, once I go through the process can I upgrade to Lollipop OTA from TMobile or some other ROM without breaking the modem functionality?
Thanks!
MiamiMike said:
You are correct, I started in the download section of the instructions missing the first important part to downgrade first!
New Issue: Image provided IOdin executable fails several times, I use Odin so I'm familiar with the process, do you have an image onlY?
Let me ask you, once I go through the process can I upgrade to Lollipop OTA from TMobile or some other ROM without breaking the modem functionality?
Thanks!
Click to expand...
Click to collapse
I don't get it do u want Lolipop or ur phone working just do it and not you will have 4.4.2
We're only asking questions that we assume you would have the answer to. No need for hostility.
I have completed the steps EXACTLY as written twice without success.
Has anyone been able to accomlish this?
MiamiMike said:
I have completed the steps EXACTLY as written twice without success.
Has anyone been able to accomlish this?
Click to expand...
Click to collapse
This can be accomplished but not with his guide for he is missing some steps. Most likely copied and pasted from another thread found here:
http://forum.xda-developers.com/showthread.php?t=2530610
Use this ^ if you wish for a Domestic Unlock and a International Unlock.
Then if you want 4G LTE just follow this guides flashing of the M919 Stock ROM which is from the T-Mobile Galaxy S4.
Enjoy~
HermitDash said:
This can be accomplished but not with his guide for he is missing some steps. Most likely copied and pasted from another thread found here:
http://forum.xda-developers.com/showthread.php?t=2530610
Use this ^ if you wish for a Domestic Unlock and a International Unlock.
Then if you want 4G LTE just follow this guides flashing of the M919 Stock ROM which is from the T-Mobile Galaxy S4.
Enjoy~
Click to expand...
Click to collapse
Thanks! This worked!!!, a few kinks and I may simply redo the process to be safe since there are a lot of steps.
If I put lolipop on here will I then trash it?
Since I'm not at the Ninja level on this, couldn't someone create a AOKP rom with a clean AOSP, drop in the drivers from the sprint phone ( which I beleive are really just the modem ) using the downgraded modem already unlocked and create a custom ROM? Then the user can get the benefits of keeping up with Android updates more frequently while using there hardware on the GSM platform? ( wow thats a long question )
MiamiMike said:
Thanks! This worked!!!, a few kinks and I may simply redo the process to be safe since there are a lot of steps.
If I put lolipop on here will I then trash it?
Since I'm not at the Ninja level on this, couldn't someone create a AOKP rom with a clean AOSP, drop in the drivers from the sprint phone ( which I beleive are really just the modem ) using the downgraded modem already unlocked and create a custom ROM? Then the user can get the benefits of keeping up with Android updates more frequently while using there hardware on the GSM platform? ( wow thats a long question )
Click to expand...
Click to collapse
Lollipop will work on it, the latest it has is the OD2 firmware which is Android 5.0.1 if I'm not mistaken. I'm using the exact one and it still works. As for custom roms, you can use any since the modem is just a plugin of a sort. So if you want to do that all you need is to stay on the MDC modem make sure you are unlocked and working with T-Mobile or what ever carrier. THEN flash over to the AOSP/AOKP or what ever rom you want and it should work. The only reason you need to be on stock firmware is to do the Unlocking via Dialer Secret codes. But after that you should be working perfectly fine with AOSP/AOKP. If I remember correctly there should be a GPE (Google Play Edition) rom somewhere in the Dev forum for GS4 have a look around!
Good luck.

Radio Band is stuck to USA Band as a result of which one sim ( airtel) is NO NETWORK

I by mistake through short cut master lite app changed the radio band to USA.... since then I am not able to get network on one of my sim....have tried swapping sim ....even downgraded the firmware ....but still the band is stuck at USA......ONE Plus 3T is currently on oxygen OS Nougat beta version.....kindly help
saurabhcfp said:
I by mistake through short cut master lite app changed the radio band to USA.... since then I am not able to get network on one of my sim....have tried swapping sim ....even downgraded the firmware ....but still the band is stuck at USA......ONE Plus 3T is currently on oxygen OS Nougat beta version.....kindly help
Click to expand...
Click to collapse
Hi,
Type this code *#*#4636#*#* in your Dialer app and it will show up a menu. Select Phone information, then tap the 3 dots menu on the top right corner, and there you can select the band you want from that list.
Hope it helps
Regards
hi
I have dialled this no. many times but i get only USA Band in the option.......so i can't change it as there is no other band option available
smilirulz said:
Hi,
Type this code *#*#4636#*#* in your Dialer app and it will show up a menu. Select Phone information, then tap the 3 dots menu on the top right corner, and there you can select the band you want from that list.
Hope it helps
Regards
Click to expand...
Click to collapse
saurabhcfp said:
I by mistake through short cut master lite app changed the radio band to USA.... since then I am not able to get network on one of my sim....have tried swapping sim ....even downgraded the firmware ....but still the band is stuck at USA......ONE Plus 3T is currently on oxygen OS Nougat beta version.....kindly help
Click to expand...
Click to collapse
I think flashing the modem zip may work. There is a thread here for the the oneplus 3 (A3000 & A3003). My op3t is a3003.
I am not sure if those modem zips work for our 3T.
Try finding the stock/custom ROMs for the modem zip and flash it.
i am not able to find modem zip for one plus 3t...build no is ONEPLUSA3003_28_161229
i am not able to find modem zip for one plus 3t...build no is ONEPLUSA3003_28_161229
Tagtag123 said:
I think flashing the modem zip may work. There is a thread here for the the oneplus 3 (A3000 & A3003). My op3t is a3003.
I am not sure if those modem zips work for our 3T.
Try finding the stock/custom ROMs for the modem zip and flash it.
Click to expand...
Click to collapse
saurabhcfp said:
i am not able to find modem zip for one plus 3t...build no is ONEPLUSA3003_28_161229
Click to expand...
Click to collapse
You could just flash the OOS 4.0 modem only zip, after you of course backup the current EFS. If it works, well and good, if it doesn't format it and lock the bootloader. Take it to the service centre.

attempting to permanently enable band 28 on tencent+WW rom?

Band 28 can be force enabled via Network Signal Guru and works, but it does not persist upon exiting the app.
Is there any method to do so permanently?
So far:
1) "EfsTools.exe setModemConfig -p lte.json" does not work with either the WW or CN+b28 configs.
2) QPST 2.7 does not read the modem configs properly
3) QXDM does not read the LTE files, returns an error. Also the newest version on xda appears to be from 2009.
4) DFS tools fails to do anything. It reads all bands as active and setting bands to write didnt do anything
5) network signal guru settings do not persist upon exiting the app, but can be used to temporarily enable b28 for testing purposes. For best results, disable all other LTE bands.
6) /policyman/ files do not contain anything pending to band28, using "<include> 28 </include>" in carrier_policy_original.xml_Subscription01 does nothing.
7) band 28 is apparently enabled by default on SIM2 (thanks @attachsnow ), but this is incompatible with homerSP's VoLTE/VoWi-FI guide???
I suspect there's a hidden file that temporarily overwrites the main config files every boot, bit i lack the skill to find out. Either that, or SIM1 has some special configs or hardware issues with B28 that SIM2 does not
Have the same problem here. I found that sim 2 can use band 28 but not in sim 1.
Could you share more information for this?
Maybe we can found some files in vendor folder that is the same as country value.
attachsnow said:
Have the same problem here. I found that sim 2 can use band 28 but not in sim 1.
Could you share more information for this?
Maybe we can found some files in vendor folder that is the same as country value.
Click to expand...
Click to collapse
I'm no android developer, just a "power user" at best. I merely tested every guide for enabling VoLTE or bands for any android phone on xda I could find. I wouldn't have the skill to make up a new method.
Band 28 is detected on SIM2 without needing network guru app's lock, but i cannot get the VoLTE guide to work with it. Guess it's still something, maybe we can force volte on sim2.
I've tried a bunch of things to enable bands myself, including band 28, but I have yet to find a solution - anything I do just seems to revert when rebooting and I have no clue what causes that.
I have updated EfsTools to allow writing the settings for the second SIM, you can find it here: https://github.com/HomerSp/EfsTools/releases/tag/0.10-modded-1.2.
Simply download that, and run this, and you should be good to go on the second SIM slot (no need to re-run the other commands):
Code:
EfsTools.exe uploadDirectory -i mcfg_sw.mbn -o / -s 1
Now I'm wondering what restrictions are on SIM2 as it appears to only detect 3g b5 and 4g b28? I will test a bit further
deltarz said:
Now I'm wondering what restrictions are on SIM2 as it appears to only detect 3g b5 and 4g b28? I will test a bit further
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Seems to work fine here, though I get the same exact bands enabled as I do on SIM1, so there's sadly no difference there.
Small update: I'm not entirely sure we can completely trust the list of LTE bands listed Network Signal guru. I say this because toggling the bands there doesn't seem to do anything, but more importantly, I modified /policyman/carrier_policy.xml and removed the LTE band I'm usually connected to (B1) and rebooted. After booting again it would no longer connect to LTE, but this wasn't reflected at all in Network Signal Guru - it still had all bands except 28 ticked.
As a test you could try writing this to efs:
https://gist.github.com/dc57c830fef5a0690709b3a95842bafa
Code:
EfsTools.exe writeFile -i carrier_policy.xml -o /policyman/carrier_policy.xml
That will disable all bands except B28. My carrier doesn't support that band, so I can't check if it works myself.
Here's the stock carrier_policy.xml if you want to restore it after testing:
https://gist.github.com/cb4cd5114013add0432eeb1afdc26ce9
HomerSp said:
Small update: I'm not entirely sure we can completely trust the list of LTE bands listed Network Signal guru. I say this because toggling the bands there doesn't seem to do anything, but more importantly, I modified /policyman/carrier_policy.xml and removed the LTE band I'm usually connected to (B1) and rebooted. After booting again it would no longer connect to LTE, but this wasn't reflected at all in Network Signal Guru - it still had all bands except 28 ticked.
As a test you could try writing this to efs:
https://gist.github.com/dc57c830fef5a0690709b3a95842bafa
Code:
EfsTools.exe writeFile -i carrier_policy.xml -o /policyman/carrier_policy.xml
That will disable all bands except B28. My carrier doesn't support that band, so I can't check if it works myself.
Here's the stock carrier_policy.xml if you want to restore it after testing:
https://gist.github.com/cb4cd5114013add0432eeb1afdc26ce9
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I agree. Well, it's not that important anymore but, Network Signal Guru's bands do not apply to SIM2. It still shows B28 as disabled. Forcing toggles do nothing to anything in SIM2 besides forcing a reconnect on both SIMs. That and how the bands never persist upon exiting the app for SIM1 does imply that it can't be trusted whenever things are changed.
Anyway, I can connect to b 3,5,7 & 28 for 4G just fine, which is all of Telstra. They do have some rare b1 & b8 sites but I don't know where they are to test that. However, I would assume they work. 3G is harder to test as they only use B3.
If you need any further testing on B28 matters, let me know.
For now, the SIM2 workaround is good enough. Highly doubt there'll come a time where the SIM2 slot dies before anything else breaks or the phone is replaced, or the situational requirement of two B28 SIMs.
If we use Network Signal guru to check B28 only on sim 1 slot, use NetMonster app that it shows B28 is connected.
But there is no CA with B28. So it has a little difference with sim 2 slot.
Is there any update?
If I root my phone, will network guru open band 20 on my UK version phone?
On kimovil site they say the tencent ultimate version (512gb/12gb) ram has all bands, including 28 and MiMO 4x4. Anyone can confirm this, please? Thanks in advance! ROG Phone 2 512gb/12gb on Kimovil
Had B28 working with WW rom on Tencent phone in second sim slot. Now updated to Android 10 second slot fix is broken, that band is gone now.
I fastboot back to Android 9 with raw rom and that didn't bring back b28. Have no idea where to go from here, I was relieved to finally have 4G where I live.
onlyadequate said:
Had B28 working with WW rom on Tencent phone in second sim slot. Now updated to Android 10 second slot fix is broken, that band is gone now.
I fastboot back to Android 9 with raw rom and that didn't bring back b28. Have no idea where to go from here, I was relieved to finally have 4G where I live.
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Yes, I found that android 10 will let second slot missing Band 28. Could you share your flash back android 9 method? Are you using one raw file or 21 img file? Thank you.
attachsnow said:
Yes, I found that android 10 will let second slot missing Band 28. Could you share your flash back android 9 method? Are you using one raw file or 21 img file? Thank you.
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Went to this thread and downloaded the first WW raw https://forum.xda-developers.com/rog-phone-2/how-to/1910-64-ww-update-t4021947 put phone into fastboot mode, flashall_AFT.cmd back to Android 9. Note that my bootloader is locked, but from looking around it seemed like I didn't need to unlock it to roll back.
Sorry don't know what 21 image file is, I'm new to this stuff.
onlyadequate said:
Went to this thread and downloaded the first WW raw https://forum.xda-developers.com/rog-phone-2/how-to/1910-64-ww-update-t4021947 put phone into fastboot mode, flashall_AFT.cmd back to Android 9. Note that my bootloader is locked, but from looking around it seemed like I didn't need to unlock it to roll back.
Sorry don't know what 21 image file is, I'm new to this stuff.
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Could you please provide fastboot.log file after you rollback?
Maybe we could see which file cannot flash back.
attachsnow said:
Could you please provide fastboot.log file after you rollback?
Maybe we could see which file cannot flash back.
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Here's the log file
https://pastebin.com/acCDD66i
onlyadequate said:
Here's the log file
https://pastebin.com/acCDD66i
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Hi, just a guess. Have you ever try flash CN android 9 Rom again then flash back to WW?
attachsnow said:
Hi, just a guess. Have you ever try flash CN android 9 Rom again then flash back to WW?
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I've thought about flashing back to cn, but haven't done it yet. Use a different phone now but I'll try your idea sometime

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