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Galaxy Core 2 Carrier Unlock by Rooting and Custom Rom?

Hi there,
So I have a question regarding carrier unlock and Samsung Galaxy Core 2. Long time has passed since I played with Android devices so I wanted to see if everything from before (other brands) still stands.
I want to unlock this phone, its locked on Telenor, but it can't be unlocked without "unlock code"
I know that there were ways to unlock phones via Root and by installing Custom Roms so I want to check if that's still possible, but of course for this device.
And of course if someone can put me in the right direction, I would be very grateful.
Thank you!

Has anyone unlocked AND used a Custom ROM after?

Hi,
I need to unlock my device and my guess is I need to go back to Stock for the Tmobile Unlock App to work (does this even work in the first place?). So my question is has anyone used this successfully and also rooted/flashed another ROM after the unlock and it stayed unlocked?
If there are things I need to avoid after a successful unlock, please let me know that as well.
Thanks!

interesting

Well I know my N5 is unlocked under stock rom. After flashing a custom rom I lose the unlock. I've posted in other threads about this but there has not been a good answer other then getting an unlock code which I don't know how you would for tmo. But flashing an intl custom rom will let you get to the menu to enter the code to unlock. The question though is how and where would you get an actual numerical unlock code for a tmo device? Cellunlocker and a couple others I've contacted are not able to get an actual code to use for the tmo N5.

DriftorX said:
Well I know my N5 is unlocked under stock rom. After flashing a custom rom I lose the unlock. I've posted in other threads about this but there has not been a good answer other then getting an unlock code which I don't know how you would for tmo. But flashing an intl custom rom will let you get to the menu to enter the code to unlock. The question though is how and where would you get an actual numerical unlock code for a tmo device? Cellunlocker and a couple others I've contacted are not able to get an actual code to use for the tmo N5.
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Thanks for the response. Yeah, my phone needs to get unlocked cause I'm moving to Japan and I rather unlock it than buy a new phone...until the Note 8 comes out.
I tried to Odin back to stock, but I get a DRK fail so I can't lol

Sprint one plus 7pro oem/root question

I was reading through and people say the OEM was locked. Has anyone found a work around to this I want to get this phone for the mod friendliness however if the OEM unlocking is locked it would be impossible. Any work around? I really want to have access to hotspot with no issues

Not currently. I don't have the phone yet, ordered Friday probably won't be getting it til Monday. If it seems impossible to root, I'll trade it in for the note 10+.

Unfortunately not. You either have to meet Sprints requirements for them to unlock it (phone paid in full and active for 60 days or more on their network) or we have to wait and see if an amazing devs can help us out.

Wait does that mean that sprint will actually unlock the phone for you? If they do, is root possible or would someone still have to develop something for it?

dakoellis said:
Wait does that mean that sprint will actually unlock the phone for you? If they do, is root possible or would someone still have to develop something for it?
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Pretty sure the post about Sprint unlocking the device is confusing SIM unlock with bootloader unlock. Which of course are 2 very different things. I've never heard of carriers having anything to do with unlocking the bootloader. But unlocking the SIM, yes (they have to by law now).
Otherwise, the requirements stated would not be that hard to meet, and plenty of folks would already be unlocking their Sprint 7 Pro bootloaders.
Unlocking the bootloader is the main barrier to root. I don't see why (with an unlocked bootloader) you couldn't just root with one of the existing methods (flash patched boot img with fastboot, or boot TWRP and flash Magisk) and no real development would be needed. But it's that locked bootloader that is the kicker!

So is there any no root workaround for use of the native hotspot on the sprint version of this device?
Or would we just have to use an app?

SM-G970U with SM-G970F FIrmware?

Hello All,
Ok so first off you guys at XDA are the ****! I swear I can find anything I need to know on this site with a little research, much respect. So as the title suggests I wanted to know if it's possible to flash a SM-G970U (US) with SM-G970F (UK) firmware? I am basically looking for a slightly less complicated way of enabling "OEM Unlock" to Unlock the bootloader. And yes I realize that more than likely I will not be able to use any US sim cards with that firmware but if it is possible and I could unlock the bootloader I could basically load anything I wanted onto it right?
......actually seems like the SM-G9700 would be a better candidate for the firmware to load on the SM-G970U.
.....be gentle, I'm a N00B...kind of =\

Hello All,
xlivexevilx said:
Ok so first off you guys at XDA are the ****! I swear I can find anything I need to know on this site with a little research, much respect. So as the title suggests I wanted to know if it's possible to flash a SM-G970U (US) with SM-G970F (UK) firmware? I am basically looking for a slightly less complicated way of enabling "OEM Unlock" to Unlock the bootloader. And yes I realize that more than likely I will not be able to use any US sim cards with that firmware but if it is possible and I could unlock the bootloader I could basically load anything I wanted onto it right?
......actually seems like the SM-G9700 would be a better candidate for the firmware to load on the SM-G970U.
.....be gentle, I'm a N00B...kind of =\
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Actually i want to know as well because i read somewhere where someone said its possible because they are all the same models........did it work for you?

yea no...don't do that it won't work

Lol i already tried it flashed succesfully according to odin but when the device rebooted it came with the same firmware before and nothing changed Lmao

how did it flashed ,please specify

I was told this is not possible. Unless you can find original overstock (i.e. that has NOT been updated) in which case you can pay to unlock the bootloader.
Otherwise, I believe any bootloader beyond v1 cannot be bootloader unlocked. Only hope is Sammie does us a solid when this goes EOL and unlocks the bootloader. Question is whether VZW and AT&T will prevent them from doing that.
My S10e is still going great, and if I could root and flash a custom rom I'd probably replace the battery and roll with it another 3-4 years because I have no interest in the larger phones that dominate the Android market now.

BL unlocking/custom ROM Question: What is permanently lost if I do that?

Hi,
Just grabbed an Xperia 5 II on a great deal and I'm loving this device. It's an A002SO. I have noticed in other threads that there is some loss with original functionality of the phone (maybe Dolby or some other features are broken even if phone is restored to stock). Is it true? And if so what features are broken.
I noticed that Xperia camera software are available for other roms too which is great but what about device fingerprint and BL unlock sensing protection for banking apps? (I am not interested in rooting the phone after flashing lineage/AOSP roms but more concerned about the broken safety net in-case I go custom ROM route)
Also, is there a risk of losing IMEI with all this process? Not talking about crossflashing here but would love an AIO guide about BL unlock > recovery > ROM and the Back to stock locked bootloader guides if there are any.
Thank you!

dark_prince said:
Hi,
Just grabbed an Xperia 5 II on a great deal and I'm loving this device. It's an A002SO. I have noticed in other threads that there is some loss with original functionality of the phone (maybe Dolby or some other features are broken even if phone is restored to stock). Is it true? And if so what features are broken.
I noticed that Xperia camera software are available for other roms too which is great but what about device fingerprint and BL unlock sensing protection for banking apps? (I am not interested in rooting the phone after flashing lineage/AOSP roms but more concerned about the broken safety net in-case I go custom ROM route)
Also, is there a risk of losing IMEI with all this process? Not talking about crossflashing here but would love an AIO guide about BL unlock > recovery > ROM and the Back to stock locked bootloader guides if there are any.
Thank you!
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I have a different model, but I recently went from stock to Lineage OS, then back to stock. I haven't had any issues. Dolby works, my data/LTE works, and I can still use my banking app just fine. Fingerprint detection was a bit more finnicky with Lineage OS, though.
I should also note, I'm currently rooted with my bootloader unlocked, and still no issues.

SomeRandomGuy212 said:
I have a different model, but I recently went from stock to Lineage OS, then back to stock. I haven't had any issues. Dolby works, my data/LTE works, and I can still use my banking app just fine. Fingerprint detection was a bit more finnicky with Lineage OS, though.
I should also note, I'm currently rooted with my bootloader unlocked, and still no issues.
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I gave up in the end because my device is Japan Softbank with bootloader unlocking not allowed. Crossflashing instructions have alot of "you can", "I think" but no definite root-to-fruit guide so I may convert it to global model and BL unlock without losing imei / 4G. Thank you for taking time to write the clarification.

dark_prince said:
I gave up in the end because my device is Japan Softbank with bootloader unlocking not allowed. Crossflashing instructions have alot of "you can", "I think" but no definite root-to-fruit guide so I may convert it to global model and BL unlock without losing imei / 4G. Thank you for taking time to write the clarification.
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I don't actually know if that would work... I don't mean to give you another indefinite answer, but I tried that once on a Japanese Xperia 10 II. I know it's a different device, but it may still apply in your situation. I would still try it, though. Worse case scenario, you have to use Sony's repair tool to get back to stock.
(Also, if you're interested in a non Japanese model, I am currently selling my 5 II.)

SomeRandomGuy212 said:
I don't actually know if that would work... I don't mean to give you another indefinite answer, but I tried that once on a Japanese Xperia 10 II. I know it's a different device, but it may still apply in your situation. I would still try it, though. Worse case scenario, you have to use Sony's repair tool to get back to stock.
(Also, if you're interested in a non Japanese model, I am currently selling my 5 II.)
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I am from Pakistan so it's gonna cost me double the actual price to pay customs taxes and get it cleared for use in-country. Our country has a rule about only the devices which are approved after paying hefty taxes, are permitted on Pakistan's cellular operators.

This was discussed before, in short you seem to lose out certain manufacturer keys and your phone remembers you have unlocked its bootloader before. As for functionality, iirc they seem to come back after relocking.
More info: https://forum.xda-developers.com/t/closed-delete.4177209/post-87242833