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Hi,
I came accross this problem that it's driving me nuts. Any help would be much appreciated.
DEVICE
L5 e612f - originally SIM locked to Telcel Mexico - trying to make it work with Spanish SIM and networks.
Rooted
Unlocked bootloader
Installed CWM recovery
Installed CM10.1 - also tried latest CM10 nightly 7/7/2013 and a stock LG Rom -> I experience the same problem
PROBLEM IN SHORT
The phone is SIM locked to Telcel Mexico.
I thought that rooting/unlocking bootloader/using a custom ROM would allow me to use other SIM but I don't know if I'm right.
Anyway, if I try to sim unlock it with a purchased code, I can't because the phone won't prompt me for an unlock code, either by using a non-allowed sim or using the codes for my phone.
Could this be because I'm not longer in Mexico and I'm using the device in Roaming mode?
For more details, please check hidden text.
MORE DETAILS
The phone will only search for and connect to networks if the original sim is inside. With another SIM, the phone won't detect or connect to any carriers.
If I put another SIM it won't give any error... it asks for the normal sim PIN and logs into the system, but no network is available.
The phone won't say the SIM is not allowed or ask me for an unlocking code it with a non original SIM
The codes to SIM unlock doesn't seem to work, I tried:
2945#*612#
2945#*71001#
2945#*610#
but the dialer returns
'USSD Code running'
and finally
''Connection problem or invalid MMI code'
With the original (Telcel Mexico) SIM everything goes OK.
With an Orange SIM from Spain, the phone asks for the normal SIM pin when I turn it on, then logs into the system and it won't connect to any network.
If I go to Settings - Wireless & Network - More - Mobile Networks - Network operators
a message pops in saying - 'Error while searching for networks'
The same message pops in if I tap on 'Search Networks'
If I tap into 'Choose Automatically' the phone says 'Registered on network', but the signal is still 0 and no carrier is selected.
If I tap into 'Choose Automatically' again, the phone returnns 'The sim card doesn't allow a connection to this network' after a minute or so saying 'Automatic Registration'
Extra data
With CM10 Nightly 7/7/2013 the phone has the same issue even with the original SIM inside
With stock Rom, I have the same issue as with CM10.1 (only works with original sim)
So my questions are:
1) Is my phone SIM locked even after unlocking bootloader + custom ROM?
2) If it is SIM locked, why is it allowing me to log with another SIM instead of showing a typical 'sim locked' message
3) If it's SIM locked, could I unlock it with a purchased code in Roaming mode... if so... how?
4) If I revert to an original Telcel firmware would it ask me for the unlocking code?
5) Tried adb fastboot oem unlock but the phone reboots and gets stuck into the fastboot screen - could this be a corrupted bootloader issue?
Many thanks in advance
dobert said:
Hi,
I came accross this problem that it's driving me nuts. Any help would be much appreciated.
DEVICE
L5 e612f - originally SIM locked to Telcel Mexico - trying to make it work with Spanish SIM and networks.
Rooted
Unlocked bootloader
Installed CWM recovery
Installed CM10.1 - also tried latest CM10 nightly 7/7/2013 and a stock LG Rom -> I experience the same problem
PROBLEM IN SHORT
The phone is SIM locked to Telcel Mexico.
I thought that rooting/unlocking bootloader/using a custom ROM would allow me to use other SIM but I don't know if I'm right.
Anyway, if I try to sim unlock it with a purchased code, I can't because the phone won't prompt me for an unlock code, either by using a non-allowed sim or using the codes for my phone.
Could this be because I'm not longer in Mexico and I'm using the device in Roaming mode?
For more details, please check hidden text.
MORE DETAILS
The phone will only search for and connect to networks if the original sim is inside. With another SIM, the phone won't detect or connect to any carriers.
If I put another SIM it won't give any error... it asks for the normal sim PIN and logs into the system, but no network is available.
The phone won't say the SIM is not allowed or ask me for an unlocking code it with a non original SIM
The codes to SIM unlock doesn't seem to work, I tried:
2945#*612#
2945#*71001#
2945#*610#
but the dialer returns
'USSD Code running'
and finally
''Connection problem or invalid MMI code'
With the original (Telcel Mexico) SIM everything goes OK.
With an Orange SIM from Spain, the phone asks for the normal SIM pin when I turn it on, then logs into the system and it won't connect to any network.
If I go to Settings - Wireless & Network - More - Mobile Networks - Network operators
a message pops in saying - 'Error while searching for networks'
The same message pops in if I tap on 'Search Networks'
If I tap into 'Choose Automatically' the phone says 'Registered on network', but the signal is still 0 and no carrier is selected.
If I tap into 'Choose Automatically' again, the phone returnns 'The sim card doesn't allow a connection to this network' after a minute or so saying 'Automatic Registration'
Extra data
With CM10 Nightly 7/7/2013 the phone has the same issue even with the original SIM inside
With stock Rom, I have the same issue as with CM10.1 (only works with original sim)
So my questions are:
1) Is my phone SIM locked even after unlocking bootloader + custom ROM?
2) If it is SIM locked, why is it allowing me to log with another SIM instead of showing a typical 'sim locked' message
3) If it's SIM locked, could I unlock it with a purchased code in Roaming mode... if so... how?
4) If I revert to an original Telcel firmware would it ask me for the unlocking code?
5) Tried adb fastboot oem unlock but the phone reboots and gets stuck into the fastboot screen - could this be a corrupted bootloader issue?
Many thanks in advance
Click to expand...
Click to collapse
Ok, I solved the issue so I'm leaving my answer here, in case someone ever has the same problem.
The problem with SIM lock is that CM doesn't work with the sim unlocking codes.
So to SIM unlock you have to revert to any original/stock firmware, unlock the sim, then you can use a custom firmware.
And SIM unlocking works with roaming... meaning that you don't even have to be in the original country/network to unlock.
dobert said:
Ok, I solved the issue so I'm leaving my answer here, in case someone ever has the same problem.
The problem with SIM lock is that CM doesn't work with the sim unlocking codes.
So to SIM unlock you have to revert to any original/stock firmware, unlock the sim, then you can use a custom firmware.
And SIM unlocking works with roaming... meaning that you don't even have to be in the original country/network to unlock.
Click to expand...
Click to collapse
My Telcel 612F is on original firmware with an orginal sim but when I dial 2945#*612 nothing comes up.
I heard you can flash an unbranded firmware to unlock, but I can't seem to find an unbranded firmware for 612F.
is there a way to unlock this phone?
metriod said:
My Telcel 612F is on original firmware with an orginal sim but when I dial 2945#*612 nothing comes up.
I heard you can flash an unbranded firmware to unlock, but I can't seem to find an unbranded firmware for 612F.
is there a way to unlock this phone?
Click to expand...
Click to collapse
Hi
I flashed the firmware from this website - http://lg-phone-firmware.com/index.php?id_mod=12
And it worked like a charm. I used v20A. Also check the code which is 2945#*612# and then the dial button.
Good luck!
dobert said:
Hi
I flashed the firmware from this website - http://lg-phone-firmware.com/index.php?id_mod=12
And it worked like a charm. I used v20A. Also check the code which is 2945#*612# and then the dial button.
Good luck!
Click to expand...
Click to collapse
There are some many 20A verison. just flash the same company as your own cell?
I have a Telcel so do this one? TCL/TELCEL(MEXICO) 20A LGE612F 356.47 MiB 1577
Are all those firmware unbranded, just flash the same company?
Thanks for your help.
metriod said:
There are some many 20A verison. just flash the same company as your own cell?
I have a Telcel so do this one? TCL/TELCEL(MEXICO) 20A LGE612F 356.47 MiB 1577
Are all those firmware unbranded, just flash the same company?
Thanks for your help.
Click to expand...
Click to collapse
Hi metriod... that's the one that I've flashed and worked for me. It is branded to Telcel tough, but after sim unlocking you can root and install any mod of your choice.
dobert said:
Hi metriod... that's the one that I've flashed and worked for me. It is branded to Telcel tough, but after sim unlocking you can root and install any mod of your choice.
Click to expand...
Click to collapse
Thank dobert!
a question
dobert said:
Hi
I flashed the firmware from this website - xxxx://lg-phone-firmware.com/index.php?id_mod=12
And it worked like a charm. I used v20A. Also check the code which is 2945#*612# and then the dial button.
Good luck!
Click to expand...
Click to collapse
A question you got the unlock code from the SIM directly with your carrier or with any app in particular?
Thanks in advance
Una pregunta donde obtuviste el codigo de liberacion de la SIM, directo con tu operador o con alguna app en particular?
De antemano gracias, si no esta bien en ingles, es la traduccion de google
Finally it works!!!
This worked for me as well, I spent a whole day triying to fix this issue, aparently THE ONLY WAY THAT THE UNLOCK MENU WILL COME UP is by using the 250 TCL/TELCEL(MEXICO) 20A LGE612F 356.47 MiB firmware.
I wanted also to share some knowledge that I gathered today.
After you flash this firmware, you will not be able to downgrade to any V10XXX.kdz. This includes the one that unlocks the bootloader and enables clockworkmod recovery menu V10D_unlock.kdz. The only way that I´ve found to overcome this was by using a kdz file designed to downgrade, is called V10D_downgrade.kdz that I´ve found over the net. I have a mediafire link but Im not shure if I can post it here.
DO NOT GET SCARED IF YOU CAN NOT GET INTO DOWNLOAD MODE no more (I almost cry), this is also caused by this firmware, instead of pressing vol+ and vol- while connecting to usb, just press vol- and connect the usb cable the use the V10D_downgrade.kdz if you want to downgrade or simply install cyanogen mod.
Regards.
bafler said:
This worked for me as well, I spent a whole day triying to fix this issue, aparently THE ONLY WAY THAT THE UNLOCK MENU WILL COME UP is by using the 250 TCL/TELCEL(MEXICO) 20A LGE612F 356.47 MiB firmware.
I wanted also to share some knowledge that I gathered today.
After you flash this firmware, you will not be able to downgrade to any V10XXX.kdz. This includes the one that unlocks the bootloader and enables clockworkmod recovery menu V10D_unlock.kdz. The only way that I´ve found to overcome this was by using a kdz file designed to downgrade, is called V10D_downgrade.kdz that I´ve found over the net. I have a mediafire link but Im not shure if I can post it here.
DO NOT GET SCARED IF YOU CAN NOT GET INTO DOWNLOAD MODE no more (I almost cry), this is also caused by this firmware, instead of pressing vol+ and vol- while connecting to usb, just press vol- and connect the usb cable the use the V10D_downgrade.kdz if you want to downgrade or simply install cyanogen mod.
Regards.
Click to expand...
Click to collapse
I offer a little more knowledge from what bafler said, for someone that can't downgrade the firmware from 4.1.2 original stock v20 to 4.0.3 stock v10, the trick is to root and install both CWM and Bootloader, then install a CM based rom, wait until its finished and booted up, enter in CWM menu and install a v10 baseband patch to downgrade it, see this post http://forum.xda-developers.com/showthread.php?t=2275969. Before that patch and doing some full wipes, you can flash the original stock firmware based on ICS with KDZ, using with the phone off Vol+ and Vol-, and connect the USB cable.
Hope it can save someone, was the only method that works for me. So sorry for my english, im from chile.
Hi,
I have a Galaxy S4 i9505 lte that was locked to three Ireland, I unlocked it using the guide http://forum.xda-developers.com/showthread.php?t=2282683.
I put my meteor ireland sim card in the phone and it was not recognised, no pin request, nothing. I put my wife's meteor sim card in and it worked no problem, i put another meteor sim in and it worked no problem, both times asking for pin number.
I put my meteor sim in another phone and it worked no problem, even asking for a pin number.
I went to the meteor shop and exchanged my sim card in the hope it was the card and not the phone. I put the new sim card into the phone and it asked for a pin number but would not work, it worked in three different phones but not my phone and three different meteor sims worked in my phone no problem.
I tried different roms both times, stock-cyanogen-others, none worked with mine and all worked with the other sims, so I guess the phone is unlocked.
Am I missing something, maybe in *#0011# settings that my number is locked out of the phone even though it worked on Three Ireland.
I hope someone can help me.
Whytie
You need to downgrade your modem. Read the last pages of that thread. There is all you need.
Possible try the setting in the hidden menu. I have the E300K I put a different Sim card and it would not register. I went into the hidden menus and changed some of the settings and forced it to read the card and change carriers. I can't tell you exactly what they were I don't have the phone in front of me right now, I'm at work.....if you use *#0011#, you will need to hit back, then key enter, type Q0 and enter or Q000 and enter, wait about 10 seconds or so it will put you in the hidden menu, or you could type the main code and password. Not sure what it would be for your phone.
@2ndcarpenter: Misread the post? The OP had already tried the service menu unlock and found it didn't work. The reason? He didn't downgrade his modem, as mentioned about a half dozen times by me in that thread.
Hi,
Thanks for the replies, but I guess you did misread the post.
I done the guide, which I couldn't have done if I didn't have an older modem.
The unlock actually works with the other meteor sims, just not with my meteor sim, and the sim definitely works in other phones. The pin request I was talking about was the 4 digit sim security one, not the network unlock pin.
So I am still at a loss as to what is wrong.
We all likely misread your post. Now that you explained things however, it's become much more clear. Did you use the service menu method to unlock the S4, or did you use RegionLock Away? The possibility exists that the service menu method may have triggered the SIM pin. If that is the case, then you need to go back into the service menu and set Perso SHA 256 to its original setting. From there, root and run RegionLock Away. If you ran RegionLock Away and it did this, you may be stuck. RegionLock Away's ability to completely unlock the phone is an unintended side effect of its real function, which is to remove Samsung's regional lock list. Chainfire doesn't provide support for the unintended side effect.
Hi,
I used the service menu method to unlock, I will try regionlockaway and see if that maybe will make a difference.
I am already rooted on lollipop but do you think I should downgrade modem again and then run regionlockaway.
Thanks.
Downgrading is required for either unlock method to work.
Strephon Alkhalikoi said:
@2ndcarpenter: Misread the post? The OP had already tried the service menu unlock and found it didn't work. The reason? He didn't downgrade his modem, as mentioned about a half dozen times by me in that thread.
Click to expand...
Click to collapse
Did I misread the post? No, I saw a link which I did not check, and I saw that he 'tried' *#0011#, but I didn't see that he was able to get to the hidden menu. *#0011# does not get you to the hidden menu, it gets you to a debug screen. But I'm sure an expert like yourself already knows that. So without a better explanation I wasn't sure exactly what he tried. I am only trying to offer advice to someone on a device that I don't even use anymore. I still own it and test various firmwares and kernels, but do not use for my daily driver. But between work and my CCNA certification class, I have very little time, so I will stick to what is more important.......me and my education.
Hello readers and devs,
TL;DR
Debranded a Sprint LG G6 --> Factory & Hard Reset phone --> SIM card not being read.
-----
Need help getting my phone back on MetroPCS network after a debrand. I will try to be a thorough as I can for SEO robots and to explain as best I can what I did and what I noticed changing.
!!! action --> I debranded (unbranded, sic) my Sprint LG G6 993 phone using the code provided in the forums, hoping for the best.
I noticed the following changed after debranding:
APNs were locked (not able to create new or edit, however the MetroPCS APN was still there)
Sprint logo during boot gone
WiFi Calling option gone (was not working on MetroPCS network anyway)
mobile settings -> network mode -> GSM and Automatic options missing; set to LTE/CDMA
the cellular network connection to MetroPCS was not functioning properly
SIM card error when a phone call was made, no texting either
So, I naturally read through the forums to try to get the phone working properly again on my network. I read the topic Sprint LG G6 (LS993) Dial Codes.
!!! action --> I used the code ##72786# to "Reset provisioning and makes phone reactivate".
After that, I noticed that the MetroPCS APN was removed. APNs still not editable. At this point after reading some more on the forum I decided that I needed to get the phones MSL code, go into the service menu and edit the APNs from there. However, after getting the MSL and going into the service menu area, the APN area would still not allow me to edit the fields.
I went to MetroPCS to see if they could put a new sim card in the phone, hell for all I knew maybe my sim card was bad, remember when I try to make a call I get a SIM card error message. MetroPCS guy tries some things, calls up a service person on the phone, says nothing is wrong with the sim. Tells me to come back in 30 min. I go over to Sprint, give them the phone and tell them what is happening. They say the phone IS unlocked. Then a sales rep tells me that debranding the phone means that it is no longer a Sprint phone and they will not touch the phone. I ask nicely for a tech supervisor. Sprint supervisor says that I should try to Factory Reset the phone. I go home, backup the phone and do a factory reset.
!!! action --> Factory Reset the phone.
Changes:
mobile settings -> network mode -> GSM and Automatic options appear again; set to Automatic
Still unable to add or edit APNs (the APN area options are all greyed out).
!!! action --> I take out the SIM card and put it into my previous phone (Samsung Galaxy On5) thinking well i need a working phone.
I get an error, On5 is not connecting to the network, needs to be activated.
!!! action --> I take out the sim card and put it back into the LG G6.
Changes:
Invalid SIM card error (phone does not detect the sim card)
The SIM card is not being detected by the phone.
I read the forums some more and discovered a post that referenced a LG G6 that was debranded and to get it working again the owner had to buy a Sprint Prepaid activation SIM to re-provision the phone to get it working again on his alternative network.
I downloaded a SIM Card reader and the LG G6 doesnt give me any information on the sim card. If I put the SIM card into my On5 phone and use the SIM Card reader app I can see that my SIM card is okay and all data is displayed properly for the SIM.
I am not really sure what to do, but try to get a Sprint SIM card and put it in to try to reprovision the phone to Sprint and then move it back over to MetroPCS.
Please help what should I do now to get the phone back on MetroPCS?
Thanks,
Trumpet
TrumpetWinsockError said:
*SNIP*
I downloaded a SIM Card reader and the LG G6 doesnt give me any information on the sim card. If I put the SIM card into my On5 phone and use the SIM Card reader app I can see that my SIM card is okay and all data is displayed properly for the SIM.
I am not really sure what to do, but try to get a Sprint SIM card and put it in to try to reprovision the phone to Sprint and then move it back over to MetroPCS.
Please help what should I do now to get the phone back on MetroPCS?
Click to expand...
Click to collapse
Debranding?
The boot loader is locked so how can you modify anything on the phone?
First I would kdz back to stock.
That is install the version of software unaltered that should have come with the phone.
I'll leave it up to you to search in the QA section.
Once that is done, confirm the phone is unlocked.
You should need to do nothing more than to drop in the Metro SIM to have it work.
If the phone is not unlocked you will get "invalid SIM" messages.
tech_head said:
Debranding?
The boot loader is locked so how can you modify anything on the phone?
Click to expand...
Click to collapse
Firstly, thank you for the read and reply. I was able to debrand the phone utilizing a dial code found in this thread:
sprint-lg-g6-ls993-dial-codes
The thread states:
"##27263# (##BRAND#) - Removes any carrier branding and redetects the carrier based on (NV registry/RUIM/SIM?).
Note: Useful if flashing to Boost Mobile or similar carrier."
After debranding the APN area became un-editable.
tech_head said:
First I would kdz back to stock.
That is install the version of software unaltered that should have come with the phone.
I'll leave it up to you to search in the QA section.
Click to expand...
Click to collapse
I checked this thread:
list-lg-g6-stock-firmware
At this time there is not a Sprint LG G6 KDZ.
tech_head said:
Once that is done, confirm the phone is unlocked.
You should need to do nothing more than to drop in the Metro SIM to have it work.
If the phone is not unlocked you will get "invalid SIM" messages.
Click to expand...
Click to collapse
I need to confirm that the phone is unlocked. I did have a conversation with Sprint technician that said it came up unlocked in their system. It could be possible (although I don not know for sure) that the phone's hardware/software is locked and yet Sprint cell network has the phone unlocked in their system. Maybe I need to purchase an unlock service for the phone?
Have you tried this thread? https://forum.xda-developers.com/sprint-g6/help/mobile-gsm-data-issues-unlock-t3625705
I have the same issued. After "debranding" I can't add a new APN. In my case I do have voice and SMS, but no DATA since I can't add an APN.. Were you able to fix your phone. Please share the solution if you did. Thanks
ultra_dd7 said:
I have the same issued. After "debranding" I can't add a new APN. In my case I do have voice and SMS, but no DATA since I can't add an APN.. Were you able to fix your phone. Please share the solution if you did. Thanks
Click to expand...
Click to collapse
Im also having the sam issue
The only way to fix this is to insert an active sprint sim card with service and dial ##72786# to re-activate
Since i switched to metro pcs ......my sim service is not active
I gotta find someone
ultra_dd7 said:
I have the same issued. After "debranding" I can't add a new APN. In my case I do have voice and SMS, but no DATA since I can't add an APN.. Were you able to fix your phone. Please share the solution if you did. Thanks
Click to expand...
Click to collapse
is your problem solved?
same problem
i have the same problem but i select de uicc unlock and works my mexico sim but just only voice calls and text. apn still greyed out and says otasn on apn settings grayed out too. any solution for this ?
Try this:
Dial 5689#*993# ; go to NAOT + NAO Test + NAO CARRIER (Select NONE).
After that you will be able to edit/add APNs
hi, i just got my (second hand) nexus 6p and so far i like it alot.
updated to 8.1, unlocked the boot loader, installed twrp amd magist to get root all working fine.
the phone seems to be locked to vodafone (uk) as it works ok with a voda sim but when i try a ee sim or 3 uk sim it will not register on the networks and says emergency calls only. the thing thats confusing me is that it does not ask for a unlock code when i try another network sim, every other phone i had has always asked for a code to unlock it. am i missing something or is there another way to input a unlock code if / when i get it from voda or a third party unlocking provider?
cheers / thanks
You might be right but the solution is there check out this page https://support.vodafone.co.uk/Usin...one-device-if-I-m-not-a-Vodafone-customer.htm
thanks to a message from Exodusche my problem is solved. the phone is not network locked at all, when changing the sim for some reason i had to turn off the security pin then reboot the phone and as if by magic after that i had service and everything working fine. some sort of glitch in 8.1 i guess.
My ph is lg v20 ls997!! I dont know its ver, bootloader, lock or unlock i only know android 7.. and i use gsm network (not sprint)(before use when power on its show hand free activation) ?? Yesterday i update to oreo from ota update!! After Update successful all are smooth but simcard show invalid sim and i cant do anything!! Can u guys solve pls bro!! Sry for my nub english ?
ThantSinTun said:
My ph is lg v20 ls997!! I dont know its ver, bootloader, lock or unlock i only know android 7.. and i use gsm network (not sprint)(before use when power on its show hand free activation) ?? Yesterday i update to oreo from ota update!! After Update successful all are smooth but simcard show invalid sim and i cant do anything!! Can u guys solve pls bro!! Sry for my nub english ?
Click to expand...
Click to collapse
Now My Verison Is LS99720a pls solve i need to downgrade or purchase to sprint?? My country hav no sprint carrier
Well, you are kinda boned. There is no LS997 KDZ so you can't downgrade, and you can't use the VS995 KDZ since you are ARB 1.
Lesson learned, don't ever take an OTA update -- period -- rooted or not unless you are not rooted, AND you are using a carrier branded phone ON the carrier it was intended for.
-- Brian
runningnak3d said:
Well, you are kinda boned. There is no LS997 KDZ so you can't downgrade, and you can't use the VS995 KDZ since you are ARB 1.
Lesson learned, don't ever take an OTA update -- period -- rooted or not unless you are not rooted, AND you are using a carrier branded phone ON the carrier it was intended for.
-- Brian
Click to expand...
Click to collapse
Any other setting for invalid sim?? When power on Show ooredoo sim i use and 3 second later show invalid sim any service prevent ?? And i wanna know my device is root or no root '' bootloader unlocked or locked?? Where i check ? Pls help bro
I have the same issue. Downloaded the update and now invalid sim. Can't use phone txt or internet etc. Nothing mobile. Is there any fix for this? Who's fault is this? If my phone is now destroyed, can I get somebody to replace it? LG? Android? Phone was sprint. Used with cricket for around a year until this need the other day. Neither carrier knows how to fix. Thanks
I also have an LS997 GSM Unlocked (I bought it like this, not sure how it was done) and it was still unlocked after update to Oreo LS99720a. I didn't update it while it had the sim inside, and I factory reset after Oreo update. Try toggling network mode in settings to LTE/GSM/WCDMA and between CDMA/LTE + EvDO, but keep it on LTE/GSM/WCDMA. If you didn't properly unlock it, this may be the reason. If you can also see the CDMA Subscription option, set it to RUIM/SIM from NV. You could try DFS CDMA Tool 14 to change this if you can access DIAG mode from the hidden menu. I'm thinking the Sprint-TMobile merger (will be T-Mobile) will result in horrible OTA unlocking methods like they do currently instead of SIMCK, NCK, NSCK, or SIMCK. They'll likely rebrand the LS997 to T-Mobile and introduce their OTA unlock.
For now, try this:
Go into the phone dialer and type: 5689#*997#
Go to Field test > Modem Settings >RAT Selection > SELECT: GSM/WCDMA/LTE Auto
If it doesn't work, select LTE/WCDMA, then toggle back to GSM/WCDMA/LTE Auto
If it still doesn't work, remove the sim and try these steps above without the SIM, then retry.
Don't forget to update your APN settings for your carrier.
patato21 said:
I also have an LS997 GSM Unlocked (I bought it like this, not sure how it was done) and it was still unlocked after update to Oreo LS99720a. I didn't update it while it had the sim inside, and I factory reset after Oreo update. Try toggling network mode in settings to LTE/GSM/WCDMA and between CDMA/LTE + EvDO, but keep it on LTE/GSM/WCDMA. If you didn't properly unlock it, this may be the reason. If you can also see the CDMA Subscription option, set it to RUIM/SIM from NV. You could try DFS CDMA Tool 14 to change this if you can access DIAG mode from the hidden menu. I'm thinking the Sprint-TMobile merger (will be T-Mobile) will result in horrible OTA unlocking methods like they do currently instead of SIMCK, NCK, NSCK, or SIMCK. They'll likely rebrand the LS997 to T-Mobile and introduce their OTA unlock.
For now, try this:
Go into the phone dialer and type: 5689#*997#
Go to Field test > Modem Settings >RAT Selection > SELECT: GSM/WCDMA/LTE Auto
If it doesn't work, select LTE/WCDMA, then toggle back to GSM/WCDMA/LTE Auto
If it still doesn't work, remove the sim and try these steps above without the SIM, then retry.
Don't forget to update your APN settings for your carrier.
Click to expand...
Click to collapse
Carrier Signal show bro ph know carrier too but (invalid sim) still show
Go to the Sprint store (a legit Sprint owned one) and either get a compatible sim or have them fight extra hard to activate the sim you currently have...and idk if your still with Sprint or not...
---------- Post added at 06:12 PM ---------- Previous post was at 06:10 PM ----------
Also if you have the receipt you can try and get the sim unlock code from Sprint but since your not in a contract idk if they will give it to you...
Sprint does not have unlock codes. All you have to do is chat with their international division and they'll uicc unlock it for you.
This is important. Ask them to lock it from their end then ask them to unlock it. If your Sprint phone is paid off and clear then they will unlock it for free to use it on TMO or at&t
I've tried they keep saying that the phone is still unlocked on there end
I can't find these items!
Thanks for your reply.
I have the same exact issue. I tried your method to reach the hidden menu. I only have:
- Device Test
- ELT Test
- Factory Reset
- Log Service
Is there something I am missing?
patato21 said:
I also have an LS997 GSM Unlocked (I bought it like this, not sure how it was done) and it was still unlocked after update to Oreo LS99720a. I didn't update it while it had the sim inside, and I factory reset after Oreo update. Try toggling network mode in settings to LTE/GSM/WCDMA and between CDMA/LTE + EvDO, but keep it on LTE/GSM/WCDMA. If you didn't properly unlock it, this may be the reason. If you can also see the CDMA Subscription option, set it to RUIM/SIM from NV. You could try DFS CDMA Tool 14 to change this if you can access DIAG mode from the hidden menu. I'm thinking the Sprint-TMobile merger (will be T-Mobile) will result in horrible OTA unlocking methods like they do currently instead of SIMCK, NCK, NSCK, or SIMCK. They'll likely rebrand the LS997 to T-Mobile and introduce their OTA unlock.
For now, try this:
Go into the phone dialer and type: 5689#*997#
Go to Field test > Modem Settings >RAT Selection > SELECT: GSM/WCDMA/LTE Auto
If it doesn't work, select LTE/WCDMA, then toggle back to GSM/WCDMA/LTE Auto
If it still doesn't work, remove the sim and try these steps above without the SIM, then retry.
Don't forget to update your APN settings for your carrier.
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