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Unlock Samsung S4 i337 without SIM

Hello guys,
newbie here, just got the s4... The S4 is locked to AT&T and i am on ROGERS (canada) however I do not have the AT&T sim, what is the procedure i need to follow to unlock this phone. Do i need to purchase a unlock code or is there a free method available?
Thanks guy
I switched over from a blackberry z10, that phone was like a iphone3 compared to this s4

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Questions and Help issues go in Q&A and Help section
Thread moved
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Friendly Neighborhood Moderator
Also this is not the I337 section. I will move you to the correct device as well

If you put a att sim card it will just work so no need for unlocking, but if you put a Rogers sim card then the the phone will ask for a unlock code
Sent from my Ssamsung Galaxy s4

beginner09 said:
Hello guys,
newbie here, just got the s4... The S4 is locked to AT&T and i am on ROGERS (canada) however I do not have the AT&T sim, what is the procedure i need to follow to unlock this phone. Do i need to purchase a unlock code or is there a free method available?
Thanks guy
I switched over from a blackberry z10, that phone was like a iphone3 compared to this s4
Click to expand...
Click to collapse
You could try this unlock method posted earlier.
http://forum.xda-developers.com/showthread.php?p=41585780

I need help to unlock sim carrier on i337M
Hey maybe you could help. I tried everything. I downlaod the Odin, CF file and root the phone. also try to figure out and unlock my samsung S4, but it still locked and ask for code. I also got the REgionLock away app and it does'nt work. Well it does but at the end my phone still locked by the carrier : BELL Mobility
My mom gave me this phone as a gift and I want to use it with my actual carrier ''FIDO''... I do not want to paid 50$ for that..
Is there any way that i could get a code or unlock the pĥone?

What rom is on the bell phone? Did you downgrade the modem before running regionlockaway?

what is a rom?
What do you mean by rom and downgrading the phone? I got the lollipop version 5. 1. 0.
Model SGH i337m. I tried most everthing including dialing codes (*#0011* follow step by step).. but its not working. Each time i put the sim card from my carrier (Fido) it asked for a code to unlock the phone. Im not an expert in that kind of stuff either but i tried to get my phone unlock whithout paying if i can. Could you helped me? Did you need my IEMI number?

http://forum.xda-developers.com/showpost.php?p=66051022&postcount=726

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

[Q] How to unlock Galaxy S4 SCH-R70 US Cellular

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?
Click to expand...
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.

[Q] replace ATT S5 with T-Mobile

I think I can get a T-Mobile S5 and a SIM unlock and use it on AT&Ts network. Is this correct? I really want an unlocked bootloader and the abilty to run non touchwiz roms. Also, is it possible to create a hybrid kernel gto support AOSP roms under touchwiz. Never mind, locked boot loader can't change the kernel anyway, can I?
The other option may be the verizon dev edition phone. Is it possible to unlock it for ATT Network use? I'm a developer myself but just into android and cell phones in general, and I do not yet know what parts fit togrther

dposea123 said:
I think I can get a T-Mobile S5 and a SIM unlock and use it on AT&Ts network. Is this correct? I really want an unlocked bootloader and the abilty to run non touchwiz roms. Also, is it possible to create a hybrid kernel gto support AOSP roms under touchwiz. Never mind, locked boot loader can't change the kernel anyway, can I?
The other option may be the verizon dev edition phone. Is it possible to unlock it for ATT Network use? I'm a developer myself but just into android and cell phones in general, and I do not yet know what parts fit togrther
Click to expand...
Click to collapse
The T-Mobile S5 is capable of being unlocked and used on at&t's network.

I use a T-Mobile variant on AT&T and love it.
All the required bands, excellent speeds and plenty of ROM options.

Unlock G900A
seanpr123 said:
I use a T-Mobile variant on AT&T and love it.
All the required bands, excellent speeds and plenty of ROM options.
Click to expand...
Click to collapse
I have an ATT SM-G900A S5 that is locked. I have the unlock code but don't know how to enter it. I have an old T-Mobile Sim but it is deactivated so it wont trigger the unlock fields. is there a code( *#xxx#) I can use to allow me to enter the unlock code?
Do I have to find an active T-Mobile sim?
Thanks for the advise. I just got this S5 and can do all but use it as a hot spot! ugh HELP!

MWTTRON said:
I have an ATT SM-G900A S5 that is locked. I have the unlock code but don't know how to enter it. I have an old T-Mobile Sim but it is deactivated so it wont trigger the unlock fields. is there a code( *#xxx#) I can use to allow me to enter the unlock code?
Do I have to find an active T-Mobile sim?
Thanks for the advise. I just got this S5 and can do all but use it as a hot spot! ugh HELP!
Click to expand...
Click to collapse
First of all don't just randomly post in other peoples threads. Do you have a question? Thoroughly use the site's search function and search google. If, and only if, you haven't found your answer you start your own thread (not just randomly post in other peoples threads).
As far as I know you need a working sim card of another operator. I'm sure you can order them for free online.
Don't post in this thread no more. Make your own instead.
Here is a really good start for you. Good luck. :good:

[Q] Sprint Galaxy s5 Unlock Help

Hello, I am rather new here. I am trying to sim unlock m Galaxy S5 (sprint) that I bought on craigslist. I have the unlock code from Sprint and a Tmobile sim card but when I insert the tmobile sim it doesn't ask for the unlock code, instead just displaying "invalid sim". This is an unmodified phone, not rooted or anything, a stock SM-G900P. Thank you for your help.

ColdFlare said:
Hello, I am rather new here. I am trying to sim unlock m Galaxy S5 (sprint) that I bought on craigslist. I have the unlock code from Sprint and a Tmobile sim card but when I insert the tmobile sim it doesn't ask for the unlock code, instead just displaying "invalid sim". This is an unmodified phone, not rooted or anything, a stock SM-G900P. Thank you for your help.
Click to expand...
Click to collapse
Common scam from Sprint customer service... they gave you the SPC code for that device. it does not SIM unlock your device. To unlock your device, install the Sprint Samsung Unlocker APK. This will allow your unit to work overseas only, not in the USA. SSU.apk link?
http://forum.xda-developers.com/spr...print-samsung-unlocker-unlock-sprint-t2928250