[Q] How to unlock Galaxy S4 SCH-R70 US Cellular - Galaxy S 4 Q&A, Help & Troubleshooting

How to unlock the Samsung Galaxy S4 SCH-R970
I bough this phone online thinking that i will unlock and keep using on different carriers even outside the US (GSM)
I have done a lot of researches online and i cannot find any solution. The imei is only 14 Digits and almost all online unlocking services doesn't have this model.
The usually codes like *#0011#, *#27663368378# they doesn't work at all.
I have tried to go to unlock stores or guys who knows to unlock phones and he said that this phone cannot be unlocked.
phone has a sim card slot so it should be CDMA&GSM
When i insert a different sim card provider it says Invalid Sim Card so i cannot enter any unlock code
ANY IDEA or i will lose 500$ for bad phone

Uscc is not a gsm phone the sim card slot is used for thw 4g service the phone itself is cdma
Sent from my SCH-R970 using XDA Premium 4 mobile app

jtjames003 said:
Uscc is not a gsm phone the sim card slot is used for thw 4g service the phone itself is cdma
Sent from my SCH-R970 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
??
Anyone know if its possible to unlock?

cynthiadx said:
??
Anyone know if its possible to unlock?
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Click to collapse
did you find a solution? i have th same problem but my phone is s3

jtjames003 said:
Uscc is not a gsm phone the sim card slot is used for thw 4g service the phone itself is cdma
Sent from my SCH-R970 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
you are wrong..when samsung fixed/made the phone give the phone all the feuatures..like thisphone can bee gsm and cdma phone..but uscc lock the gsm and they only want to use cdma..i contact samsung and they told me..all s4 models in every counrtys are same..but uscc lock the gsm network..now we have to 'brake' their lock or give us the unlock code..thatt all.. i also have the same promble..no solution yet..

SkilleR039 said:
How to unlock the Samsung Galaxy S4 SCH-R970
I bough this phone online thinking that i will unlock and keep using on different carriers even outside the US (GSM)
I have done a lot of researches online and i cannot find any solution. The imei is only 14 Digits and almost all online unlocking services doesn't have this model.
The usually codes like *#0011#, *#27663368378# they doesn't work at all.
I have tried to go to unlock stores or guys who knows to unlock phones and he said that this phone cannot be unlocked.
phone has a sim card slot so it should be CDMA&GSM
When i insert a different sim card provider it says Invalid Sim Card so i cannot enter any unlock code
ANY IDEA or i will lose 500$ for bad phone
Click to expand...
Click to collapse
Check this ##366633# the first code in dial app that works..even imei code dont work this code is going in one dm mode any ideas what is this?

Samsung gs4 sch-970c (cricket)
Samsung has told me this phone will work either gsm or cdma. Cdma is the way cricket first sold it. It cannot be unlocked. It is cdma. It has to be flashed to a new carrier after it is rooted. The sim is locked via software. Not many codes and all the unlock codes you read about are for gsm. The ##366633# code you mention gets you to a disable or enable developer mode.

i also have the same issue. Not resolved yet. but I did find out this that might help: if i pull up a website that checks the MEID number it gives me the whole description of my phone plus an extra digit on the IMEI number. I wonder if this is why third party unlock sites cant help me

Who has unlocked cricket sch-r970c?
Same problem. Cricket said they cannot find the unlock code if the phone was never activated. So this was never activated.
I have rooted it to OptimizedCM-12-1-20151130. Is it now unlocked?
OR, who has successfully flashed a custom ROM to unlock the software lock on it?

The struggle continues...
I just repaired my USC s4 LCD digitizer and now that I am no longer a USC customer wanted to unlock it so I did some checking, if you go to US cellular they will unlock the phone for you, I got my unlock code, but they said they couldn't complete the process if the phone was rooted (Which mine is), you would have to reinstall the USC original firmware, or the latest firmware, to get it to unlock, then root it. I am doing some research now to find out if there is indeed an alternative to unlock a rooted phone...

I just left US CELLULAR where I was told nothing below the s5 could be unlocked,and the only suggestion from any one employed there was to call customer service.

you try RegionLockapp ???
I unlocked my t mobile s4 with it, i had to flash to a earlier firmware, then root, then use RegionLockapp, then re-flash whatever rom you want.

Related

Galaxy S4 SGH-I337 AT&T Online Unlock Code does not work, Help!

Hi,
I have Samsung Galaxy S4 AT&T version, bought unlock code from http://myunlockedphone.com/ It said unlock successful, but does not work.
I tried Simple Mobile Sim Card and only emergency calls. What can be wrong with it? Also I could not do free unlock as there is not UMTS in Service Mode.
paata01 said:
Hi,
I have Samsung Galaxy S4 AT&T version, bought unlock code from http://myunlockedphone.com/ It said unlock successful, but does not work.
I tried Simple Mobile Sim Card and only emergency calls. What can be wrong with it? Also I could not do free unlock as there is not UMTS in Service Mode.
Click to expand...
Click to collapse
If said successful the the phone is unlocked,and the problem is with the sim,verify with a tmobile sim to see if works

SIM Unlock for International GSM/WCDMA [SM-G900P]

Help! How Unlock SM-G900P? Tried http://forum.xda-developers.com/showthread.php?t=2415587, not working! Phone not asks codes! Currently the phone says "Invalid SIM Card" Is it possible to unlock it?
same here, did you unlock your phone?
EvgeniyZ3 said:
Help! How Unlock SM-G900P? Tried http://forum.xda-developers.com/showthread.php?t=2415587, not working! Phone not asks codes! Currently the phone says "Invalid SIM Card" Is it possible to unlock it?
Click to expand...
Click to collapse
Correct me if I'm mistaken, but that's the Sprint version. That version cannot be GSM unlocked (As far as I know...), so you'll have to use it on CDMA in the mean time.
Sent from my SM-G900M using XDA Free mobile app
I just created a bounty thread for SIM unlock Sprint Galaxy S5(SM-G900P). Support it, if you are interested. That might help things to get little speed up.
http://forum.xda-developers.com/sprint-galaxy-s5/general/sprint-sm-g900p-gsm-international-sim-t2832927
@aalyatim found a solution for international unlock of the Sprint galaxy S5 (g900p).
He says that this method will work for other Sprint models also. (Mega, Note 3, L720T)
Depend on the bounty amount, he will release the solution...
Here is the SM-G900P bounty thread.
http://forum.xda-developers.com/show...&postcount=767
So Please post the amounts you like to pledge......

[Q] Weird problem with unlocked S4 LTE

Hi! first poster here.
I've just got this phone wich was recently unlocked from TELCEL MEX carrier. The weird thing here is that the phone work flawlessly with any domestic carrier sim cards, but not with my US T-Mobile sim card.
I've test this T-mobile sim card with other unlocked phones (Galaxy S4 i9500 and Alcatel Pop) here in México without problem, but in the S4 above mentioned asks for sim unlock code.
The cell phone is SGH-I337M with KitKat 4.4.2. and firmware CSC code TCE
Thank you very much in advance!
This may be relevant or not.
My previous phone was an HTC Desire S on O2UK.
O2UK give you a free unlock on all contract phones after 6 months and send a code by email to you.
Any time I tried changing sims to a different carrier it asked for the unlock code, except when it was Tesco Mobile UK.
It may be that the original carrier requires you to input the unlock code for anything other than certain providers.
I tried to get an unlock code for my I9505 LTE but they said it was factory unlocked so can't speak about the phone specifically but with the Desire S, also on O2UK, had a similar issue.
I've got the pin code
Thanks for your input, sure it's relevant.
I have the unlock code for the T-mobile sim card, but of course it's not recognized by the phone (or sim card?)
In the other phones tested the process was straight forward, just inserted sim, boot up and voilá.
Went to the Telcel's service center but the person there confirmed that it's unlocked.
I'ven reading about a "Regional Lock" of some Samsung devices, but i realy can tell if this the case.
Anybody else having this kind of issue?
Region locking I don't believe has anything to do with this. When the phone was unlocked, the region locking should also have been removed.

Galaxy S8 US Cellular

Hi .
I have bought a S8 locked to US Cellular on eBay, clean , not blacklisted and when I try a SIM card from my operator does not ask for unlock pin code and remains without registering on my network.
Does anyone know any website or any method to unlock It?
Many thanks in advance.
qryche said:
Hi .
I have bought a S8 locked to US Cellular on eBay, clean , not blacklisted and when I try a SIM card from my operator does not ask for unlock pin code and remains without registering on my network.
Does anyone know any website or any method to unlock It?
Many thanks in advance.
Click to expand...
Click to collapse
Does it have a unlock app in apps drawer or in settings. It may be unlocked. If ure sim works. WhT carrier you on.
Thanks for your answer.
I live in Portugal and I tried 2 different SIM cards. The phone shows in upper left screen the message "SIM blocked". I searched for an unlock app too but I can't find any like in T-Mobile phones I bought in the past.
US Cellular is a CDMA network provider whereas in Portugal you probably have only GSM networks.
I think you should look into this and investigate this issues as well.
Another info: I flashed with Odin with the latest USC official Rom from sammobile. Can be this the cause?
This is 950U version and therefore has the GSM frequencies as well.
Even if it was only cdma it would prompt to insert the network unlock code....
Any help?
WHen I put a sim card it appears a forbidden sign on the top, where I should see the network signal...
https://www.youtube.com/watch?v=yysQbPLf8l0&feature=youtu.be

Unlockboot expensive, but do you recommend?

Hi,
I found that "unlockboot" can help me to unlock my S10+ SMG-G975U, that previusly UnlockUnit identify my device as Unavailable - CDMA and something like that topic.
Do you recommend unlockboot to unlock by 99USD?
Thank in advance!
Are you wanting to carrier unlock it or bootloader unlock it? The phone is already carrier unlocked, just insert your SIM. The bootloader cannot be unlocked on the G975U.
StoneyJSG said:
Are you wanting to carrier unlock it or bootloader unlock it? The phone is already carrier unlocked, just insert your SIM. The bootloader cannot be unlocked on the G975U.
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Click to collapse
Hi,
No, there is a message that said "Sorry, your device can´t be activated on another carrier's..."
What carrier are you on? If you flash the U1 unlocked firmware and insert a SIM, it should work. If you don't want to flash then it looks like you need an unlock code, which is odd because from what I have read the G975U is already carrier unlocked.
StoneyJSG said:
What carrier are you on? If you flash the U1 unlocked firmware and insert a SIM, it should work. If you don't want to flash then it looks like you need an unlock code, which is odd because from what I have read the G975U is already carrier unlocked.
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Click to collapse
Thanks, I will try to flash U1 fw. The cellphone is Verizon, and I am looking to move to Movistar (Telefonica) of Mexico.
StoneyJSG said:
What carrier are you on? If you flash the U1 unlocked firmware and insert a SIM, it should work. If you don't want to flash then it looks like you need an unlock code, which is odd because from what I have read the G975U is already carrier unlocked.
Click to expand...
Click to collapse
Wait wait. So you're saying my Sprint S10+ is already unlocked? Just need to flash the U1 software?
If you purchased a carrier branded model new it doesn't normally come unlocked. You need to own the phone outright before a carrier will unlock it and some carriers require that the phone be used on their network for a minimum period of time (usually 1 or 2 months) even if you did purchase it outright from them.
You cannot flash U1 firmware on an S10+ unless it's carrier unlocked.
Hello,
I flashed this one: https://forum.xda-developers.com/s10-plus/how-to/sm-g975u-firmware-downloads-tmo-spr-att-t3908657. Everything goes ok, and the message of unlocking appears, requesting me the unlock code.
Any suggestion?
Thank you!
jhs39 said:
If you purchased a carrier branded model new it doesn't normally come unlocked. You need to own the phone outright before a carrier will unlock it and some carriers require that the phone be used on their network for a minimum period of time (usually 1 or 2 months) even if you did purchase it outright from them.
You cannot flash U1 firmware on an S10+ unless it's carrier unlocked.
Click to expand...
Click to collapse
Actually you can flash U1 firmware anyway, but it will still be locked to the same carrier without the unlock code. Carrier locking is IMEI based, not software or device based.
Sent from my SM-G975U1 using XDA Labs
Have you tried calling the carrier and asking them to unlock it? Most carriers will unlock your phone once you've had it for 3 months.
Psedog said:
Have you tried calling the carrier and asking them to unlock it? Most carriers will unlock your phone once you've had it for 3 months.
Click to expand...
Click to collapse
I cannot get contact with agent support, I need to have a Verizon number get into the call
jwarrior319 said:
Actually you can flash U1 firmware anyway, but it will still be locked to the same carrier without the unlock code. Carrier locking is IMEI based, not software or device based.
Click to expand...
Click to collapse
Recently the firmware for the S10+ became all-inclusive like on the S9 models so I'm not sure if flashing U1 firmware over carrier firmware will get rid of the carrier apps anymore. They seem to get installed now automatically as part of the provisioning for the installed SIM card. If you have a network unlocked Verizon phone and insert a T-mobile SIM you end up with the T-mobile boot animation and T-mobile apps and all the Verizon stuff is gone. Maybe the U1 firmware doesn't work the same way.
I read in a different thread that you have to activate the phone with Verizon and wait 3 days. After that just put in another carrier SIM and the phone should auto unlock.
jhs39 said:
If you purchased a carrier branded model new it doesn't normally come unlocked. You need to own the phone outright before a carrier will unlock it and some carriers require that the phone be used on their network for a minimum period of time (usually 1 or 2 months) even if you did purchase it outright from them.
You cannot flash U1 firmware on an S10+ unless it's carrier unlocked.
Click to expand...
Click to collapse
this is incomplete and some is inaccurate..
his vzw device doesnt need to be paid off but does need to wait 60 days from activating on the verizon network before they unlock it..
also you can absolutely flash u1 firmware on a u device, it has literally nothing to do with the sim lock.. and no, flashing u1 on u doesnt magically unlock the sim..
pretty sure on U firmware vzw device will say message cannot be used on another carrier yet.. on u1 will i believe prompt for unlock code when a dif. carrier sim is inserted
https://www.verizon.com/about/consumer-safety/device-unlocking-policy
sprint however needs to be fully paid off and active at least 50 days and account needs to be in good standing to be eligible for sim unlock
StoneyJSG said:
I read in a different thread that you have to activate the phone with Verizon and wait 3 days. After that just put in another carrier SIM and the phone should auto unlock.
Click to expand...
Click to collapse
its a 60 day period, not 3 days lmao
hackerjj22 said:
Hi,
I found that "unlockboot" can help me to unlock my S10+ SMG-G975U, that previusly UnlockUnit identify my device as Unavailable - CDMA and something like that topic.
Do you recommend unlockboot to unlock by 99USD?
Thank in advance!
Click to expand...
Click to collapse
are you trying to unlock the Sim or the bootloader? i have the same phone and was disappointed to find out i couldn't unlock my bootloader. no root no custom rom smh. but it's because Samsung removed the developer option to "oem unlock" which must be enabled to unlock. so done online service claiming to be able to do so is crap and waste of money. also if you're trying to unlock the Sim which I think that's what the site is claiming to be able to do because Sprint is a CDMA network if you unlock the SIM the only other service you can put it onto would be boost or Virgin Mobile which just use Sprint's towers. they're the only network still using CDMA. so pointless all the way around sorry buddy.
kw69747 said:
are you trying to unlock the Sim or the bootloader? i have the same phone and was disappointed to find out i couldn't unlock my bootloader. no root no custom rom smh. but it's because Samsung removed the developer option to "oem unlock" which must be enabled to unlock. so done online service claiming to be able to do so is crap and waste of money. also if you're trying to unlock the Sim which I think that's what the site is claiming to be able to do because Sprint is a CDMA network if you unlock the SIM the only other service you can put it onto would be boost or Virgin Mobile which just use Sprint's towers. they're the only network still using CDMA. so pointless all the way around sorry buddy.
Click to expand...
Click to collapse
Thanks for your reply!
I am trying to unlock the sim, the cellphone was Verizon US, (refurbished by asurion). And wanted to use Movistar (Telefonica, from Mexico just GSM). I am searching to do a root and try to follow this guide: https://forum.xda-developers.com/showthread.php?t=1693491. So what I understand, the site "Unlockboot" could do a CDMA unlock, and after 3 days of chatting with the person that is on service there, sounds that are possible, also is possible that I can continue using my GSM provider of Mexico. But it is very expensive 99$ USD is 2000$ MXN... Also, I do not trust a web service, also if there isn't a reference on this forum.
So that's the update...
kw69747 said:
are you trying to unlock the Sim or the bootloader? i have the same phone and was disappointed to find out i couldn't unlock my bootloader. no root no custom rom smh. but it's because Samsung removed the developer option to "oem unlock" which must be enabled to unlock. so done online service claiming to be able to do so is crap and waste of money. also if you're trying to unlock the Sim which I think that's what the site is claiming to be able to do because Sprint is a CDMA network if you unlock the SIM the only other service you can put it onto would be boost or Virgin Mobile which just use Sprint's towers. they're the only network still using CDMA. so pointless all the way around sorry buddy.
Click to expand...
Click to collapse
you are wrong.. U variants will work on all us carriers once sim unlocked.. its been this way a few years now..
also, i can get oem unlock but youre still not missing anything because bl unlock doesnt work still lol
I think ibowtoandroid who maintains multiple Samsung device threads on XDA has an unlock service but I'm not sure what he charges.
---------- Post added at 01:36 AM ---------- Previous post was at 01:27 AM ----------
Where I live there are multiple independent phone shops that sell SIM cards and phones and are not affiliated with a single carrier and also phone repair shops that offer to SIM unlock a phone as a walk in service. You can probably find a shop to do it if you don't trust an online service.
jhs39 said:
I think ibowtoandroid who maintains multiple Samsung device threads on XDA has an unlock service but I'm not sure what he charges.
---------- Post added at 01:36 AM ---------- Previous post was at 01:27 AM ----------
Where I live there are multiple independent phone shops that sell SIM cards and phones and are not affiliated with a single carrier and also phone repair shops that offer to SIM unlock a phone as a walk in service. You can probably find a shop to do it if you don't trust an online service.
Click to expand...
Click to collapse
Let me contact him, thanks!

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