Unlocking Sprint based S8 after changed firmware to T-mobile. - Sprint Samsung Galaxy S8 Questions & Answers

Hey there,
I got a S8 phone from a coworker, that belonged to their ex. It was locked to their ex's google account. She gave it to me and said I could have it if I could get it to work.
Ended up flashing it with the T-mobile S8 firmware but only to find out that it was unlocked to the Sprint network. She is no longer on his plan so could not call Sprint to unlock it. And she doesn't want to call him to deal with it. Anyway, so no problem. Can unlock it via a 3rd party. Went with unlock base but still waiting for the code.
From what I read on the site, I will need to insert my sim and it will ask me for the unlock code. Unfortunately, when I insert a sim currently, it just says to contact sprint. I'm guessing this is due to the T-mobile firmware.
Will I now have to install the Sprint firmware to get it give me the unlock prompt upon sim insertion?
And after it's unlocked, can I go back to the T-mobile firmware?
Thanks for all the help in advance!

If the IMEI is paid off you can request an unlock from Sprint, if not you would need to use third party.
You can attempt unlock yourself but you do it at your own risk.

Related

Unable to unlock AT&T Fuze

I've received and confirmed the unlock code from AT&T based on my IMEI # - but it is not being accepted as valid by my Fuze. I've downgraded the radio and ROM to stock, and I am still under the 5 invalid unlock attempts before I'm stuck to AT&T. Any thoughts on what to do when the code from AT&T doesn't unlock the SIM?
Thanks,
TT
me too!
You are not along!
I am having teh same problem. First I got the unlock code from my account, after that I called and got the code from them and both did not worked.
I do not know about you, but I probably will complain and change the phone it by waranty while I have it.

SIM Unlock - Your phone is not yet personalized. ???

Purchased a used D850 that was supposedly unlocked. Is there any way to verify other than trying other SIMS (which I don't have)? Picked up a code from an eBay seller and when I enter 2945#*850# each of the 5 menu items returns "Your phone is not yet personalized" with "Dismiss" as the only option.
joarce said:
Purchased a used D850 that was supposedly unlocked. Is there any way to verify other than trying other SIMS (which I don't have)? Picked up a code from an eBay seller and when I enter 2945#*850# each of the 5 menu items returns "Your phone is not yet personalized" with "Dismiss" as the only option.
Click to expand...
Click to collapse
You need to put a non AT&T sim in it to find out.
hyelton said:
You need to put a non AT&T sim in it to find out.
Click to expand...
Click to collapse
I put in a PagePlus (Verizon) SIM and phone booted normally (AICP Lollipop) and there is no service; there wasn't any message about SIM.
joarce said:
I put in a PagePlus (Verizon) SIM and phone booted normally (AICP Lollipop) and there is no service; there wasn't any message about SIM.
Click to expand...
Click to collapse
Well there is your problem, You can't use the D850 on PagePlus/Verizon... Verizon is CDMA carrier not GSM. The only reason why Verizon uses sim cards is for LTE.
You'd only be able to use a VS985 or a LS985 on page plus.
hyelton said:
Well there is your problem, You can't use the D850 on PagePlus/Verizon... Verizon is CDMA carrier not GSM. The only reason why Verizon uses sim cards is for LTE.
You'd only be able to use a VS985 or a LS985 on page plus.
Click to expand...
Click to collapse
I am aware of that.
I switched from PagePlus (Verizon) using the VS985 to Cricket (AT&T) using the D850 with the Cricket SIM. The person I bought the D850 from said it was SIM unlocked and I'm trying to verify that; I've purchased an unlock code for the D850, but when I dial the code I mentioned above each of the five options returns the "Your phone is not yet personalized" message with the only option being "Dismiss."
You then told me to insert a non-accepted SIM so I inserted the PagePlus (Verizon) SIM.
joarce said:
I am aware of that.
I switched from PagePlus (Verizon) using the VS985 to Cricket (AT&T) using the D850 with the Cricket SIM. The person I bought the D850 from said it was SIM unlocked and I'm trying to verify that; I've purchased an unlock code for the D850, but when I dial the code I mentioned above each of the five options returns the "Your phone is not yet personalized" message with the only option being "Dismiss."
You then told me to insert a non-accepted SIM so I inserted the PagePlus (Verizon) SIM.
Click to expand...
Click to collapse
Ahh so you where just testing? Well using a Verizon system to test is not a good test. But wait your trying using a Cricket sim? A D850 does not have to he unlocked to work on Cricket, AT&T Go Phone, H20 and other AT&T mvnos. It just works.
If your trying to use a non AT&T/mvno sim then it would need to be unlocked like if you wanted to use T-Mobile.
Also if the phone is locked you CANT unlock it using a custom ROM, you have to flash it back to stock. But if your using it on Cricket the phone doesn't have to be unlocked.
hyelton said:
Ahh so you where just testing? Well using a Verizon system to test is not a good test. But wait your trying using a Cricket sim? A D850 does not have to he unlocked to work on Cricket, AT&T Go Phone, H20 and other AT&T mvnos. It just works.
If your trying to use a non AT&T/mvno sim then it would need to be unlocked like if you wanted to use T-Mobile.
Also if the phone is locked you CANT unlock it using a custom ROM, you have to flash it back to stock. But if your using it on Cricket the phone doesn't have to be unlocked.
Click to expand...
Click to collapse
I want to unlock the D850 for international use, specifically using LTE Band 1. The "Your phone is not yet personalized" message only appears when I boot the stock ROM; I can't access the menu in any custom ROM.
joarce said:
I want to unlock the D850 for international use, specifically using LTE Band 1. The "Your phone is not yet personalized" message only appears when I boot the stock ROM; I can't access the menu in any custom ROM.
Click to expand...
Click to collapse
So your using the back to stock guide and going 100% completely back to stock before trying by using the tot method right?
So are you trying to use the Verizon sim to unlock it? If so that might be a problem and you'd need something like a T-Mobile sim
hyelton said:
So your using the back to stock guide and going 100% completely back to stock before trying by using the tot method right?
So are you trying to use the Verizon sim to unlock it? If so that might be a problem and you'd need something like a T-Mobile sim
Click to expand...
Click to collapse
Yep, it had Lollipop when I got it, so I tot'ed back to KK.
The seller of the unlock code's instructions indicate their code will work with the Cricket SIM or an "unapproved" SIM, so I restored stock KK and entered the 2945etc code and received the message that is the title of this thread.
Perhaps the phone is already unlocked, as the person from whom I bought it said it was. I don't know this to be true, so I'm trying to verify before travel.
joarce said:
Yep, it had Lollipop when I got it, so I tot'ed back to KK.
The seller of the unlock code's instructions indicate their code will work with the Cricket SIM or an "unapproved" SIM, so I restored stock KK and entered the 2945etc code and received the message that is the title of this thread.
Perhaps the phone is already unlocked, as the person from whom I bought it said it was. I don't know this to be true, so I'm trying to verify before travel.
Click to expand...
Click to collapse
The only way to verify is use a T-Mobile sim or non USA sim.
hyelton said:
The only way to verify is use a T-Mobile sim or non USA sim.
Click to expand...
Click to collapse
Ya I figured, it's just interesting that the seller of the SIM unlock said it would work with the Cricket SIM.
joarce said:
Ya I figured, it's just interesting that the seller of the SIM unlock said it would work with the Cricket SIM.
Click to expand...
Click to collapse
You can get a T-Mo sim for free. Either go into a T-Mo store, or get one on their site.
I inserted a T-Mobile SIM and dialed 2945#*850# and after selecting each of the five options I recieved the "Your phone is not personalized" message.
Perhaps the phone is already unlocked? The carrier logo at the top left of the screen said T-Mobile, and when I went into Settings/About Phone it said T-Mobile LTE.
joarce said:
I inserted a T-Mobile SIM and dialed 2945#*850# and after selecting each of the five options I recieved the "Your phone is not personalized" message.
Perhaps the phone is already unlocked? The carrier logo at the top left of the screen said T-Mobile, and when I went into Settings/About Phone it said T-Mobile LTE.
Click to expand...
Click to collapse
Your phone is unlocked. If your phone was locked when you turn it on it will tell you. I'm not sure but that code I don't think has anything to do with unlocking lol. You never enter a code in the dailer. You always just enter your unlock code when you boot your phone.
Your phone is unlocked or you wouldn't be seeing the T-Mobile network.
I'm having a similar situation. I have the 851, and I'm receiving this same message. The phone was locked to T-Mobile, but I want to use it for Metro. Please help.
joarce said:
Purchased a used D850 that was supposedly unlocked. Is there any way to verify other than trying other SIMS (which I don't have)? Picked up a code from an eBay seller and when I enter 2945#*850# each of the 5 menu items returns "Your phone is not yet personalized" with "Dismiss" as the only option.
Click to expand...
Click to collapse
Call the original carrier of the phone, they should be able to get the unlock code. If not them, call ur carrier.
shortay85 said:
I'm having a similar situation. I have the 851, and I'm receiving this same message. The phone was locked to T-Mobile, but I want to use it for Metro. Please help.
Click to expand...
Click to collapse
You would have to contact T-Mobile
Sent from my iPhone using Tapatalk
hyelton said:
Also if the phone is locked you CANT unlock it using a custom ROM, you have to flash it back to stock. But if your using it on Cricket the phone doesn't have to be unlocked.
Click to expand...
Click to collapse
I got unlocked code from AT&T but did not get the unlock screen when I boot the phone with other sim card. The unlock did not work when I get to the unlock screen by dialing a special code. After reverting the phone to a stock ROM, the unlock works as the instruction that come with the unlocked described. Thanks

S7 - Sprint - SM-G930P - ROOT/UNLOCK HELP

Ok, I have a S7 I just bought from some guy on Craigslist. He said it's unlocked BUT.. I put my AT&T sim in and it says "INVALID SIM CARD" Its a SPRINT phone and I want to use it with my AT&T for coverage reasons. Can someone PLEASE tell me a beginner how on earth to make this happen step by step. Do i need to root it, is it really unlocked if it is telling me this on my valid sim card that works in my other phone, if it is LOCKED how do i unlock it, Do i need to ROOT it to unlock it , do i need to flash firm ware... I am willing to PAY someone to log onto my computer via TEAM VIEWER to unlock it or flash it or whatever needs to be done to make it work. I am online on SKYPE tonight for a few more mins so if you want to give it a go and know what your doing contact me at thereverendd on skype. If i dont answer, I will when i get on for sure next time. But I am here for a little while longer tonight... Thanks to all in advance..
If it's the same as the S5, you can't SIM unlock by rooting or flashing firmware, you'd have to take it to an unlock shop, or pay for an online service
Not sure about the US, but in the UK we can call the carrier and request an unlock code once the phone is over 6 months old on that carrier (Pay n Go) or contract some carriers provide an app to request unlock
I'm new to the S7 though so there may be another method
thereverendd said:
Ok, I have a S7 I just bought from some guy on Craigslist. He said it's unlocked BUT.. I put my AT&T sim in and it says "INVALID SIM CARD" Its a SPRINT phone and I want to use it with my AT&T for coverage reasons. Can someone PLEASE tell me a beginner how on earth to make this happen step by step. Do i need to root it, is it really unlocked if it is telling me this on my valid sim card that works in my other phone, if it is LOCKED how do i unlock it, Do i need to ROOT it to unlock it , do i need to flash firm ware... I am willing to PAY someone to log onto my computer via TEAM VIEWER to unlock it or flash it or whatever needs to be done to make it work. I am online on SKYPE tonight for a few more mins so if you want to give it a go and know what your doing contact me at thereverendd on skype. If i dont answer, I will when i get on for sure next time. But I am here for a little while longer tonight... Thanks to all in advance..
Click to expand...
Click to collapse
So what became of this issue? Did you get it unlocked? If so how did you do it and where?

do i have to be on the sprint firmware to get my device unlocked?

so i requested an unlock from sprint but its still locked. not sure if sprint is just ****ing with me or if i have to be on the sprint firmware, because right now im on the Unlocked firmware.
Might possibly have to be on stock sprint, but if you had them unlock it, they issue a update to the phone, or at least thats how my s5 and s6 was done, and that was only for international not a US carrier unlock. It did take a few days before it was issued to the devices i had so give it another day or so and if its done done, then i'd contact sprint again and ask them to re-send it to your phone.
Keep in mind if its a international unlock, you still wont be able to use any other carriers sim domestically in the USA on the device as it will remain locked to sprint Again it took 2-3 days before my devices received the unlock from sprint.
If you flash the eng boot/unlock files i can unlock it remotely if sprint doesnt come through for you
Happy Holidays
anderd said:
Might possibly have to be on stock sprint, but if you had them unlock it, they issue a update to the phone, or at least thats how my s5 and s6 was done, and that was only for international not a US carrier unlock. It did take a few days before it was issued to the devices i had so give it another day or so and if its done done, then i'd contact sprint again and ask them to re-send it to your phone.
Keep in mind if its a international unlock, you still wont be able to use any other carriers sim domestically in the USA on the device as it will remain locked to sprint Again it took 2-3 days before my devices received the unlock from sprint.
If you flash the eng boot/unlock files i can unlock it remotely if sprint doesnt come through for you
Happy Holidays
Click to expand...
Click to collapse
hello, it seems i cannot go back to the sprint firmware. where do i find those eng boot/unlock files? and can you do it for free please?
The Android Attorney said:
hello, it seems i cannot go back to the sprint firmware. where do i find those eng boot/unlock files? and can you do it for free please?
Click to expand...
Click to collapse
Contact me via PM , let me know what build its currently on and the files, depending on what build you're on, are the S8 unlock files posted in this section already. Those may not work depending on what build revision you have on the phone currently. With those files, you should also be able to flash back to sprint's firmware via the guide posted in this section as well.
I've been busy lately but i'll help ya out as much as possible.. Again PM me with info and we can go from there.
I can help if you need help still? Pm me.
The Android Attorney said:
so i requested an unlock from sprint but its still locked. not sure if sprint is just ****ing with me or if i have to be on the sprint firmware, because right now im on the Unlocked firmware.
Click to expand...
Click to collapse

Would installing unlocked bootloader and firmware unlock the phone?

So what I want to do is switch this phone to straight talk but want the att bloatware off this. If I install unlocked firmware and root the device would that make it unlocked? Like not carrier locked. Straight talk said I can already use a Sim despite it being locked but I wanna unlock it myself.
I don't think att will yet and not sure if they will at all. I'm converting my chapter 13 bankruptcy to a 7 on Tuesday and att bill is rolled into it so the phones will be mine once that is discharged but not sure if they will unlock them right after or if it will take months,that's why I'm asking this. I already reinstalled att firmware on this phone because I tried to install a custom room and messed up due to the bootloader issue of it being v5 I think.

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