So, I have an Xperia Z3, D6616, stock, locked bootloader still, and I'm considering sim unlocking the device for use on AT&T. Bought it on craigslist. It's currently locked to T-Mobile. Most unlock websites say not to purchase the unlock code for the device if it is locked to T-Mobile due to an unlocking app that T-Mobile installs on handsets that prevents third party unlocking. See attached pictures. I'm an AT&T customer, so this is a bit of a pain for me.
Called T-Mobile, they will not unlock the device as it does not meet the requirements. I'm not a T-Mobile customer either, so there is no account history associated with this IMEI. I have a feeling that someone bought this device at a subsidized price, sold it new in box, and pocketed the cash. Now I have a fancy T-Mobile MP3 player and digital camera that won't play nice with my AT&T sim....
Has anyone successfully unlocked this device for use on another GSM carrier while originally being locked to T-Mobile without going through the carrier's unlocking process? If so, what website/service did you use? I'm considering selling this thing as it's a bit useless on my network thus far, being locked to another carrier and all.
Thanks in advance.
is this me being a bit daft, but could you not simply put an unbranded firmware on the device via ftf and simply unlock the device via a website?
henson0115 said:
is this me being a bit daft, but could you not simply put an unbranded firmware on the device via ftf and simply unlock the device via a website?
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I'm not sure if that's a possibility. There is no root for this device without unlocking the bootloader, which wipes the TA partition and causes you to lose the DRM keys and cripples camera functionality. I'm trying to avoid unlocking the bootloader for as long as possible, but if unlocking, rooting, and installing a custom ROM will assist in sim unlocking, it may be in my best interest to do so.
I'm trying to do a network unlock with a code and keeping the phone stock if at all possible, at least until a root method without unlocking the bootloader is found, if it ever is... I just need a way to get a code for unlocking WITHOUT going through T-Mobile.
you don't need root to flash an unbranded ftf., once done then simply use a website and buy the unlock code, with the tmobile firmware out of the way there shouldn't be any interference in terms of network unlock.
what i am saying is:
1: flash global unbranded firmware via flashtools with ftf
2: buy your network unlock code
3: enter code as no t-mobile firmware is available on the device anymore to interfere
i am not saying this is possible as i do not have a t-mobile - us device to test, but my vodafone branded z3 has had an unbranded firmware flashed by myself with no root.
i hope this helps clear up any confusion.
henson0115 said:
you don't need root to flash an unbranded ftf., once done then simply use a website and buy the unlock code, with the tmobile firmware out of the way there shouldn't be any interference in terms of network unlock.
what i am saying is:
1: flash global unbranded firmware via flashtools with ftf
2: buy your network unlock code
3: enter code as no t-mobile firmware is available on the device anymore to interfere
i am not saying this is possible as i do not have a t-mobile - us device to test, but my vodafone branded z3 has had an unbranded firmware flashed by myself with no root.
i hope this helps clear up any confusion.
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I may try this tonight.
If I flash another firmware with flashtool, can I return to stock after unlocking without root access?
Rooting and/or unlocking the bootloader or flashing a custom rom or a different firmware has absolutely nothing to do with SIM lock.
If you try and sim unlock by doing any of that you are wasting your time.
Best bet is to go to your carrier and ask them to sim unlock it
gregbradley said:
Rooting and/or unlocking the bootloader or flashing a custom rom or a different firmware has absolutely nothing to do with SIM lock.
If you try and sim unlock by doing any of that you are wasting your time.
Best bet is to go to your carrier and ask them to sim unlock it
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Yeah, that has been my experiences in the past. The carrier always did it for me. But T-Mobile will not unlock this device as it does not meet eligibility requirements, and the unlock websites say not to buy a code for a T-Mobile US locked Z3. I need it unlocked for use on AT&T. I remember unlocking HTC devices with SuperCID and unlocking Samsung devices with dialer codes. Anything like that for the Sony side of the house? this will be my first Sony phone.
HORiZUN said:
Yeah, that has been my experiences in the past. The carrier always did it for me. But T-Mobile will not unlock this device as it does not meet eligibility requirements, and the unlock websites say not to buy a code for a T-Mobile US locked Z3. I need it unlocked for use on AT&T. I remember unlocking HTC devices with SuperCID and unlocking Samsung devices with dialer codes. Anything like that for the Sony side of the house? this will be my first Sony phone.
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Not that I know of. In the UK you can get any phone sim unlocked on any market stall in a few minutes for a fiver. Its not really to do with the phone but the carrier and the laws you have over the pond.
Simply try a websites unlock, I do not believe T-Mobile can block carrier unlocks. Who has told you otherwise?
See the attachments in the OP. The unlocking websites are saying not to purchase the codes if you have a T-Mobile US locked Z3. I don't want to waste $40, especially when there are no refunds, and want to know if anyone has successfully unlocked with a website and NOT the carrier.
D6616 has an NOT unlockable bootloader, so that method is a no-go.
If it was on EIP and they sold it, the phone may be blacklisted by T-Mobile already
I don't believe you can flash a different version firmware, for multiple reasons, one of which is because it's a D6616 and not a D6603
The T-Mobile SIM unlock tool does work if all conditions are met.
Good luck OP, I think you might have a difficult time with this one
se1000 said:
D6616 has an unlockable bootloader, so that method is a no-go.
If it was on EIP and they sold it, the phone may be blacklisted by T-Mobile already
I don't believe you can flash a different version firmware, for multiple reasons, one of which is because it's a D6616 and not a D6603
The T-Mobile SIM unlock tool does work if all conditions are met.
Good luck OP, I think you might have a difficult time with this one
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Again, the bootloader status has nothing to do with SIM lock.
Flashing another firmware will also not effect sim lock.
I'm seriously considering selling this device and going for another bootloader unlockable handset due to this unlock headache. T-Mobile is no help for unlocking this IMEI.
gregbradley said:
Again, the bootloader status has nothing to do with SIM lock.
Flashing another firmware will also not effect sim lock.
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Sorry for the first line, didn't mean to get that wrong. Definitely agree that bootloader unlock and SIM unlock have nothing to do with each other.
Called T-Mobile again, tried to unlock. No account number to tie unlock request to since I use At&t as a carrier. They recommend I call Sony directly and ask for an unlock. I did, Sony told me to contact the carrier again. I do, and have the T-Mobile rep call Sony guys on a three way call. I explain that I purchased the device on craigslist, not a T-Mobile account holder, I'm an active duty military member, phone was several hundred dollars, I didn't know... boohoo, I'm dumb, I should have purchased from Sony, No moneys to get a new phone since this was so expensive, etc. Sad poor me story, you know.
Sat on hold for a bit, but Sony caved and said they would attempt a remote unlock via code, but it would be between 1-3 days and the reply will be via email. Time will tell, now. Just waiting to see what happens. I hope it works. I had to have the situation escalated to the third level of supervisors to get this far...
sounds like good news, if that fails, you could ask someone you no on T-MOBILE or a family member to give them a ring and pretend its there phone, should also do the trick
That's a good idea!! Thanks for that. I'll find someone at work who has T-Mobile and go that route if I need to.
any updates.. i badly need my T mobile Xperia Z3 to be get it unlocked...
Sadly, there is no update. T-Mobile will not unlock the device unless I use it on their network for 45 days, ahve an account in good standing, etc. This isn't going to happen, as I am an AT&T subscriber. I have the Z3 listed for sale on craigslist. Awaiting a sale or trade. If anyone wants to swap phones for a still in the box T-Mobile Z3, let me know. Looking for an S5, G3, or Nexus 6. Gsm variants only. Too bad, cause I really like the Z3. I would keep it if I could sim unlock.
Is the unlocking app based off the Sim card? Cause I bought my tmo Z3 3 days ago. Used my Sim from my moto x. After I got everything set up I tried the permanent unlock which was successful.
I just recently a few days upgraded my phone from an older Samsung to a Pixel 3 XL., and I am on sprint.
And while still getting used to the Pixel vs Samsung, today I let the phone take the update to Android 10, and not really feeling the love and want to go back to Pie if I can. Already miss having the back button moved to the right side and a few other things.
I did buy the phone used, online, and is not under any lease etc. I do own it.
But unfortunately, I believe because it was probably a Sprint phone originally, OEM Unlock under the developer options is greyed out. I think this means I am currently SOL until there is a way to unlock it?
Thanks,
PT
ptmuldoon said:
I just recently a few days upgraded my phone from an older Samsung to a Pixel 3 XL., and I am on sprint.
And while still getting used to the Pixel vs Samsung, today I let the phone take the update to Android 10, and not really feeling the love and want to go back to Pie if I can. Already miss having the back button moved to the right side and a few other things.
I did buy the phone used, online, and is not under any lease etc. I do own it.
But unfortunately, I believe because it was probably a Sprint phone originally, OEM Unlock under the developer options is greyed out. I think this means I am currently SOL until there is a way to unlock it?
Thanks,
PT
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Click to collapse
Contact Sprint, give them the IMEI number, they will look up the phone to verify that there is no balance on it and then they will send you an unlock code. Or at least I know AT&T used to do that bank when I had Samsung phones. AT&T had a link you could go to and do it, but I'm not sure about Sprint.
FilthyFord said:
Contact Sprint, give them the IMEI number, they will look up the phone to verify that there is no balance on it and then they will send you an unlock code. Or at least I know AT&T used to do that bank when I had Samsung phones. AT&T had a link you could go to and do it, but I'm not sure about Sprint.
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I actually called them last night There tech support guy although rather nice seemed to not understand what I wanted. And after he got help was telling me I need to call google for it, which makes no sense to me.
In reading today here, it mentions Sprint will unlock a phone after 50 days on their network. But I think this is just referring to a Sim/Carrier unlock and not the OEM unlock ability?
https://www.sprint.com/en/legal/unlocking-your-sprint-device.html
EDIT......
How very strange, and perhaps my phone call last night got elevated. I just received a notification on my phone that is has been carrier unlocked and can not enable OEM Unlock. So I hope tonight to reinstall Pie.
ptmuldoon,
So effectively, are you saying that your previously Sprint (sim) locked phone is now (sim) unlocked, BUT that the OEM Unlock option is STILL greyed out?
Based on my reading, I've seen some folks mention that once the phone is (sim) unlocked, you should be able to OEM unlock the bootloader as well. And maybe that isn't necessarily saying that the OEM unlock option will become available, but that you can fastboot unlock bootloader. I'm not sure, but just confirming with you since you seem to be in that situation. Have you not been able to unlock the bootloader?
Thanks,
So long story short, I've decided to get myself a used Pixel 3 and the shop where I'm going to get it from said that its a carrier Japanese model. From what I know, the Verizon model does not allow for OEM unlocking, so can anyone let me know if the Softbank/Docomo/AU variant of the phone allows for OEM unlocking? Thanks a lot
Probably not, as it is carrier locked but you could try your luck with it
What might be the reason and what to do, if I can't find this in developer settings?
I am a bit confused of that. Maybe it is already unlocked? Does it disapear than? How to know whether it is unlocked?
Only for Exynos international CPU. If you have the US snapdragon, then OEM unlock is not an available option. If you are still on the original bootloader (probably unlikely, especially if you've already taken updates), then you can purchase bootloader unlock if you search for that thread.
kodiak799 said:
Only for Exynos international CPU.
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I do have exynos. I read that I need to be connected to Wifi before. Maybe that is problem. Probably it sends some data to Samsung that you want to do that. Other way is maybe via adb. Right now I don't have the device - I should do that for a friend.
yes I think you need to be connected to internet. I am not sure because i rooted my samsung phone 1 year ago but I know it was so that sometimes it was showing oem unlock option and sometimes not but I'm not sure anymore why.
Whether you get a carrier version or the factory unlocked U1 model, OEM unlock does not exist on this phone. So those in the US that were thinking of doing custom roms with this cheap new Android device, look elsewhere.
Samsung has blocked their bootloaders on U.S. phone variants for years now. The only way to unlock is with paid service unfortunately.
ShaDisNX255 said:
Samsung has blocked their bootloaders on U.S. phone variants for years now. The only way to unlock is with paid service unfortunately.
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What service are you referring to? I'd love to unlock mine.
Jay1175 said:
What service are you referring to? I'd love to unlock mine.
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Click to collapse
Well, it was located here: https://forum.xda-developers.com/t/sampwnd-usa-model-bl-unlock-info-u-u1-w.4201689/
But I guess it's temporarily closed until the person in charge returns. Usually it's not worth it for lower end phones since the unlock process can end up costing just as much as the phone tbh.
on some devices it takes 7 days for the oem unlock to show in developer options, have you tried the time and date hack to see if it shows
gav83collins said:
on some devices it takes 7 days for the oem unlock to show in developer options, have you tried the time and date hack to see if it shows
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This does not work on U.S. variants
SamPWNd is dead. Samsung patched it with firmware updates in 2021 (it is in the warnings not to install unpatched firware updates). The website is down. Unless they can find a new exploit in the new firmware, it is not possible.
Samsung has blocked BL unlock for a while. They seem to have shifted their target audience to a different group in recent years. If you really want BL unlock you should pick Pixel.
b1283822 said:
SamPWNd is dead. Samsung patched it with firmware updates in 2021 (it is in the warnings not to install unpatched firware updates). The website is down. Unless they can find a new exploit in the new firmware, it is not possible.
Samsung has blocked BL unlock for a while. They seem to have shifted their target audience to a different group in recent years. If you really want BL unlock you should pick Pixel.
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Click to collapse
it doesnt make sense from a business perspective, a regular audience doesnt even know about unlocking a bootloader, so they will be buying the phone regardless if samsungs advertising impress more than the competition, but for us lets say "power users" we know our warranty is void when we oem unlock, and buy making it easier to do it (oem unlock), they are more likely to shift more handsets to our side of the market, not only that but there is more chance of us breaking our devices which in turn gives them more income when we seek samsung official repairs or splash out on a new replacement, i really dont see the logic behind not allowing oem unlock unless its to test the abilities of the likes of chainfire in regards to exposing vulnerabilities
I bought the phone on sale just a few days before this thread was made (hoping to use it as a fun side-project / second phone to get back into modding- haven't been able to since my Note 5 since the Note 8 was locked). I had assumed getting a non-carrier one would be open but I haven't been able to get OEM Unlock to appear either : /. I even went with the A53 instead of A52 because I thought there was a better chance of having unlock on Exynos than Snapdragon. It's not too late to return but I'm still holding out hope someone can come up with something. I like Samsung hardware (for the most part) but without root... meh.
Willing to try ODINing tars and stuff if anyone has any ideas.
sidestream84 said:
I bought the phone on sale just a few days before this thread was made (hoping to use it as a fun side-project / second phone to get back into modding- haven't been able to since my Note 5 since the Note 8 was locked). I had assumed getting a non-carrier one would be open but I haven't been able to get OEM Unlock to appear either : /. I even went with the A53 instead of A52 because I thought there was a better chance of having unlock on Exynos than Snapdragon. It's not too late to return but I'm still holding out hope someone can come up with something. I like Samsung hardware (for the most part) but without root... meh.
Willing to try ODINing tars and stuff if anyone has any ideas.
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Exploits could take years to even begin to surface. S8 and S9 come to mind, but their root is so limited with locked bootloaders that it's almost not worth the hassle. I would return it to be honest or try and get an international variant imported. I've traveled to the U.S. with a Mexico variant phone and I got signal just fine, but I don't know how the internet speed compares if you use a U.S. SIM.
sidestream84 said:
I bought the phone on sale just a few days before this thread was made (hoping to use it as a fun side-project / second phone to get back into modding- haven't been able to since my Note 5 since the Note 8 was locked). I had assumed getting a non-carrier one would be open but I haven't been able to get OEM Unlock to appear either : /. I even went with the A53 instead of A52 because I thought there was a better chance of having unlock on Exynos than Snapdragon. It's not too late to return but I'm still holding out hope someone can come up with something. I like Samsung hardware (for the most part) but without root... meh.
Willing to try ODINing tars and stuff if anyone has any ideas.
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Click to collapse
I switched over from Pixel line just for a Samsung specific feature and a quick google had me certain I would be able to unlock the bootloader and root it. It sucks that its not the case, but I blame awful tech journalism. So many articles that claim their method will work for ALL devices in a family, or even ALL ANDROID devices period.
ShaDisNX255 said:
Exploits could take years to even begin to surface. S8 and S9 come to mind, but their root is so limited with locked bootloaders that it's almost not worth the hassle. I would return it to be honest or try and get an international variant imported. I've traveled to the U.S. with a Mexico variant phone and I got signal just fine, but I don't know how the internet speed compares if you use a U.S. SIM.
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Getting an international version isn't worth doing IMO because the 5G bands don't overlap the same way 4G does. I looked in to getting an international model but decided against it as it doesn't support one of the three 5G frequencies used in my town. I figure there's 0 chance of new frequencies being added to the hardware, but always a chance of finding a security flaw to unlock the bootloader.
there are still U.S. Bootloader unlock services, but as of right now the A53 is not supported.
and only certain versions of bootloaders are supported.
Not SamPWND