I have a Cricket Galaxy S4 (SCH-R970C) with baseband version R970CVVUAMI3
I tried to sim unlock my phone through this method http://forum.xda-developers.com/show....php?t=2283068.
I did follow all the steps but when I insert another sim (T-mobile), I got an "Invalid Sim" pop up message.
I am thinking of trying this method, but I don't know if it is safe to do so.
is there any way to back up my phone(baseband, etc...) just in case everything screwed up during this process?
do you find the solution
raclimja said:
I have a Cricket Galaxy S4 (SCH-R970C) with baseband version R970CVVUAMI3
I tried to sim unlock my phone through this method http://forum.xda-developers.com/show....php?t=2283068.
I did follow all the steps but when I insert another sim (T-mobile), I got an "Invalid Sim" pop up message.
I am thinking of trying this method, but I don't know if it is safe to do so.
is there any way to back up my phone(baseband, etc...) just in case everything screwed up during this process?
Click to expand...
Click to collapse
Hello my friend do you find the solution to use it the SCH-R970C cricket s4 with gsm
Bumping this for a solution ^^
I have spent hours trying to figure this out for a Cricket SCH-R970C. I would like to use it on straight talk service.
I found this thread http://forum.xda-developers.com/showthread.php?t=2282683 but I do not have a working SIM card in order to try this.
Any help would be appreciated!
I have the latest Quarx CM11 ROM in this device. I had India Airtel 2G sim previously in this device and it used to work without any issues.
After I was forced to replace my 2G sim with 4g sim, the device is not booting up. Booting animation is very very slow and the device will never come back.
If I remove the sim, the device boots up normally. Even it works perfectly fine if I put some other 2G sim.
I tried to change the baseband after removing the sim from the device. I chose south east asia 343_331. Still the device doesn't boot up if i put back the Airtel 4G SIM.
can anyone help me with the issue? thanks
santekkie said:
I have the latest Quarx CM11 ROM in this device. I had India Airtel 2G sim previously in this device and it used to work without any issues.
After I was forced to replace my 2G sim with 4g sim, the device is not booting up. Booting animation is very very slow and the device will never come back.
If I remove the sim, the device boots up normally. Even it works perfectly fine if I put some other 2G sim.
I tried to change the baseband after removing the sim from the device. I chose south east asia 343_331. Still the device doesn't boot up if i put back the Airtel 4G SIM.
can anyone help me with the issue? thanks
Click to expand...
Click to collapse
Same thing happened here, have u found any solution, Airtel 4g sim even work with basic phones, but not in Defy. Since Airtel sim is 128k it has more memory than 64k sim, this is the problem and it is not the bug of Rom because slow boot happened in Stock Rom too.
navinshark said:
Same thing happened here, have u found any solution, Airtel 4g sim even work with basic phones, but not in Defy. Since Airtel sim is 128k it has more memory than 64k sim, this is the problem and it is not the bug of Rom because slow boot happened in Stock Rom too.
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Click to collapse
Sorry I didn't see your response. I have not yet found any solution. I am not using this device as it is not supporting any new SIMs. Even I will be interested to know if any solution exists. Probably ROM developer should be able to provide solution. Hope to get some ROM developer's attention to get solution.
santekkie said:
Sorry I didn't see your response. I have not yet found any solution. I am not using this device as it is not supporting any new SIMs. Even I will be interested to know if any solution exists. Probably ROM developer should be able to provide solution. Hope to get some ROM developer's attention to get solution.
Click to expand...
Click to collapse
Thank you for the reply, however i bought new phone, defy is in cupboard, probably I use it as FM player, Music player in coming days
I am about to purchase this amazing phone, however I would like to use it in my country on GSM network. I want to know whether this particular model has factory GSM unlock like Verizon version or it needs to be SIM unlocked manually.
Also, if it needs to be unlocked separately, does any method available to do the same?
I looked around on XDA but could not find a clear answer.
Thanks..
honest1212 said:
I am about to purchase this amazing phone, however I would like to use it in my country on GSM network. I want to know whether this particular model has factory GSM unlock like Verizon version or it needs to be SIM unlocked manually.
Also, if it needs to be unlocked separately, does any method available to do the same?
I looked around on XDA but could not find a clear answer.
Thanks..
Click to expand...
Click to collapse
dirty santa unlocks the uicc, flash the us996 rom or a aosp rom and put in your sim.
otherwise using a cdma phone on a gsm network isnt the best ideal and you should by the unlocked international variant to avoid these issues in the first place. Why buy a carrier phone when you arent using on that carrier? Seems like your trying to go a shady route to me..
Team DevDigitel said:
dirty santa unlocks the uicc, flash the us996 rom or a aosp rom and put in your sim.
otherwise using a cdma phone on a gsm network isnt the best ideal and you should by the unlocked international variant to avoid these issues in the first place. Why buy a carrier phone when you arent using on that carrier? Seems like your trying to go a shady route to me..
Click to expand...
Click to collapse
Hello, i was using your magisk rom on sprint network but i decided to flash the deodexed stock version that i downloaded from the dirty santa root method since i also have verizon. The issues with that Rom is that it doesnt read the external sd card and it did not get 4g/LTE. It took me a long time and reading to finally 4g and internet working as well as the hot spot tether by replacing the apn.xml file with one i found online. But is there a way you can share a working kernel that fixes the sd card error issue on this deodexed stock rom? Thank you man you're awesome!
razzrmaxx said:
Hello, i was using your magisk rom on sprint network but i decided to flash the deodexed stock version that i downloaded from the dirty santa root method since i also have verizon. The issues with that Rom is that it doesnt read the external sd card and it did not get 4g/LTE. It took me a long time and reading to finally 4g and internet working as well as the hot spot tether by replacing the apn.xml file with one i found online. But is there a way you can share a working kernel that fixes the sd card error issue on this deodexed stock rom? Thank you man you're awesome!
Click to expand...
Click to collapse
If ur using both. Id suggest trying dualboot patcher to swtich between the 2. You should flash a vzw rom with its matching vzw kernel to get it 100%.
Id try the angry albatross aka warewolf kernel or the konverged kernel as they are the most universal.
The kernels i use are for sprint and wouldnt mesh with the us996 rom. Try a Vs995 rom and see how it acts. Thats where you should be pulling the parts you need.
But sd card shouldnt be a issue on any rom as far as i know. May be a sd card error.
Team DevDigitel said:
If ur using both. Id suggest trying dualboot patcher to swtich between the 2. You should flash a vzw rom with its matching vzw kernel to get it 100%.
Id try the angry albatross aka warewolf kernel or the konverged kernel as they are the most universal.
The kernels i use are for sprint and wouldnt mesh with the us996 rom. Try a Vs995 rom and see how it acts. Thats where you should be pulling the parts you need.
But sd card shouldnt be a issue on any rom as far as i know. May be a sd card error.
Click to expand...
Click to collapse
Dual boot patcher? ? i actually dont want it on sprint lol i have an lg g5 for my sprint account. I just wish i could get sd card reader working and thank you for the advice. I did try the warewolf kernel a few weeks ago before i got the 4g internet to work on this rom but performance sucked so i went back to magisk.
This is what im running on my ls997 currently working on verizon with hot spot enabled.
Put ur sd card into pc. And run the sd repair and put back in
Edit:
Try a Vzw rom fully. Us996 is unlocked rom and is gsm based.. Do VS995 rom.
Team DevDigitel said:
Put ur sd card into pc. And run the sd repair and put back in
Edit:
Try a Vzw rom fully. Us996 is unlocked rom and is gsm based.. Do VS995 rom.
Click to expand...
Click to collapse
My sd card is not corrupted. It reads fine from the file manager on cwm and any other rom. Is that a software for repairing sd cards what you are suggesting? And i am afraid to try any other roms that are not ls997, i dont want to brick or be stock on a firmware that is going to give me more bugs then what i have.
razzrmaxx said:
My sd card is not corrupted. It reads fine from the file manager on cwm and any other rom. Is that a software for repairing sd cards what you are suggesting? And i am afraid to try any other roms that are not ls997, i dont want to brick or be stock on a firmware that is going to give me more bugs then what i have.
Click to expand...
Click to collapse
I would try it lol.. U have twrp backups and ur hust flashing a dif rom.Worst it won't boot but they are on us996 bootloader also. Shouldn't be any diff. May need to find somone with modem backup to get their radios.
Give me a min. Ill go find a vzw rom and flash it on my dualboot lol
You could also flash the rr aosp rom. Its nice. It would be better fit to run a dif carrier also.
Team DevDigitel said:
I would try it lol.. U have twrp backups and ur hust flashing a dif rom.Worst it won't boot but they are on us996 bootloader also. Shouldn't be any diff. May need to find somone with modem backup to get their radios.
Give me a min. Ill go find a vzw rom and flash it on my dualboot lol
You could also flash the rr aosp rom. Its nice. It would be better fit to run a dif carrier also.
Click to expand...
Click to collapse
As far as the picture messaging which is the second issue, Looking on google it sounds like it has to do with the apns-conf.xml file. Someone said they deleted the cbs parts of the file but if i do it and save it. The rest of the apns disappear from apn setting under settings. Here is the info i have on my .xml file
<?xml version="1.0" encoding="utf-8"?>
---------- Post added at 01:59 AM ---------- Previous post was at 01:52 AM ----------
<?xml version="1.0" encoding="utf-8"?>
How did you manage to get 4g on the US996 rom? I am having the same issue with that rom.
@Ablazelemon2 Just several posts below is my short guide - please try it - you should be able to use non Sprint SIM.
Oooo Boost...
Ok. I hope Im posting this in the correct area. Please forgive me if I am not.
I purchased a refurbished LG V20 LS997. It's a Sprint model obviously.
It has a clean esn. Verified through the Sprint portal.
I am trying to get it onto the Boost network.
I previously had my Sprint LG G3 LS990 running flawlessly on Boost.
The V20 should work just as well.
My issue that I keep running into is that the V20 I have still has a SIM number attached to it. However, the device did not come with a SIM card at all.
Sprint WILL NOT free the SIM number from the device in order for me to insert and use a Boost SIM.
When I attempt to swap the device myself I am prompted with an error message about the SIM.
When I call Boost to get this process taken care of, they run into the same error.
Now I am aware that the V20 is not present on the list of accepted sprint devices.
However, there is a Boost mobile variant of the V20 directly through LG.
So I am CERTAIN this will work on the Boost network.
Only thing holding the process back is the SIM that is locked to the device.
Does anyone have any idea what I should do here?
I am lost.
Thank you in advance!
Apple_Saucer said:
Ok. I hope Im posting this in the correct area. Please forgive me if I am not.
I purchased a refurbished LG V20 LS997. It's a Sprint model obviously.
It has a clean esn. Verified through the Sprint portal.
I am trying to get it onto the Boost network.
I previously had my Sprint LG G3 LS990 running flawlessly on Boost.
The V20 should work just as well.
My issue that I keep running into is that the V20 I have still has a SIM number attached to it. However, the device did not come with a SIM card at all.
Sprint WILL NOT free the SIM number from the device in order for me to insert and use a Boost SIM.
When I attempt to swap the device myself I am prompted with an error message about the SIM.
When I call Boost to get this process taken care of, they run into the same error.
Now I am aware that the V20 is not present on the list of accepted sprint devices.
However, there is a Boost mobile variant of the V20 directly through LG.
So I am CERTAIN this will work on the Boost network.
Only thing holding the process back is the SIM that is locked to the device.
Does anyone have any idea what I should do here?
I am lost.
Thank you in advance!
Click to expand...
Click to collapse
Check the software version.. If it is zv5 then you can unlock it from the hidden menu.. What you can do and what is available for you is dependant on the software version... If you are on an older software version do not upgrade to the newest since you will not have root options..
Sent from my [device_name] using XDA-Developers Legacy app
Confirmed Sprint LG V20 LS997 on Boost
ScottieRotten said:
Check the software version.. If it is zv5 then you can unlock it from the hidden menu.. What you can do and what is available for you is dependant on the software version... If you are on an older software version do not upgrade to the newest since you will not have root options..
Click to expand...
Click to collapse
Thank you for replying!
I have the ZVB Software Version on the device.
Aside form that, I got it activated this evening at a local Boost store. It seems as though all that needed to happen was to get a proper SIM card for it. The employee used a "Bring Your Own PHONE SIM Card Activation Kit". It has an orange package vs. the white packaging for the incompatible SIM I had purchased from the other Boost store I had gone to.
The process was rather painless and took only a few minutes to get the phone up and running on the network.
It cost me $30 and a small amount of patients.
This phone is phenomenal and I am very thankful for the employee that got it working for me.
Thank you again ScottieRotten.
If anyone has any questions about getting the Sprint LG V20 LS997 onto the Boost network, feel free to ask me anything and I will gladly help.
Apple_Saucer said:
Thank you for replying!
Aside form that, I got it activated this evening at a local Boost store. It seems as though all that needed to happen was to get a proper SIM card for it. The employee used a "Bring Your Own PHONE SIM Card Activation Kit". It has an orange package vs. the white packaging for the incompatible SIM I had purchased from the other Boost store I had gone to.
Click to expand...
Click to collapse
Interesting. My wife used to be a Boost customer. I bought her a LS997 about a year ago, and I intended to just swap her old phone and stay with Boost. However, Boost insisted that they could not activate the V20 on their network. We therefore ported her number to Twigby, and the V20 has been working great on Twigby ever since. Boost lost a long term customer due to their stupid BYOD restrictions.
Note that this discussion is unrelated to the OP though. Boost and Twigby both operate on the Sprint network, so no SIM unlock is needed for them.
spocko said:
Interesting. My wife used to be a Boost customer. I bought her a LS997 about a year ago, and I intended to just swap her old phone and stay with Boost. However, Boost insisted that they could not activate the V20 on their network. We therefore ported her number to Twigby, and the V20 has been working great on Twigby ever since. Boost lost a long term customer due to their stupid BYOD restrictions.
Note that this discussion is unrelated to the OP though. Boost and Twigby both operate on the Sprint network, so no SIM unlock is needed for them.
Click to expand...
Click to collapse
Yes it was a bit of hoop jump but as long as the proper SIM is used, you can use just about any Sprint phone on Boost. They swore up and down that "it wasn't a compatible device" but I just insisted they try until they did. And it worked!
Thanks!
Team DevDigitel said:
dirty santa unlocks the uicc, flash the us996 rom or a aosp rom and put in your sim.
otherwise using a cdma phone on a gsm network isnt the best ideal and you should by the unlocked international variant to avoid these issues in the first place. Why buy a carrier phone when you arent using on that carrier? Seems like your trying to go a shady route to me..
Click to expand...
Click to collapse
didnt work for me :crying:
did the dirty santa, flashed the rom but still my network isnt coming on
Team DevDigitel said:
If ur using both. Id suggest trying dualboot patcher to swtich between the 2. You should flash a vzw rom with its matching vzw kernel to get it 100%.
Id try the angry albatross aka warewolf kernel or the konverged kernel as they are the most universal.
The kernels i use are for sprint and wouldnt mesh with the us996 rom. Try a Vs995 rom and see how it acts. Thats where you should be pulling the parts you need.
But sd card shouldnt be a issue on any rom as far as i know. May be a sd card error.
Click to expand...
Click to collapse
I've read allot in here and it's been years since I've done any of this so I'm basically stating new again. You are the one user here that seems the most knowledgeable.Would you mind helping me out? I'd really appreciate it!
hey there.
so short version.
i got a sprint s7, apparently it was not carrier unlocked when i got it. sprint says they will only unlock it if it's on an active service in good standing which i dont plan on getting on sprint at all. so i need a trusted place to get the unlock codes for it please, the cheaper the better because of my situation.
longer version.
my dad has early onset dementia so we had to take his phone from him and close his account. it's been a while and i found his S7 sitting there not doing anything and i need a new phone to put on my Verizon prepaid plan so after looking on the s7 the hardware is all the same just the firmware blocks out whichever bands each carrier chooses. so i need to go tomorrow and get one of Verizon sims to be ready so when i get the unlock code i can put it in right away and make sure i dont receive that sim error. or do i need to flash to the verizion firmware before i try to carrier unlock it?
any and all help is really appreciated as our family is really struggling atm and not having to purchase a new phone would save us alot of money.
p.s. device info is sm-g930p
baseband g930pvps4bqc1
android version 7
Here's a link to the remote unlocking service I used to have my 930P unlocked: https://www.gsmzambia.com/product/samsung-sprint/
You'll have to install Teamviewer and let them remotely control your PC to perform the unlock. I found them to be very reputable and helpful before, during and after the sale.
After unlocking, I'd recommend using Odin (https://www.androidfilehost.com/?fid=24591023225177749) to flash the "U" firmware: http://updato.com/firmware-archive-select-model?record=52EF42AE925C11E7963AFA163EE8F90B
With U firmware, you won't have any of the Sprint bloatware that came preloaded on the phone, and it'll automatically detect and apply the proper settings for whichever SIM card you insert. If you don't want to flash alternate firmware, you can stick with what's already on the phone; you'll just have to manually enter the Verizon APN settings.
I bought this supposedly T-Mobile H918 on ebay. It says it works with T-mobile, Lycamobile, UltraMobile, Simplemobile. I figured (assumed (mistake)) the phone was unlocked. Tried to use a Freedompop gsm sim, no go. Went over to T-mobile they said it was NOT in database, couldn't unlock a phone not in database.but rep put his Tmobile sim in and it worked. I decided to order a T-mobile sim online for $10. In the meantime I went online looking for a LG IMEI checker. It turns out the phone is an Israeli H990. I guess someone flashed the T-mobile H918 on it. The IMEi is clear according to swappa and others. Should I send it back? It had H918 10K on it and I flashed back to 10J and rooted. I like the phone, but is it possible that it could get blocked down the line? If it's clear and can be used on different T-mobile MVNOs is it unlocked? I plugged IMEI into AT&T checker and it said something like, it's clear, we just need to get the right sim. Any help or info or ideas appreciated, Thanks Johnm
jmacie said:
I bought this supposedly T-Mobile H918 on ebay. It says it works with T-mobile, Lycamobile, UltraMobile, Simplemobile. I figured (assumed (mistake)) the phone was unlocked. Tried to use a Freedompop gsm sim, no go. Went over to T-mobile they said it was NOT in database, couldn't unlock a phone not in database.but rep put his Tmobile sim in and it worked. I decided to order a T-mobile sim online for $10. In the meantime I went online looking for a LG IMEI checker. It turns out the phone is an Israeli H990. I guess someone flashed the T-mobile H918 on it. The IMEi is clear according to swappa and others. Should I send it back? It had H918 10K on it and I flashed back to 10J and rooted. I like the phone, but is it possible that it could get blocked down the line? If it's clear and can be used on different T-mobile MVNOs is it unlocked? I plugged IMEI into AT&T checker and it said something like, it's clear, we just need to get the right sim. Any help or info or ideas appreciated, Thanks Johnm
Click to expand...
Click to collapse
If you were able to root it, then its probably a database mismatch. The gsm simcards usually pose problem to T-Mobile's android handsets due to UICC activation (or UICC unlocking).
A crossflashed phone is hardbricked the moment u unlock its bootloader and load a custom recovery on it. (Had my chinese fake G3/G2 moments back in the days). Your phone is fine if you rooted it and its working right out of the box.
Two things that dont work if u modify the system of LG phones is RIL and the abnormal screen behavior. For your case, both work. I'm from Pakistan but I often end up having unlocked phones from American carriers. Right now I have Samsung Tab A which is from T-Mobile and UICC activation doesnt make my LTE Sim work on it. With T-Mobile its kinda common to end up into an "invalid sim card" error when u try to use a non-T variant.
dark_prince said:
If you were able to root it, then its probably a database mismatch. The gsm simcards usually pose problem to T-Mobile's android handsets due to UICC activation (or UICC unlocking).
A crossflashed phone is hardbricked the moment u unlock its bootloader and load a custom recovery on it. (Had my chinese fake G3/G2 moments back in the days). Your phone is fine if you rooted it and its working right out of the box.
Two things that dont work if u modify the system of LG phones is RIL and the abnormal screen behavior. For your case, both work. I'm from Pakistan but I often end up having unlocked phones from American carriers. Right now I have Samsung Tab A which is from T-Mobile and UICC activation doesnt make my LTE Sim work on it. With T-Mobile its kinda common to end up into an "invalid sim card" error when u try to use a non-T variant.
Click to expand...
Click to collapse
Wow Thanks, this story is getting more interesting. I appreciate you relating your crossflashing experience. I guess I'll try to get some different gsm sims to try. Thanks, take care, johnm