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I have dual sim Lenovo P780.
PROBLEMS:
DEFAULT SIM SLOT (supports WCDMA and GSM) - works fine only on WCDMA /3G. When I put it on "GSM only" it goes dead - "connection error", "emergency calls only" and all that.
SECOND SIM SLOT (which is GSM only) doesn't work att all.
The sim cards are fine (checked it on other phones).
I also put other sim cards in my phone (and swich them around) => same result - sim 1 only 3G, sim 2 dead
Both of them see the providers but have no signal on gsm/2G mode.
Thanks,
Same problem here?
Any workarounds yet?
Cheers
i have the same problem and I cannot find a solution...
Change radio module ( modem).
the same problem here,
badmania98 said:
Change radio module ( modem).
Click to expand...
Click to collapse
I cant find another one, only for S920.
This is my P780 (S920, S820 are compatible) modem collection :
modem P780.zip
http://www51.zippyshare.com/v/55282913/file.html
But:
1. For Chinese model I recomend V51 or V52 ( on the battery is written in chinese). Both sims works but no WCDMA 900 band( chinese version doesnt have this frecvency) . I use V51.
2. For European model V20, V26. (on the battery is not written in chinese). If it used on chinese model will be no signal on Sim2 (x sign)
How to install:
Download and unzip the file modem P780.zip. Chose modem file.
1. Put the modem file (zip) on the SD
2. Use CWM, TWRP or mobileUncle
3. Install modem from recovery
4. Wipe cache
5.Reboot
Let me know if it works.
badmania98 said:
This is my P780 (S920, S820 are compatible) modem collection :
modem P780.zip
Click to expand...
Click to collapse
Great! Thank you.
Your zip is stored on my computer
Nothing helped, I gave all a try.
But now I found out, thats a problem if my local provider and his radio cell.
When I leave my home cell, all is fine.
I installed S920 V17 modem and both slots works for me now on my P780.
Lenovo P780 3G not working in sim1
Hi Badmania,
I also recently bought a lenovo P780. i didnt realise it was a chinese model only after going through your post. i got a little problem with this handset and i hope u can help me out with it. Slot 1 probably supports 2g/3g connection but i am not able to get 3g connection in the slot 1. i tried swiping the same sim card in another handset of different brand and i can use 3G without any problem. slot 2 works fine with 2g.i am a newbie to this android and i dont have any idea about CWM, TWRP or mobileUncle. i would appreciate and be grateful if you could post step by step procedure to change the radio module ( modem) for Lenovo P780 chinese model. i cant read Chinese and its a big problem for me. Looking forward to hear from you soon.
Regards
Stuck Half way
Download and unzip the file modem P780.zip, chose Modem file= SUCCESS
1.Put the modem file(zip) on the SD= SUCCESS
2. Use CWM TWRP or Mobile Uncle= Downloaded mobile Uncle but cant proceed
Steps i took on mobile Uncle:
1. Clicked "Into Recovery Mode" on mobile Uncle> Reboot to Recovery> OK> WARNING!! ROOT REQUEST!! > Please Root your Android First!!...............i cant proceed further from here! PLEASE HELP ME!
Root + TWRP
Root+ TWRP
Read me file inside.
http://www62.zippyshare.com/v/50541818/file.html
Confused
Dear Badmania,
Thank you so much for your help and support though i couldn't execute the solutions you have provided above properly.
Finally i realized why my 3G connection on slot 1 wasn't working after doing a vast research online. I found out that, in order to use 3G in my country(BHUTAN), i must have a smart phone that supports GSM- 850/900/1800 MHz & WCDMA 850/1900/2100 MHz Frequencies. My network service provider told me that i wont be able to use 3G without these Frequencies in BHUTAN.
As per my knowledge, Lenovo P780(chinese model) supports GSM- 900,1800,1900; UMTS-2100 only. I am worried and confused what to do now. From where and how to add GSM- 850 MHz on this handset?????
Will i be able to solve my problem with the solutions you have provided in your previous post??? OR is there a different procedure to overcome this problem. Please help me, i like this smartphone(lenovo P780) so much that i don't want to switch on to another smartphone.
Regards,
Install mobileUncle Tools from GooglePlay.
Open the program.
Under Engineer Mode\Engineer Mode (MTK)\ BandMode\ you will find Sim 1 and Sim2, where you can see what bands are availlable. GSMMode (2G) and WCDMA (3G).
This is it. You can not add other band.
As I know, the chinese model ( mine also)has only WCDMA2100 ( on mobileUncle is WCDMA-IMT-2000). I need WCDMA -GSM 900 but ...it is not possible. It is not a software but hardware issue.
There are 2 versions of P780. One with 4G storage with WCDMA 2100, and one with 8G storage with WCDMA 900&2100 .
Thank you!
Thanks a lot, Now i regret buying this phone to be used in my country!
Please help
i have install root acces on my chinese p780
But i have problem when i try to install v51 modem for my sim card 2 to work in romania.
i have installed twrp manager and granted super user acces.
on my sd card i put the V51+s820.zip file
When i enter TWRP manager / INSTALL / External SDcard / select V51+s820.zip and then when i slide to install the device rebot into Android system recovery 3e and i dont know what to chose... i chose apply update from sdcard and sdcard2 then the android logo of installing apear for 1-3 minute (and i dont see anthing installing) and then the decive reebots.
Please help.. i dont know how o do it..
You already have the answer with what you do wrong, on the romanian forum.
install modem driver to P780
Hello!
I need some help. I've bought a Lenovo P780 phone and when I put in my SIM, I realized there is no signal and the phone can't connect to the network. After some advices I tried to install modem drivers. I downloaded the drivers from badmania98's upload. I copied them to the phone internal memory (tried with SD card too, with no result). I started TWPR manager (tried with mobileuncle too), pressed install, selected one of the unzipped pack, eg. v52 Modem_P780_V52.zip. Slide the slider, my phone reboot, I got the system recovery. I choose apply update from sdcard (or sdcard2 from external SD card) and choose my zip file. My output is:
-- Install /sdcard ...
Installation aborted.
Neither of zips work. What should I try? Did I miss something?
Thanks
Daniel
I need some assistance please.
Hello badmania I am in need of some assistance from you please. I bought my Lenovo P780 and as I've seen and heard, people are having bad signal quality. I was looking online trying to see if there was a way to solve this problem. I ended up on this website and saw your steps on how to do it, but honestly I have no idea what I'm doing. I was wondering if you could sort of guide me through the process please. I would really appreciate it.
Thanks,
Moises
Hey. I have the same kind of problem (chinese Lenovo P780, trying to use it in Hungary with a GSM 900 / 1800 provider) but the weird thing is that the phone loses signal occasionally. I mean if I check the phone, about 7 times of 10 there is no signal. I tried out a lot of modems (found on a russian blog) then I tried out the modems posted in here, but it's still the same. I checked the settings in engineer mode and everything is turned on. Please tell me what is going on.
nandude said:
Hey. I have the same kind of problem (chinese Lenovo P780, trying to use it in Hungary with a GSM 900 / 1800 provider) but the weird thing is that the phone loses signal occasionally. I mean if I check the phone, about 7 times of 10 there is no signal. I tried out a lot of modems (found on a russian blog) then I tried out the modems posted in here, but it's still the same. I checked the settings in engineer mode and everything is turned on. Please tell me what is going on.
Click to expand...
Click to collapse
I have the same problem I'm sending the phone back to the store and asking for a replacement.
I had another P780 2 months back (dropped into water} and there was no such problem.
As most users already know, there is a bug in the dual-SIM ICS FTF if you flash it on Xperia E, not being able to manually save APNs. Infact, not being able to create them at all.
Well, I had this and fixed this problem on xmoose's XBoosT ROM , but since its based on the stock ICS firmware, it'll work for it too.
Here's what you want to do to fix it :
METHOD 1:
Disable 'Data Transfer" : Go to Settings > (under Wireless and Networks) More.... > Mobile Networks > UNTICK 'Data Enabled'
Go Back, and turn ON Airplane Mode
Wait till its completely turned on
As soon as its turned on, turn it back OFF
Now go set up your APNs!!
Hit the THANKS !!
P.S : I believe the bug was because the ROM could not detect the MCC and MNC port numbers of your respective carrier. But this fixes it. Weird.
UPDATE: Looks like this bug exists in the Dual SIM variant too. To fix it on DS phones, follow these: OK, it seems the bug isn't device-specific. Just try either method (if Method 1 doesn't work, try Method 2)
METHOD 2:
NOTE: You'll need a working Wi-Fi network with for this!
Connect to any Wi-Fi network
Go to Settings > Dual SIM card > Untick SIM 1, and then tick it back again
Go to Settings > Xperia (TM) > Internet settings
The APNs should get downloaded and be working!
(Thanks to @TheRealSS for Method 2)
Will try this,if you are sure it works,let @UltraGamerHD note this in his Official thread under "How To"
NeoTrix said:
Will try this,if you are sure it works,let @UltraGamerHD note this in his Official thread under "How To"
Click to expand...
Click to collapse
Will Do!
KDB223 said:
As most users already know, there is a bug in the dual-SIM ICS FTF if you flash it on Xperia E SS, not being able to manually save APNs. Infact, not being able to create them at all.
Well, I had this and fixed this problem on xmoose's XBoosT ROM , but since its based on the stock ICS firmware, it'll work for it too.
Here's what you want to do to fix it :
Disable 'Data Transfer" : Go to Settings > (under Wireless and Networks) More.... > Mobile Networks > UNTICK 'Data Enabled'
Go Back, and turn ON Airplane Mode
Wait till its completely turned on
As soon as its turned on, turn it back OFF
Now go set up your APNs!!
Hit the THANKS !!
P.S : I believe the bug was because the ROM could not detect the MCC and MNC port numbers of your respective carrier. But this fixes it. Weird.
UPDATE: Looks like this bug exists in the Dual SIM variant too. To fix it on DS phones, follow these:
NOTE: You'll need a working Wi-Fi network with for this!
Connect to any Wi-Fi network
Go to Settings > Dual SIM card > Untick SIM 1, and then tick it bak again
Go to Settings > Xperia (TM) > Internet settings
The APNs should get downloaded and be working!
(Thanks to @TheRealSS for the fix for DS)
Click to expand...
Click to collapse
thank you. it works.
KDB223 said:
As most users already know, there is a bug in the dual-SIM ICS FTF if you flash it on Xperia E, not being able to manually save APNs. Infact, not being able to create them at all.
Well, I had this and fixed this problem on xmoose's XBoosT ROM , but since its based on the stock ICS firmware, it'll work for it too.
Here's what you want to do to fix it :
METHOD 1:
Disable 'Data Transfer" : Go to Settings > (under Wireless and Networks) More.... > Mobile Networks > UNTICK 'Data Enabled'
Go Back, and turn ON Airplane Mode
Wait till its completely turned on
As soon as its turned on, turn it back OFF
Now go set up your APNs!!
Hit the THANKS !!
P.S : I believe the bug was because the ROM could not detect the MCC and MNC port numbers of your respective carrier. But this fixes it. Weird.
UPDATE: Looks like this bug exists in the Dual SIM variant too. To fix it on DS phones, follow these: OK, it seems the bug isn't device-specific. Just try either method (if Method 1 doesn't work, try Method 2)
METHOD 2:
NOTE: You'll need a working Wi-Fi network with for this!
Connect to any Wi-Fi network
Go to Settings > Dual SIM card > Untick SIM 1, and then tick it back again
Go to Settings > Xperia (TM) > Internet settings
The APNs should get downloaded and be working!
(Thanks to @TheRealSS for Method 2)
Click to expand...
Click to collapse
dude i followed each and every step and it would work for the time being but after just one reboot the prob comes again all my apn accounts r gone but able to revive by following this procedure again and again. cant there be any permanent fix for this problem.
aahanable said:
dude i followed each and every step and it would work for the time being but after just one reboot the prob comes again all my apn accounts r gone but able to revive by following this procedure again and again. cant there be any permanent fix for this problem.
Click to expand...
Click to collapse
ya.. even for me after first reboot the apn disappeared but still I could connect to the internet. after some reboots (didn't count) the apn reappeared all by itself !
EDIT : now my phone saves the apn's sent as a msg from my operater. this wasn't working before ¿¿
smz2014 said:
ya.. even for me after first reboot the apn disappeared but still I could connect to the internet. after some reboots (didn't count) the apn reappeared all by itself !
EDIT : now my phone saves the apn's sent as a msg from my operater. this wasn't working before ¿¿
Click to expand...
Click to collapse
Well, atleast its working now...wasn't that the whole point?
I have a Xperia Z5 UK model E6653. But it does not have Volte enabled? Any idea on how to enable it?
I have tried the following:
1. Tried installing EE firmware to check if VoLTE is getting enabled
2. Ran the code *#*#4636#*#* and check for VoLTE provisioning flag. The flag is present but I am unable to toggle it. It displays Turn Off VoLTE provisioning flag.
Any help would be appreciated. Please note that I am currently with Virgin 4G plan.
livelyyoungman said:
I have a Xperia Z5 UK model E6653. But it does not have Volte enabled? Any idea on how to enable it?
Click to expand...
Click to collapse
The patch has not been tested in the call to HD since my carrier does not support VoLTE.
The patch activates flags VoLTE.
And yet, you need to find the settings of the access point to the IMS operator, and enter them in the APN.
Install the patch via twrp recovery.
Firmware 32.3.A.0.376.
samavar89 said:
The patch has not been tested in the call to HD since my carrier does not support VoLTE.
The patch activates flags VoLTE.
And yet, you need to find the settings of the access point to the IMS operator, and enter them in the APN.
Install the patch via twrp recovery.
Firmware 32.3.A.0.376.
Click to expand...
Click to collapse
Works great on e6683. 376fw
No reebot on sim on/off
But receive weak network indoors
Voice calling not working on volte
rajdeep312 said:
Voice calling not working on volte
Click to expand...
Click to collapse
Thank you for the test, I will continue to test.
You can try to change the modem in accordance with its operator.
For this you need to modify the line ro.build.type=user to ro.build.type=userdebug in /system/build.prop and reboot the device.
Then you need to install QuickShortcutMaker and click on the Customization Selector and make a shortcut for the Modem Switcher.
After opening the Modem Switcher, select the modem in accordance with its operator.
And most importantly, you need the original keys TA (maybe). Them in - you can invest using the Trim Area Of Proof Of Concept. Continue to test.
Beta 2.3 will activate VoLTE and Wi-Fi Calling.
not working in my z5 dual
livelyyoungman said:
I have a Xperia Z5 UK model E6653. But it does not have Volte enabled? Any idea on how to enable it?
I have tried the following:
1. Tried installing EE firmware to check if VoLTE is getting enabled
2. Ran the code *#*#4636#*#* and check for VoLTE provisioning flag. The flag is present but I am unable to toggle it. It displays Turn Off VoLTE provisioning flag.
Any help would be appreciated. Please note that I am currently with Virgin 4G plan.
Click to expand...
Click to collapse
I flashed it, but volte option is not available in my z5.. M using jio sim
---------- Post added at 03:15 AM ---------- Previous post was at 03:12 AM ----------
livelyyoungman said:
I have a Xperia Z5 UK model E6653. But it does not have Volte enabled? Any idea on how to enable it?
I have tried the following:
1. Tried installing EE firmware to check if VoLTE is getting enabled
2. Ran the code *#*#4636#*#* and check for VoLTE provisioning flag. The flag is present but I am unable to toggle it. It displays Turn Off VoLTE provisioning flag.
Any help would be appreciated. Please note that I am currently with Virgin 4G plan.
Click to expand...
Click to collapse
I flashed it, but volte option is not available in my z5 dual 6683..m using jio sim card
samavar89 said:
You can try to change the modem in accordance with its operator.
For this you need to modify the line ro.build.type=user to ro.build.type=userdebug in /system/build.prop and reboot the device.
Then you need to install QuickShortcutMaker and click on the Customization Selector and make a shortcut for the Modem Switcher.
After opening the Modem Switcher, select the modem in accordance with its operator.
And most importantly, you need stock keys TA. Them in - you can invest using the Trim Area Of Proof Of Concept. Continue to test.
Click to expand...
Click to collapse
Volte on working on beta 2 version
rajdeep312 said:
Volte on working on beta 2 version
Click to expand...
Click to collapse
After some time, I'll test the patch on a suitable operator.
samavar89 said:
Thank you for the test, I'm glad the beta is working! After some time, I'll test the patch on a suitable operator.
Click to expand...
Click to collapse
Sorry but volte not working only calling possible on specific app
rajdeep312 said:
Sorry but volte not working only calling possible on specific app
Click to expand...
Click to collapse
The operator gave You the opportunity to make a VoLTE call?
samavar89 said:
The operator gave You the opportunity to make a VoLTE call?
Click to expand...
Click to collapse
Yes but in india fw volte calls works from stock dialer
But after flashed your patched volte showing in settings but unable to call from stock dialer
I downgraded to MM 6.0 from 7.0 because i dont like 7.0 using Flashtool. Now the problem is I dont find any VoLTE option under More Network Settings. So I couldnt call from my Jio. Please anybody help me.
Xperia Z5 Dual E6683
sulthanbatcha said:
I downgraded to MM 6.0 from 7.0 because i dont like 7.0 using Flashtool. Now the problem is I dont find any VoLTE option under More Network Settings. So I couldnt call from my Jio. Please anybody help me.
Click to expand...
Click to collapse
You can try to install the patch for the firmware 32.2.A.5.11, but I can't guarantee stable work.
You need to change the modem in accordance with its operator, and add the profile to the IMS APN.
Then you need to install QuickShortcutMaker and click on the Customization Selector and make a shortcut for the Modem Switcher. After opening the Modem Switcher, select the modem in accordance with its operator.
Who installed these patches, please write if it works with your carrier.
A few days ago, wanted to test the patch, but failed. Operator is not connected IMS me as the phone has not been tested on their support for VoLTE.
After installation, you need to choose a modem in accordance with its operator.
You need to install QuickShortcutMaker, then open it to make a shortcut using the app then go to Customisation Selector \ Modem Switcher. Open Modem Switcher and select modem according to your network operator. If the selection of the modem's cellular network is not, then restart the phone.
You also need to restore the access point default to the new profile activated! ( Settings>More>Mobile network>APN>Reset to default )
If VoLTE does not work and You know that your operator you hooked VoLTE, then you need to change the APN in the profile apns-conf.xml (patch_ims_for_xperia_z5_beta_Nougat_Roms.zip\oem\android-config\apns-conf.xml). You need to find the profile of the IMS of the operator and to add to the "type" parameter "xcap". You should get something like this:
Code:
<apn carrier="Test IMS"
mcc="001"
mnc="01"
apn="ims"
type="ims,xcap"
protocol="IPV4V6"
roaming_protocol="IPV4V6"
/>
And most importantly, you need the original keys TA.
IMS description
RCS description
If VoLTE doesn't work, you will have to edit the "nv item" or "amss_fsg_***.mbn" (\system\etc\customization\modem\).
Maintain feedback to know if the patch is working.
Updated patch VoLTE.
info
new patch
grayleshy said:
Updated patch VoLTE.
info
- fix apns-conf.xml
Click to expand...
Click to collapse
Hi @grayleshy,
I would like to ask this patch will work with all bands and all operators?
My operator Turkcell in Turkey, it supports VoLTE&VoWifi but not Z5.
Only:
- iPhone 6, 6 Plus, 6S, 6S Plus, 7, 7 Plus, SE
- Samsung S6, S6 Edge, S7, S7 Edge
- LG K10 (2017 model), G4, G5, V20
If not work, how can we add this for Turkey operators (Turkcell, Vodafone, Turk Telekom)?
sceryavuz said:
I would like to ask this patch will work with all bands and all operators?
Click to expand...
Click to collapse
This patch activates only support of VoLTE and Wi-Fi Calling.
sceryavuz said:
If not work, how can we add this for Turkey operators (Turkcell, Vodafone, Turk Telekom)?
Click to expand...
Click to collapse
For start on these operators it is necessary to make the following:
1. It is necessary to edit an APN profile (patch_ims_for_xperia_z5_beta_Nougat_Roms.zip\oem\ android-config\apns-conf.xml ; patch_ims_for_xperia_z5_beta_Nougat_Roms.zip\data\customization\ota-config\apns-conf.xml)
Find mcc="286" and change the profile Turkcell IMS at:
Code:
<apn carrier="Turkcell IMS"
mcc="286"
mnc="01"
apn="ims"
type="ims,xcap"
protocol="IPV4V6"
/>
Add:
Code:
<apn carrier="Vodafone IMS"
mcc="286"
mnc="02"
apn="ims"
type="ims,xcap"
protocol="IPV4V6"
/>
<apn carrier="AVEA IMS"
mcc="286"
mnc="03"
apn="ims"
type="ims,xcap"
protocol="IPV4V6"
/>
XCAP - The software of the smartphone sees access point of ims and requests a configuration according to the xcap protocol. In reply, from server side, xhml the response which loads in a software arrives and makes authorization on the ims domain with the subsequent activation of a functionality on the device.After a flashing of the changed apn, it is necessary to make so: Settings>More>Mobile network>APN>Reset to default.
2. If the operator does not support protocol xcap, you will have to edit the "nv item" (easier) or configurators amss_fsg_***.mbn.
Hi @grayleshy
Thanks for your reply.
I tried XCAP for 2 zips, but not work. I tried to change amss_fsg_***.mbn, not for Turkcell. I don't know what "nv item" is. Found this thread, but don't know what should I do with this.
Hi there,
First, my apologies for my English ( I am not English native speaker) anyhow,
Today I managed to change my LG V20 H990DS AME ( Middle east ) to AU (Australia).
And one of the bounces I got is VoLte icon (Still didn't confirm if it is actually working)
The procedure doesn't require to flash a new rom, all what you need to do is the following:
- go to the root and find the folder /CUST (Use any root explorer)
- Open "open_path_mapping.cfg" and "op_list.cfg"
- You will see AU and AME have unique values ( in my case 57 for AU and 71 for AME).
- in both files write AU value for AME and vice versa.
- do factory reset ( all AU APKs and frameworks will be installed automaticly instead of AME stuff).
- once your mobile opened, in initialization wizard, Australia will be the default country.
- You will find the VoLte in the hidden tiles.
I am still exploring new changes.
Wish you all the luck.
Regards...
Note:
- This is experimental procedure, do it on your own responsibility.
- You can backup all your apps and files using LG backup, and you can restore them once the procedure is done.
- Same procedure can be done to all LG V20 phones
Wouldn't it have been easier using KDZWriter?
This is only sn alternative way of doing it.
Moreover, KDZWriter didn't work in my case.
why do you need volte in middle east anyway ?
lg v20 h990ds here with latest gcc rom and mk2000 v1.5 kernel systemless root magisk xposed
sniper9911 said:
why do you need volte in middle east anyway ?
lg v20 h990ds here with latest gcc rom and mk2000 v.15 kernel systemless root magisk xposed
Click to expand...
Click to collapse
I don't understand the reason for this question, but the answer, because most of the mobile networks here support VoLTE.
H990DS for GCC doesn't support VoLTE.
yeah i know they support ... but what is the actual advantage ... i dont see it sorry
if you know what kind of applications for this volte service let me know
sniper9911 said:
yeah i know they support ... but what is the actual advantage ... i dont see it sorry
if you know what kind of applications for this volte service let me know
Click to expand...
Click to collapse
I assume that the OP is living in India, and an user of Reliance Jio. In case you don't know, that particular Indian carrier only has 4G bands, so if your phone doesn't support VoLTE, you won't be able to make calls at all on that carrier.....
Not without Jio's app I guess. But everyone seem to hate it.
phamanhvu01 said:
I assume that the OP is living in India, and an user of Reliance Jio. In case you don't know, that particular Indian carrier only has 4G bands, so if your phone doesn't support VoLTE, you won't be able to make calls at all on that carrier.....
Not without Jio's app I guess. But everyone seem to hate it.
Click to expand...
Click to collapse
wow ... why would they limit themselves for that band only .... thanks for the answer
sniper9911 said:
wow ... why would they limit themselves for that band only .... thanks for the answer
Click to expand...
Click to collapse
I dunno, cost-cutting I guess since Jio has some of the cheapest plan in Inida. You're welcome though.
Did it work for you?
T-Mobile US H990DS user here, I converted to ESA instead of AU and have not factory resetted (is it really necessary). I also edited my MCC and MNC into the config files for ESA and the icon does show up but IMS never connects.\
I posted further on this here:
https://forum.xda-developers.com/v20/development/enabling-ims-v20-h990ds-t3790486
p7810456 said:
Did it work for you?
T-Mobile US H990DS user here, I converted to ESA instead of AU and have not factory resetted (is it really necessary). I also edited my MCC and MNC into the config files for ESA and the icon does show up but IMS never connects.\
I posted further on this here:
https://forum.xda-developers.com/v20/development/enabling-ims-v20-h990ds-t3790486
Click to expand...
Click to collapse
Yes, it is required to do a factory resit, as e.g. some of AME apps are different than AU apps and those apps will be installed during first run after device format.
In your case the information only will be cganged, but not the apps as well.
MaZeNsMz said:
Yes, it is required to do a factory resit, as e.g. some of AME apps are different than AU apps and those apps will be installed during first run after device format.
In your case the information only will be cganged, but not the apps as well.
Click to expand...
Click to collapse
What partitions do I format and can I keep my internal storage if not my apps?
p7810456 said:
What partitions do I format and can I keep my internal storage if not my apps?
Click to expand...
Click to collapse
TO be hones I am not sure, please check yourself if formatting "Storage" partition is the one. Of course all your data will be deleted. So, in all cases back up all partitions using TWRIP and move your data to external io external flash before proceeding.
You may also use LG backup, to back up all apps and their data, so after formatting "Storage" you will be able to restore all apps and their data.
Please do a little search about this procedure.
Regards...
MaZeNsMz said:
Hi there,
First, my apologies for my English ( I am not English native speaker) anyhow,
Today I managed to change my LG V20 H990DS AME ( Middle east ) to AU (Australia).
And one of the bounces I got is VoLte icon (Still didn't confirm if it is actually working)
The procedure doesn't require to flash a new rom, all what you need to do is the following:
- go to the root and find the folder /CUST (Use any root explorer)
- Open "open_path_mapping.cfg" and "op_list.cfg"
- You will see AU and AME have unique values ( in my case 57 for AU and 71 for AME).
- in both files write AU value for AME and vice versa.
- do factory reset ( all AU APKs and frameworks will be installed automaticly instead of AME stuff).
- once your mobile opened, in initialization wizard, Australia will be the default country.
- You will find the VoLte in the hidden tiles.
I am still exploring new changes.
Wish you all the luck.
Regards...
Note:
- This is experimental procedure, do it on your own responsibility.
- You can backup all your apps and files using LG backup, and you can restore them once the procedure is done.
- Same procedure can be done to all LG V20 phones
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Were you able to connect ?
p7810456 said:
Did it work for you?
T-Mobile US H990DS user here, I converted to ESA instead of AU and have not factory resetted (is it really necessary). I also edited my MCC and MNC into the config files for ESA and the icon does show up but IMS never connects.\
I posted further on this here:
https://forum.xda-developers.com/v20/development/enabling-ims-v20-h990ds-t3790486
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nkirk said:
Were you able to connect ?
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Connect to what ?!
MaZeNsMz said:
Connect to what ?!
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Volte and make calls?
nkirk said:
Volte and make calls?
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My cell number is from "Zain", in Zain they allow Wifi calling and VoLte for Iphones only. So I didn't test that.
MaZeNsMz said:
My cell number is from "Zain", in Zain they allow Wifi calling and VoLte for Iphones only. So I didn't test that.
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Ok. Are you able to see the options in the call setting to enable advanced calling /Volte?
VoLte is not there, I found it only in the main sliding menu in the main screen.
https://ibb.co/jx6rFo
Ok. Sometime back I also managed to enable the hidden menu options (ims)with lots of XML edits in cust folder and a factory reset. But volte never connected. Also the options were not visible in call settings menu. I had to stop testing as this was my main device. Need to test more but the factory rest is keeping me from doing it.
Would you know any region which has VOLTE enabled by default for global carriers? I could try flashing the cus partition and see. Mine is sea. Only has official VOLTE enabled for SG and TW carriers.
Why:
You imported the phone to India from another country and now VoLTE doesn't work for you. Maybe you unwittingly messed with your phones "/odm" partition.
This guide will help you get back the VoLTE functionality for INDIAN MOBILE CARRIERS*. Participate in the poll you want similar guide for other countries.
*might work for Bangladesh, Nepal etc.
Before:
Make sure your carrier supports VoLTE or VoWiFi.
Stock or stock based ROMs.
You should have at least TWRP or root.
Where:
Download the UNFLASHABLE files from here.
How:
-=:TWRP METHOD:=-
Extract the downloaded file, "volte_twrp.zip", to the root of your internal or external storage.
Internal Storage: /storage/emulated/0/TWRP (may not be the same for you)
External Storage: /storage/0000-0000/TWRP (may not be the same for you)
Reboot to recovery.
Select "Backup" from TWRP menu.
Hit "Select Storage".
Select the storage you extracted the downloaded file to.
You should see "2019-05-22-05-24-06_treble....". Select it.
You should see a single entry for "/odm" under "Select Partitions to Restore". Select it if it isn't already.
Uncheck "Enable Digest Verification..."
Swipe to restore. Restart to "System".
-=:root METHOD:=-
I haven't tried this. Let me know!
With your favorite file explorer obtain root access for "/odm".
Replace contents of "/odm" with files extracted from the downloaded file, "volte_root.zip".
Restart.
Good tutorial, but wouldn't be easier just to flash with odin the modem and csc for the specific carrier? It works even on Pie with older oreo modem/csc. You don't need root or twrp.
Tested myselsf, first Pie update was for Russia. Flashed it, but I lost wifi call and volte. So i downloaded oreo stock for my country(Romania - Orange) and flashed the modem and csc. Got back wifi call and volte.
kimitza said:
Good tutorial, but wouldn't be easier just to flash with odin the modem and csc for the specific carrier? It works even on Pie with older oreo modem/csc. You don't need root or twrp.
Tested myselsf, first Pie update was for Russia. Flashed it, but I lost wifi call and volte. So i downloaded oreo stock for my country(Romania - Orange) and flashed the modem and csc. Got back wifi call and volte.
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This method only works if both the firmwares are for the same model. For examples I cannot flash Indian(SM-A750FN) firmware on a device I obtained from Malaysia(SM-A750GN) because they are different models (FN<->GN). For more information read my other guide.
Hi my phone model SM-A750FN, purchased in Europe and using in India and volte not working , only jiovoice call app working . With this app I can't access bank apps due auto verification failure ... I checked the CSC available list and I didn't found Indian CSC .... Please help me what to do
ch.snehith said:
Hi my phone model SM-A750FN, purchased in Europe and using in India and volte not working , only jiovoice call app working . With this app I can't access bank apps due auto verification failure ... I checked the CSC available list and I didn't found Indian CSC .... Please help me what to do
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some changes and instructions need to work this fix
After changing that your file worked for me
ch.snehith said:
some changes and instructions need to work this fix
After changing that your file worked for me
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i have the model SM-A750F/DS bought from dubai.. same issues ..cant access banking apps through jio call app..plz help bro
OK ..finally i have got volte working..its not a big deal at all..self experimnet is everything.
follow the steps
1. goto updato.com search for the firmware SM-A750F and refine the search for India (INS) and the android version 9
2.get the latest firmware and download it.
3.need odin version Odin3_v3.13.1 or above to flash it.
4.enable oem unlock and usb debuggin in developer option.
5.extract the firmware with 7zip, run odin as administartor and
select AP>AP, BL>BL , CP>CP, and important CSC>shud select CSC and not HOME CSC.
put your mobile on download mode flash the firmware.reboot will take a while be patient.
and VoLte wil be there..