Unlock question for my At&T S3? - AT&T, Rogers, Bell, Telus Samsung Galaxy S III

I've had my S3 about 5 months, I bought it retail from ebay from a seller that didn't unlock it, it is still tied to AT&T. I use Straight Talk as my service as at&t or T-moblie will work with out unlocking them. I want to unlock my phone now and have a question.
Beings that the micro sim in my phone is straight talk and is working, how do I unlock my phone? from what I've read about unlocking, you need to have a NON-WORKING sim to be able to unlock it. Or is there a way to unlock it with out a sim in it?
thanks for your time.

You actually need a Sim that is not att, to unlock. You will need the unlock code from att or you can buy them on the internet. I was able to get my unlock code for my S2 from att. You have to have the phone on their service for at least 6 months, you call them say you are going out of the county for a few weeks, and bam!, they give you the unlock code.
Once you have the code, you need to put in an activated sim from another provider other than att, when you turn the phone on you'll be asked to enter unlock code. Enter the code, hit enter, bam unlocked.
This won't work with a sim that is not active.
So if you have a straight talk sim in, and have for six months, and its working, and its a i747, then I think you have a unlocked phone.
Sent from my SAMSUNG-SGH-I747 using xda premium

just to clarify, you do NOT have to have AT&T for any given amount of time before you receive an unlock code.
i was an AT&T customer for all of 10 days and got my unlock code for my Galaxy S3. it is VERY dependent on the agent you speak to for asking for an unlock code.
anyways, since you are using Straight Talk, you should have an unlocked phone. best way to test is try to put a different SIM card in it and see what happens.

I was told my device was "ineligible" to be unlocked. AT&T sucks.
If you don't want to waste time talking to a rep that may or may not help you, use this method, it's easy and free: http://forum.xda-developers.com/showthread.php?t=2014982 (it's for the Note II but it works on the AT&T S3). You don't need a non-working sim for this method to work, but you won't know if it worked until you put in a non-working sim.
Also, you'll likely only get Edge network on T-Mobile unless you happen to be one of the lucky few in an areas where you can get 3G or H+.
But as posted in other threads, if you're going to call AT&T, call their International Support line: 1-800-335-4685 (found here: http://forum.xda-developers.com/showthread.php?t=1962453&page=16 )

skrambled said:
I was told my device was "ineligible" to be unlocked. AT&T sucks.
If you don't want to waste time talking to a rep that may or may not help you, use this method, it's easy and free: http://forum.xda-developers.com/showthread.php?t=2014982 (it's for the Note II but it works on the AT&T S3). You don't need a non-working sim for this method to work, but you won't know if it worked until you put in a non-working sim.
Also, you'll likely only get Edge network on T-Mobile unless you happen to be one of the lucky few in an areas where you can get 3G or H+.
But as posted in other threads, if you're going to call AT&T, call their International Support line: 1-800-335-4685 (found here: http://forum.xda-developers.com/showthread.php?t=1962453&page=16 )
Click to expand...
Click to collapse
Thanks for all the great info, I'll give these a try.

Related

Unlocked - How can you tell?

Is there a way to tell if my phone is network unlocked? I put in an ATT sim and my phone booted up normal, didn't ask for the unlock code and says no service. I know the sim ( iPhone 4 ) was shut off a month ago. It's rooted, FreeGS3 6, adama Kernal.
If it is unlocked it will get service.
Sent from my SGH-T999
If it's still locked then why doesn't it ask for an unlock code? Is there a way to force it or check it or?
I just had a conversation with TMO support chat. They tell me that the SIM card has to be active or it will not ask for the unlock code. I see people selling inactive ATT SIMs for unlocking TMO phones all over fleebay. TMO said I can use any active SIM but reading on the forum, people say you can't use a Verizon SIM.....
Anyone know what the facts are to unlock this 3S?

unlocking sim for sm-p607t (T-Mobile) ??

I was wondering if anyone gotten their tablet unlocked and can help me out on how or where I can get mine to unlock
Thank You in advance
Nearly two years ago I paid $30 to CellUnlocker.net to unlock my P607T. It maybe be cheaper now, but they worked for me.
Try UnlockRadar.com, they have a -20% offer and it will cost you something around 20$.
https://www.unlockradar.com/unlock-samsung/galaxy-note-10-1-2014-edition
Has anyone tried to get the SIM network unlock code for free from T-Mobile?
I have had good results from them in the past, but I just saw this KB article: https://support.t-mobile.com/docs/DOC-14910
One of T-Mobile's requirements (in addition to account in good standing, device not on payment plan, no more than 2 unlocks per year) require that the device be active on the account for at least 40 days, so I'll need to wait before I try. I'm happy to wait a month to save $20, unless someone tells me it's never going to happen, in which case I'll buy from a third-party now.
Unlocking Note 10.1 (2014 T Mobile
DA6030 said:
Has anyone tried to get the SIM network unlock code for free from T-Mobile?
I have had good results from them in the past, but I just saw this KB article: https://support.t-mobile.com/docs/DOC-14910
One of T-Mobile's requirements (in addition to account in good standing, device not on payment plan, no more than 2 unlocks per year) require that the device be active on the account for at least 40 days, so I'll need to wait before I try. I'm happy to wait a month to save $20, unless someone tells me it's never going to happen, in which case I'll buy from a third-party now.
Click to expand...
Click to collapse
I purchased my T-Mobile Note 10.1 (2014 Edition from Amazon. I threw in an AT&T sim and simply searched for the correct network. No unlocking required..
Ron
ronr9286t said:
I purchased my T-Mobile Note 10.1 (2014 Edition from Amazon. I threw in an AT&T sim and simply searched for the correct network. No unlocking required..
Ron
Click to expand...
Click to collapse
Oh wow, interesting! Are you sure you have a P607T, not a P605? I just threw in an active Verizon SIM and definitely had my boot interrupted with a "SIM network unlock PIN" prompt.
Unlocking SM-P607T
DA6030 said:
Oh wow, interesting! Are you sure you have a P607T, not a P605? I just threw in an active Verizon SIM and definitely had my boot interrupted with a "SIM network unlock PIN" prompt.
Click to expand...
Click to collapse
Yep, just pulled out the best and that is the model. I'm on Android 5.1. Went into Connections, More Networks, Mobile Networks, Checked Mobile Networks and Data Roaming, Opened Network Operators, Select Automatically (Automatically Select Preferred Network), and Default Setup.
Maybe it only works with an AT&T SIM???
Ron
DA6030 said:
Has anyone tried to get the SIM network unlock code for free from T-Mobile?
I have had good results from them in the past, but I just saw this KB article: https://support.t-mobile.com/docs/DOC-14910
One of T-Mobile's requirements (in addition to account in good standing, device not on payment plan, no more than 2 unlocks per year) require that the device be active on the account for at least 40 days, so I'll need to wait before I try. I'm happy to wait a month to save $20, unless someone tells me it's never going to happen, in which case I'll buy from a third-party now.
Click to expand...
Click to collapse
I just tried unlocking tonight, the online representative said it wasn't a T-Mobile device and contact Samsung to figure out "who originally manufactured my tablet." This despite the fact I have to deal with the stupid t-mobile jingle every time it starts up.
As far as I know the Tmobile variant doesn't come locked. Verizon isn't a true GSM network, they use the SIM for 4G LTE.
I've spoken to Tmobile many times and they say none of their tablet comes locked but who knows. Try an AT&T sim... if it let's you use it it means it's unlocked. There is no such thing as selective network lock. It's either locked or it's unlocked.
T-Mobile USA definitely SIM-locks subsidized devices (but you can unlock once paid off, or pay someone to do it). My P607t and my Tab S2 (817t) came SIM-locked.
p607t unlock
i havep607t tmobile i unlock sim card in cellunlocker.com its working but no wifi and bluetooth my friends told me that must root it to get full option he did but after that its locked again give me massege this is unauthrized software so sim card unlock how i get original case make it unlock again its didnot ask to unlock code
egymaster said:
i havep607t tmobile i unlock sim card in cellunlocker.com its working but no wifi and bluetooth my friends told me that must root it to get full option he did but after that its locked again give me massege this is unauthrized software so sim card unlock how i get original case make it unlock again its didnot ask to unlock code
Click to expand...
Click to collapse
I am happy to help with your tablet, but don't understand your question. Maybe someone can help translate to English for you?

SIM unlock screen not showing on Sprint Samsung Note 4

I have two Sprint Samsung Note 4 phones and switching the carrier from Sprint to Metro PCS. I received the unlock codes from Sprint earlier today, after being on the phone for about an hour,
However, Metro PCS sales reps/techs were unable to complete the unlock process, since SIM unlock screen did not show and they have never worked on Samsung Note 4 before.
Metro PCS reps tried multiples times with metro pcs SIM card, and without SIM card to unlock the both sprint Note 4 phones , but none of the below procedures worked, unlock screen never appeared to insert the code.
Method #1 Insert a Non accepted SIM card in your phone and power on. Once finished loading your phone will ask you to enter a code, enter the Unlock Code, unlock screen did not show.
Method #2 Go to the dial screen on your phone as if you are going to make a call and press: #7465625*638*UNLOCKCODE# (8 digit unlock code) unlock screen did not show.
Method #3 Go to the dial screen on your phone as if you are going to make a call and press: #0111*UNLOCKCODE# (8 digit unlock code) unlock screen did not show.
Method #4 Go to the dial screen on your phone as if you are going to make a call and press #7465625*638*# Once prompted for code, enter the 8 digit Unlock Code. unlock screen did not show.
Is there another way to enter the code to unlock the note 4 simlock?
We would like to get both Note 4s unlocked and switch to Metro PCS ASAP.
Thanks in advance !!
SNote44 said:
I have two Sprint Samsung Note 4 phones and switching the carrier from Sprint to Metro PCS. I received the unlock codes from Sprint earlier today, after being on the phone for about an hour,
However, Metro PCS sales reps/techs were unable to complete the unlock process, since SIM unlock screen did not show and they have never worked on Samsung Note 4 before.
Metro PCS reps tried multiples times with metro pcs SIM card, and without SIM card to unlock the both sprint Note 4 phones , but none of the below procedures worked, unlock screen never appeared to insert the code.
Method #1 Insert a Non accepted SIM card in your phone and power on. Once finished loading your phone will ask you to enter a code, enter the Unlock Code, unlock screen did not show.
Method #2 Go to the dial screen on your phone as if you are going to make a call and press: #7465625*638*UNLOCKCODE# (8 digit unlock code) unlock screen did not show.
Method #3 Go to the dial screen on your phone as if you are going to make a call and press: #0111*UNLOCKCODE# (8 digit unlock code) unlock screen did not show.
Method #4 Go to the dial screen on your phone as if you are going to make a call and press #7465625*638*# Once prompted for code, enter the 8 digit Unlock Code. unlock screen did not show.
Is there another way to enter the code to unlock the note 4 simlock?
We would like to get both Note 4s unlocked and switch to Metro PCS ASAP.
Thanks in advance !!
Click to expand...
Click to collapse
Might want to call Sprint back..tried to unlock my wife iPhone. Sprint representative told it was unlocked just insert another carrier sim card and you are good to go.. insert T-Mobile sim card, no network. Called back, the phone was never unlocked the original representative didn't do it right.
Sent from my Note 4 using XDA Labs
KLPFL said:
Might want to call Sprint back..tried to unlock my wife iPhone. Sprint representative told it was unlocked just insert another carrier sim card and you are good to go.. insert T-Mobile sim card, no network. Called back, the phone was never unlocked the original representative didn't do it right.
Sent from my Note 4 using XDA Labs
Click to expand...
Click to collapse
I just found out Sprint Samsung Note 4 is Domestic SIM Unlockable and I was given the MSL (Master Subsidy Lock) code , instead of Domestic SIM Unlock (DSU) from the sprint agent.
Also, CDMA device (Sprint is CDMA) can only be used on another CDMA carrier. In the U.S., Sprint, Verizon and U.S. Cellular use CDMA. AT&T and T-Mobile Metro PCS) use GSM.
SNote44 said:
I just found out Sprint Samsung Note 4 is Domestic SIM Unlockable and I was given the MSL (Master Subsidy Lock) code , instead of Domestic SIM Unlock (DSU) from the sprint agent.
Also, CDMA device (Sprint is CDMA) can only be used on another CDMA carrier. In the U.S., Sprint, Verizon and U.S. Cellular use CDMA. AT&T and T-Mobile Metro PCS) use GSM.
Click to expand...
Click to collapse
If I remember correctly, someone user in here using Sprint N4 on GSM... I might not get the LTE due to the band on the other carrier but if it's unlocked you can use it b/c it does have sim.
go here and put the info and see if it work or not.
http://willmyphonework.net/
---------- Post added at 04:09 PM ---------- Previous post was at 04:06 PM ----------
i just input what you listed, it said you can use on MetroPCS but no 4G LTE
SNote44 said:
I just found out Sprint Samsung Note 4 is Domestic SIM Unlockable and I was given the MSL (Master Subsidy Lock) code , instead of Domestic SIM Unlock (DSU) from the sprint agent.
Also, CDMA device (Sprint is CDMA) can only be used on another CDMA carrier. In the U.S., Sprint, Verizon and U.S. Cellular use CDMA. AT&T and T-Mobile Metro PCS) use GSM.
Click to expand...
Click to collapse
This phone works on both cdma and gsm. It has both radios in it. Only thing is Sprint blocks some of the lte bands, so depending on your carrier you won't get lte. Pic below of lte bands.
I use this phone with Cricket(AT&T). I don't know if this phone unlocks with a number. I think there's just code that needs changed in the efs partition and settings in hidden menu. I'm not sure as i just paid Idone unlock app to unlock mine.
If you can't figure it out for free and decide to go the paid app route, I highly suggest idone apps.
Or try this for free: https://forum.xda-developers.com/no...print-users-easy-downgrade-to-kitkat-t3471131
I have this phone, apparently sprint says they have "unlocked" it, for domestic use as well (no longer under contract, new device, etc.) but of course there is no UNLOCK screen when I put in a t-mobile or mintsim card only says INVALID SIM. What else does one need to do?
Reset the phone completely?
I was given some code, is that the MSL code?
Shouldn't this somehow be easier?
tivoboy said:
I have this phone, apparently sprint says they have "unlocked" it, for domestic use as well (no longer under contract, new device, etc.) but of course there is no UNLOCK screen when I put in a t-mobile or mintsim card only says INVALID SIM. What else does one need to do?
Reset the phone completely?
I was given some code, is that the MSL code?
Shouldn't this somehow be easier?
Click to expand...
Click to collapse
I'm unsure of this because I paid to have mine unlocked.
But in settings, there's "UICC UNLOCK" Try that! With your code.
aaron74 said:
I'm unsure of this because I paid to have mine unlocked.
But in settings, there's "UICC UNLOCK" Try that! With your code.
Click to expand...
Click to collapse
thanks, I've tried selecting that and it does nothing and doesn't offer anything where one can input the code?
tivoboy said:
thanks, I've tried selecting that and it does nothing and doesn't offer anything where one can input the code?
Click to expand...
Click to collapse
You can try this: dial ##72786# and press YES.
This is from another thread. It will erase your phone, so backup anything important. Put your new sim in and input above code. It'll reprovision your device.
aaron74 said:
You can try this: dial ##72786# and press YES.
This is from another thread. It will erase your phone, so backup anything important. Put your new sim in and input above code. It'll reprovision your device.
Click to expand...
Click to collapse
i've tried this , the phone goes to something called SCRTN and then reboots, but everything is still there and it says " are you currently talking with an agent" So, that doesn't really seem to erase everything at all? I've tried it with the sprint sim (deactivated) in and the new t-mobile and or the new mintsim in.
tivoboy said:
i've tried this , the phone goes to something called SCRTN and then reboots, but everything is still there and it says " are you currently talking with an agent" So, that doesn't really seem to erase everything at all? I've tried it with the sprint sim (deactivated) in and the new t-mobile and or the new mintsim in.
Click to expand...
Click to collapse
Ok, sorry. I'm stumped. I use mine in USA, and i know USA unlock is harder so i just paid idone.
aaron74 said:
Ok, sorry. I'm stumped. I use mine in USA, and i know USA unlock is harder so i just paid idone.
Click to expand...
Click to collapse
thanks It's just SOOO bloody annoying. They SAY it's unlockable, they SAY they will unlock it, its clearly paid off and not under contract (was a cust 10 years 20 if you include work) and i've spent HOURS on the phone, chat, emailing etc. MSL does jack s..t.
does the idophoneapp unlock for DUN and does it open up LTE bands, or is that still a problem too?
tivoboy said:
thanks It's just SOOO bloody annoying. They SAY it's unlockable, they SAY they will unlock it, its clearly paid off and not under contract (was a cust 10 years 20 if you include work) and i've spent HOURS on the phone, chat, emailing etc. MSL does jack s..t.
does the idophoneapp unlock for DUN and does it open up LTE bands, or is that still a problem too?
Click to expand...
Click to collapse
If your speaking about using it for gsm service, then NO! The LTE bands is a whole other issue. You'll only get 4g hspa+. There have been many to try getting lte to work including myself, but no luck.
What you mean by dun? I've heard it mentioned, never knew what it stood for. Hot spot tethering i think you mean by that.
Yes it unlocks mobile hotspot. But if you install a custom Rom after, it'll also have to have it in it.
I understand your frustration. I've seen similar post of Sprint customers being locked out. I was never with Sprint, when i bought phone, i just got it unlocked!
Same problem:/
SNote44 said:
I have two Sprint Samsung Note 4 phones and switching the carrier from Sprint to Metro PCS. I received the unlock codes from Sprint earlier today, after being on the phone for about an hour,
However, Metro PCS sales reps/techs were unable to complete the unlock process, since SIM unlock screen did not show and they have never worked on Samsung Note 4 before.
Metro PCS reps tried multiples times with metro pcs SIM card, and without SIM card to unlock the both sprint Note 4 phones , but none of the below procedures worked, unlock screen never appeared to insert the code.
Method #1 Insert a Non accepted SIM card in your phone and power on. Once finished loading your phone will ask you to enter a code, enter the Unlock Code, unlock screen did not show.
Method #2 Go to the dial screen on your phone as if you are going to make a call and press: #7465625*638*UNLOCKCODE# (8 digit unlock code) unlock screen did not show.
Method #3 Go to the dial screen on your phone as if you are going to make a call and press: #0111*UNLOCKCODE# (8 digit unlock code) unlock screen did not show.
Method #4 Go to the dial screen on your phone as if you are going to make a call and press #7465625*638*# Once prompted for code, enter the 8 digit Unlock Code. unlock screen did not show.
Is there another way to enter the code to unlock the note 4 simlock?
We would like to get both Note 4s unlocked and switch to Metro PCS ASAP.
Thanks in advance !!
Click to expand...
Click to collapse
We're you able to figure it out. I'm having the exact same issue, and I can't find how to do it anywhere :crying:
Me too same issue. Gunna try downgrading my bootloader

Verizon SIM in CARRIER UNLOCKED T-Mobile s8+ not working

Hi
I have a carrier unlocked T-Mobile s8+ and need to use a Verizon SIM in it and am getting errors trying to use a verizon SIM. The Verizon SIM is from another phone and is already registered. I put the IMEI number of the phone into Verizons web portal to test compatibility and it failed. Does that mean there is no way to get this combination to work? Does the IMEI need to be in the VZW database for this to work? Will flashing XAA guarantee this to work? Thanks for any help and advice.
sideswipe said:
Hi
I have a carrier unlocked T-Mobile s8+ and need to use a Verizon SIM in it and am getting errors trying to use a verizon SIM. The Verizon SIM is from another phone and is already registered. I put the IMEI number of the phone into Verizons web portal to test compatibility and it failed. Does that mean there is no way to get this combination to work? Does the IMEI need to be in the VZW database for this to work? Will flashing XAA guarantee this to work? Thanks for any help and advice.
Click to expand...
Click to collapse
do u have a tmobile phone, it is different than the carrier unlocked phone, those are 2 different models,
the carrier unlocked.. the sim is unlocked..
the tmobile is not carrier unlocked, and by flashing the firmware of the unlocked version, will NOT unlock the sim.. u will need to device unlock app with the tmobile phone 1st... and usually tmobile will NOT unlock unless u have paid it off and using on their system for 40 days..
others like me had it unlocked with days of service, cause we are tmobile customers for years already... I on the other hand bought the phone on ebay from someone who bought it from Samsung and the imei was not added to tmobile system and I had to call tmobile to add the imei which took about 3 days, then to call back to request the sim unlock which took another 3 days, the device unlock app unlocked the phone instantly...
that was my process for me to get the sim unlock... but if urs it not unlocked and is paid off, another way to get it unlocked it to give it to someone u know, let them use it and call tmobile to start the above process...
Hope that sums up what must be done...
mdiaz33685 said:
do u have a tmobile phone, it is different than the carrier unlocked phone, those are 2 different models,
the carrier unlocked.. the sim is unlocked..
the tmobile is not carrier unlocked, and by flashing the firmware of the unlocked version, will NOT unlock the sim.. u will need to device unlock app with the tmobile phone 1st... and usually tmobile will NOT unlock unless u have paid it off and using on their system for 40 days..
others like me had it unlocked with days of service, cause we are tmobile customers for years already... I on the other hand bought the phone on ebay from someone who bought it from Samsung and the imei was not added to tmobile system and I had to call tmobile to add the imei which took about 3 days, then to call back to request the sim unlock which took another 3 days, the device unlock app unlocked the phone instantly...
that was my process for me to get the sim unlock... but if urs it not unlocked and is paid off, another way to get it unlocked it to give it to someone u know, let them use it and call tmobile to start the above process...
Hope that sums up what must be done...
Click to expand...
Click to collapse
Hi thanks for the explanation, I am pretty familiar with the differences between carrier (SIM) unlock and unlocked firmware as I have flashed Android in the past. I had the phone carrier (SIM) unlocked by T-Mobile through their app and I was still not able to use the Verizon SIM in my phone (not registered error). It turns out (and I found this out by reading through the many messages in this forum) that T-Mobile firmware apparently disables some frequencies that other carriers may use. Once I flashed the XAA unlocked *firmware*, I popped in my Verizon SIM and it worked like a charm. I hope this info is useful to someone at some time and I thank all of you for your contributions to getting this working. KUDOS!
sideswipe said:
Hi thanks for the explanation, I am pretty familiar with the differences between carrier (SIM) unlock and unlocked firmware as I have flashed Android in the past. I had the phone carrier (SIM) unlocked by T-Mobile through their app and I was still not able to use the Verizon SIM in my phone (not registered error). It turns out (and I found this out by reading through the many messages in this forum) that T-Mobile firmware apparently disables some frequencies that other carriers may use. Once I flashed the XAA unlocked *firmware*, I popped in my Verizon SIM and it worked like a charm. I hope this info is useful to someone at some time and I thank all of you for your contributions to getting this working. KUDOS!
Click to expand...
Click to collapse
Good to know, but sound weird, thought T-Mobile phones work for all gsm Sims just needing to change apn,
But now cdma merging with gsm, that's so much better as far as phones go, use any phone now from any provider.
Look how the s8 plus is all the same software and the same hardware, just different carrier stuff..
mdiaz33685 said:
Good to know, but sound weird, thought T-Mobile phones work for all gsm Sims just needing to change apn,
But now cdma merging with gsm, that's so much better as far as phones go, use any phone now from any provider.
Look how the s8 plus is all the same software and the same hardware, just different carrier stuff..
Click to expand...
Click to collapse
I thought it was weird too. Busted my head for a couple of days trying to figure it out. Is Verizon still CDMA? *scratches head*
Yes, their 3g and 2g networks are CDMA.
If you insert Verizon sim into T-mobile phone, you'll get LTE data, but you won't be able to make calls. Only data will work. T-mobile firmware support band 2, 4 and 13, so you should have data, but not phone service. If you don't have data icon, you'll need add Verizon apn.
FYI
Flashing the phone with G955U1 firmware fixed this issue. I am now able to use this successfully on Verizon.

Domestic unlock on rooted Sprint S6

Long story short, I signed up for T-Mobile and ordered a Pixel 2 which will not arrive until a few weeks. I want to temporarily use my Sprint S6 for the time being with the T-Mobile sim card.
I have the Sprint version of S6 (SM-G920P) which I paid off and requested a Domestic Sim Unlock. I got an email that my phone was successfully unlocked, but I'm not sure what they do over the air or will it even work on my rooted S6.
current situation: sim card invalid message when I shove in the Tmobile sim.
Can someone chime in and tell me if this is possible? Will I have to go back to stock before this can happen?
thanks
Oh man
I had the same issue. My nephew threw my TMO phone and it was unusable, so my sister gave me her old S6 since she upgraded.
I did the same as you, had them unlock it, got an email but no way to enter a code or anything, searched forever found out you have to be on the sprint network, so wifi wont work, and no service wont work. Then you have to click the three prompts to update PRL and whatever else then lastly click that UIUC unlock, then they said it will get a prompt that the unlock was good then all youd have to do is turn off the phone, replace Sprint SIM with the TMO SIM and i'd be good to go. But it never worked, I was in the Sprint store for an hour, even read their guide with them saying it had to be on Sprint then click the UIUC unlock before placing the new sim in. They kept blaming TMO even thought their sim goes in after an unlock. So I wish you better luck than I had and hope you get it going lol.

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