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please help sim unlock s6

Hello everyone,
This is my first post I am stumped and need your help. I have a Samsung s6 (t-mobile 920t), my phone came with the t-mobile loaded app which allows the phone to be unlocked via t-mobile.
I know under the factory rom ( I have marshmallow 6.0.1) a sim unlock code is no good as there is no prompt for the code to be entered.... So, I rooted and installed 2 different roms: (carHDrom v.25-4dpJ2 and also XtreStoLite-ROM-3.3.1-DPDP) both roms rune beautifully. I AM PROMPTED the sim unlock screen, however I in put the sim unlock code which I bought yesterday via ebay and I get a error message saying " sim network unlock request unsuccessful". I bought this phone used it works fine on t-mobile. I am putting my At&t sim card in it, my sim card works perfectly in my rooted s5 from t-mobile however that phone gave me the option to put in a sim unlock code. The only thing is my at&t sim card was cut by me asit was a larger sim card to fit my s5, upon entering it into the s6 it is a bit smaller but still the phone detects a sim card is inside.
I have been racking my brain trying to figure out what the issue, is and I dont know what to do, I am reaching out to everyone for help.

Sim
jjam86 said:
Hello everyone,
This is my first post I am stumped and need your help. I have a Samsung s6 (t-mobile 920t), my phone came with the t-mobile loaded app which allows the phone to be unlocked via t-mobile.
I know under the factory rom ( I have marshmallow 6.0.1) a sim unlock code is no good as there is no prompt for the code to be entered.... So, I rooted and installed 2 different roms: (carHDrom v.25-4dpJ2 and also XtreStoLite-ROM-3.3.1-DPDP) both roms rune beautifully. I AM PROMPTED the sim unlock screen, however I in put the sim unlock code which I bought yesterday via ebay and I get a error message saying " sim network unlock request unsuccessful". I bought this phone used it works fine on t-mobile. I am putting my At&t sim card in it, my sim card works perfectly in my rooted s5 from t-mobile however that phone gave me the option to put in a sim unlock code. The only thing is my at&t sim card was cut by me asit was a larger sim card to fit my s5, upon entering it into the s6 it is a bit smaller but still the phone detects a sim card is inside.
I have been racking my brain trying to figure out what the issue, is and I dont know what to do, I am reaching out to everyone for help.
Click to expand...
Click to collapse
Did you ever figure your problem out

Invalid SIM Card error message on Sprint-unlocked SM-G900P with T-Mobile SIM.

I called Sprint and had them unlock my rooted, stock-Android 6.01 (G900VPU3PCA) SM-G900P Galaxy S5 for domestic and international. Sprint also gave me a 6-digit MSL unlock code.
I inserted a new, T-Mobile SIM card into the unlocked S5 and I activated the SIM card on T-Mobile's website. However, the phone displays "Invalid SIM Card" in the notification area, and I get no voice or data. I tried restarting a few times. I also tried dialing ##72786# to reset the PRLs a few times. It won't activate. It still displays "Invalid SIM Card".
T-Mobile reps say to call Sprint.
Sprint reps double checked that it is unlocked and said that:
1) For Sprint phones built prior to February 2015 (like the Galaxy S5, but not the S6, S7, etc.), unlocking only truly works for non-US SIM cards & international use.
2) Domestic unlocks only work if the domestic carrier is willing to work with you to reprogram your phone using the "unlock" MSL code that Sprint gives you when you have them unlock the phone. T-Mobile is not willing to help me reprogram the phone.
3) I did find a site (idoneapps.com) that claims to be able to unlock the phone and fix the "Invalid SIM card" error for $35. But for that price, I'd rather just sell my Sprint GS5 and buy a T-Mobile GS5 because the Sprint G900P doesn't support T-Mobile's LTE bands. (It only supports HDSPA+, which is probably fast enough, but may not be common throughout the USA).
Can anyone help me figure out how to get this phone activated on T-Mobile without paying a fee?

I struggled with this. Idoneapps used to have a free version that worked for unlocking but it has since been scrubbed from the web. I went ahead and paid for the service, and it workeds well.
Since you got the unlock code and already performed the unlock. I recommend getting the free galaxy tools app that was made prior to it becoming idone.
I used version 3.12
Check sim lock status, if still locked go ahead and unlock then use idoneapps recommended steps to enable tmobile service.
You need to change the gfc settings. This might let you use another sim card.
Sent from my SM-G900P using XDA-Developers mobile app

Anyway to unlock the phone for international use?

Need to go overseas for a few weeks and need to unlock an S8 plus so I can use the phone over there. I'm still under installment plan for another year so they refused to unlock my phones.
I don't want to root the phone since I use samsung pay a lot. Any other way to unlock the phone but keeping it as stock as possible?

Global roaming works well and is free! It is in many countries. Free 2G data as well as .20 per call. Log into your account and see if it's enabled, if not enable it and profit.
https://www.sprint.com/en/shop/services/global-roaming.html
Dave

Talk with Sprint directly and tell them what you need. They should be able to understand that you need your phone unlocked to use it with a local SIM card.
Moreover, I recommend you also check if you can use other (foreign) GSM SIM card with your phone that is from Sprint (CDMA). These are two different technologies, but your new Samsung should be able to accept both GSM and CDMA.

RossTeagan said:
Talk with Sprint directly and tell them what you need. They should be able to understand that you need your phone unlocked to use it with a local SIM card.
Moreover, I recommend you also check if you can use other (foreign) GSM SIM card with your phone that is from Sprint (CDMA). These are two different technologies, but your new Samsung should be able to accept both GSM and CDMA.
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You would think it's that easy right? Spoke to 3 reps and a manager and all shot me down. Said they changed their policy a few months ago and can no longer do so.
The S8 is a CDMA/GSM phone....

dannieboiz said:
You would think it's that easy right? Spoke to 3 reps and a manager and all shot me down. Said they changed their policy a few months ago and can no longer do so.
The S8 is a CDMA/GSM phone....
Click to expand...
Click to collapse
I wasn't aware of this policy shift.
I suggest you insert a GSM SIM card in your phone and check if it's asking/prompting for something, anything and if recognizes the SIM card.

If uou still need help msg me

Testing Unlocked Sprint Note 5 with at&t sim

I'm heading to Europe in a month and plan on using a European sim as I don't want to deal with Sprints free slow internet and $25 a week is more than I want to spend. Sprint is telling me my phone is unlocked (and I was under that impression years ago) but I want to be absolutely sure before I leave due to issues I've heard people have with Sprint phones. When I do the UICC unlock (with the Sprint sim still in), the phone tells me it can only be used with Sprint and to contact them. I called Sprint and they told me it is saying that because the Sprint sim is in the phone and the phone will work when another sim is added. I want to test my phone with my friend's at&t sim card. I really don't know squat about sim cards considering I've been a Sprint user my entire life. Therefore, I'm wondering:
1. Can I just turn off my phone, put the at&t sim in, reboot, and see if things work to test that the phone is truly unlocked?
2. After I'm done testing, can I put the at&t sim back in my friend's phone, and my Sprint sim back in mine, and have things go back to normal, or will this somehow screw things up with his phone or mine?

T-Mobile converted to international dual sim single imei question

As the title states, I have a T-Mobile OP 7 pro thats been converted to international. I already have the dual sim tray in it and have used it with a verizon sim in slot one and google fi in slot two. Only verizon required the imei to be attached to the sim. Google fi was pop it in and go.
Both lines worked perfectly with that set up.
I'm about to be using a verizon sim and a red pocket sim on att network in it. Thats going to require me to report the imei to redpocket to activate the sim sim same as verizon.
Will only haveing the one imei reported to both carriers be an issue? and is there a way to retrieve the second imei from the phone?+
I tried searching the forums and couldn't really find an answer.

As long as your 2 sims are on different networks for example one on AT&T and one on T-mobile you should be ok. The only time you might run into an issue is if you are using an mvno's sim that uses the same network as your primary. I'm doing that right now (also on a t-mobile op7 converted to international with dual sim tray) with T-mobile as my 2ndary and soon to be gone sim and Ultra Mobile as my Primary (which also uses t-mobile's network)......T-Mobile has been reported multiple times not to pay attention to this. Other networks may not be so forgiving. To answer your last questions...there IS no second imei to retrieve. The device was intended to be a single sim device so no 2nd one was allocated. The fact it works with the same imei in both is luck more than anything else.

famewolf said:
As long as your 2 sims are on different networks for example one on AT&T and one on T-mobile you should be ok. The only time you might run into an issue is if you are using an mvno's sim that uses the same network as your primary. I'm doing that right now (also on a t-mobile op7 converted to international with dual sim tray) with T-mobile as my 2ndary and soon to be gone sim and Ultra Mobile as my Primary (which also uses t-mobile's network)......T-Mobile has been reported multiple times not to pay attention to this. Other networks may not be so forgiving. To answer your last questions...there IS no second imei to retrieve. The device was intended to be a single sim device so no 2nd one was allocated. The fact it works with the same imei in both is luck more than anything else.
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Thanks for the reply, the second part is what I really wasn't sure of if the phone just hid the second IMEI or if it actually didn't have one.
I should be good then. I got the AT&T Redpocket sim and main will be Verizon.

blooddragon78 said:
Thanks for the reply, the second part is what I really wasn't sure of if the phone just hid the second IMEI or if it actually didn't have one.
I should be good then. I got the AT&T Redpocket sim and main will be Verizon.
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Click to collapse
Don't quote me on this, but from days with the 6T, I'm pretty sure it's just not reported in the software correctly but on the network side there are actually two different IMEID.
You should be able to (at least on Verizon) to log in and see the IMEID that is attached to a SIM.

Try the VZW sim in slot 1 and check online for the imei. Log out and switch the sim to slot 2 and check again. Hopefully you should see a different imei. Please let us know what you find out.
Sent from my SM-T830 using Tapatalk

blooddragon78 said:
As the title states, I have a T-Mobile OP 7 pro thats been converted to international. I already have the dual sim tray in it and have used it with a verizon sim in slot one and google fi in slot two. Only verizon required the imei to be attached to the sim. Google fi was pop it in and go.
Both lines worked perfectly with that set up.
I'm about to be using a verizon sim and a red pocket sim on att network in it. Thats going to require me to report the imei to redpocket to activate the sim sim same as verizon.
Will only haveing the one imei reported to both carriers be an issue? and is there a way to retrieve the second imei from the phone?+
I tried searching the forums and couldn't really find an answer.
Click to expand...
Click to collapse
@blooddragon78 couple questions for you, as I also have OP7P that I bought from t-mo and switched to international:
- Were you able to use the sim tray that came with the phone? Or did you buy an aftermarket tray? I've heard mixed messages about the tray from t-mo having physical space for 2 sim cards.
- Did you have to unlock your phone to make use of the dual SIM functionality? Or in other words, are you still making device payments to t-mo?

flick0416 said:
@blooddragon78 couple questions for you, as I also have OP7P that I bought from t-mo and switched to international:
- Were you able to use the sim tray that came with the phone? Or did you buy an aftermarket tray? I've heard mixed messages about the tray from t-mo having physical space for 2 sim cards.
- Did you have to unlock your phone to make use of the dual SIM functionality? Or in other words, are you still making device payments to t-mo?
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Click to collapse
I purchased a dual Sim tray from Amazon. The Sim tray from T-mobile will not fit 2 Sim cards. I'm a t-mobile tech expert so I do know for sure aside from owning one and doing it. For dual Sim to work the device does need to be unlocked as it only has one imei. If you didn't unlock before the conversion you will need to convert back to get the unlock app to be able to unlock.
There were a couple of threads on xda to get unlocked in the system but you still have to run the app. Not sure if they are active still.
If you need some help dm me.

Help with Op 7 Pro Sprint Unlocked version
Hello, I sent you a private message @blooddragon78, but Imma post here as well to see if anyone else can help me out, I'll greatly appreciate it. I came across this thread on being able to convert a T-mobile OP 7 Pro to the international version and enabling dual sim functionality. I was hoping to do the same as well, but I havent made the purchase yet in case it's not doable. Im currently looking at this OP7 Pro (Sprint version) that was factory unlocked and sold on Amazon (it's the OP 7 Pro sold at USD 499 by the Farmug Store) (if will be great if you guys can check and see the product to know what I mean exactly).
My question is what is the difference and meaning between "factory unlock/ phone unlocked" vs "sim unlocked" vs "unlocked bootloader?" I know this phone is unlocked for use on different carriers (and I live in Malaysia even), but how do I convert the phone to the international version so that I can receive updates from OnePlus directly (and not through the carrier)?
And how do I enable the dual sim functionality? Do I need to unlock the bootloader? Am I able to do that myself? Because I got confused as some people say unlocking the sim can only be done by the carrier, but Im not sure what is the difference of that with unlocking the bootloader.
In addition, say if Im able to convert it to the international version and get updates from OnePlus directly, dual sim functionality is enabled and such. Will updating the OS of the phone automatically (not doing it manually) lock the network/ brick the phone?

xHayashi said:
Hello, I sent you a private message @blooddragon78, but Imma post here as well to see if anyone else can help me out, I'll greatly appreciate it. I came across this thread on being able to convert a T-mobile OP 7 Pro to the international version and enabling dual sim functionality. I was hoping to do the same as well, but I havent made the purchase yet in case it's not doable. Im currently looking at this OP7 Pro (Sprint version) that was factory unlocked and sold on Amazon (it's the OP 7 Pro sold at USD 499 by the Farmug Store) (if will be great if you guys can check and see the product to know what I mean exactly).
My question is what is the difference and meaning between "factory unlock/ phone unlocked" vs "sim unlocked" vs "unlocked bootloader?" I know this phone is unlocked for use on different carriers (and I live in Malaysia even), but how do I convert the phone to the international version so that I can receive updates from OnePlus directly (and not through the carrier)?
And how do I enable the dual sim functionality? Do I need to unlock the bootloader? Am I able to do that myself? Because I got confused as some people say unlocking the sim can only be done by the carrier, but Im not sure what is the difference of that with unlocking the bootloader.
In addition, say if Im able to convert it to the international version and get updates from OnePlus directly, dual sim functionality is enabled and such. Will updating the OS of the phone automatically (not doing it manually) lock the network/ brick the phone?
Click to expand...
Click to collapse
I don't k ow about dual sim.but converting International will allow Ota updates. If it's sim unlocked it should stay. Mine is still sim locked to t-mobile and I'm on internatti fimware