How can i unlock my phone without a sim card? - Redmi K20 Pro / Xiaomi Mi 9T Pro Questions & Answe

My phone is pretty much a dead weight now, i've updated to miui 12 and the IMEI number went to space for some reason and therefor it doesnt get sim card signal
I wanted to try to unlock the bootloader so i could flash the stock rom and stuff like that but how could i do it if the sim card doesn't work?

ashye said:
My phone is pretty much a dead weight now, i've updated to miui 12 and the IMEI number went to space for some reason and therefor it doesnt get sim card signal
I wanted to try to unlock the bootloader so i could flash the stock rom and stuff like that but how could i do it if the sim card doesn't work?
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I don't think it is possible to unlock BL without a working SIM card.

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How can I unlock my phone to work with prepaid SIM card?

I honestly tried to find the answer to this everywhere before posting. I already have the unlock code from HTC and Tmobile. I simply need to figure out how to unlock the phone.
The instructions I received with the unlock code said that the phone would notify me that the SIM is unregistered and I would put in my unlock code at that point. I assume this is only the case on a vanilla version of Android or whatever the current official release is.
As you may have guessed, I have my phone rooted and have been running CM for a while. When the prepaid SIM is in the phone CM does seem to realize that its there and there is a SIM tool app but it does nothing. I have flashed to a couple different customer ROMS including dwang and a couple older version of CM.
Is there any way that I can actually unlock my phone without having to unroot and go back to the official android release from tmobile?
Thank you to anybody that can help me.
namelessted said:
I honestly tried to find the answer to this everywhere before posting. I already have the unlock code from HTC and Tmobile. I simply need to figure out how to unlock the phone.
The instructions I received with the unlock code said that the phone would notify me that the SIM is unregistered and I would put in my unlock code at that point. I assume this is only the case on a vanilla version of Android or whatever the current official release is.
As you may have guessed, I have my phone rooted and have been running CM for a while. When the prepaid SIM is in the phone CM does seem to realize that its there and there is a SIM tool app but it does nothing. I have flashed to a couple different customer ROMS including dwang and a couple older version of CM.
Is there any way that I can actually unlock my phone without having to unroot and go back to the official android release from tmobile?
Thank you to anybody that can help me.
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Is it The AT&T Prepaid sim card. If it is then i don't think it would work. i have an unlocked g1 with an AT&T sim card and i unlocked it before rooting. So guess u have to do the same. hope i helped
Right now I am trying with a TracFone SIM card but I could try with an AT&T card from a friend in a couple of days. I don't even really need to get the service to work at this point.
The two things I really want are just to be able to unlock my phone and backup my contacts onto a secondary SIM card and I am having no luck doing either.
namelessted said:
Right now I am trying with a TracFone SIM card but I could try with an AT&T card from a friend in a couple of days. I don't even really need to get the service to work at this point.
The two things I really want are just to be able to unlock my phone and backup my contacts onto a secondary SIM card and I am having no luck doing either.
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This is how i did it. i put my sim card in the phone and turned it on until it got to the screen when it said ( enter network key) i put the code in and it worked. i wounder if your able to put the contacts on the sd card?

[Q] I'm rooted and SIM unlocked, BUT!

I have lost my unlock code due to a HD failure. I am currently rooted and unlocked, and I run the leaked Froyo ROM.
What will happen in the future, should I want to flash, say, a Cyanogen ROM (*if* it becomes available)? Will I lock again? I understand my unlock codes were wiped when I flashed the new ROM.
Is there a way to insure I do not become locked again?
I have searched threads extensively, I do not think I have found a consensus on this? Anyone care to enlighten me?
I unlocked back on 2.1 (JF6), updated to JH7, flashed 2.2 (JI6), and have also flashed Cognition Betas 6, 7, 8, 8.1, and 9...and I'm still SIM unlocked. As far as I know, it's permanent no matter what ROM you choose to flash.
Your phone can relock if you dont remove your sim when you flash
tjsooley said:
Your phone can relock if you dont remove your sim when you flash
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I never remove my SIM.
RKight said:
I never remove my SIM.
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That's what I did before I got my SIM locked, was playing around with JH7 a month or two back and somehow got it relocked.
DJNgoma said:
That's what I did before I got my SIM locked, was playing around with JH7 a month or two back and somehow got it relocked.
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Hmm...strange. I still have my code (saved on both my MicroSD and an external harddrive) but I might start removing it as a precautionary measure.
even i never removed my sim anytime while flashing or updating....mines still unlocked....i hope it doesnt get locked in the future, cant we permenantly unlock it. . . .
RKight said:
Hmm...strange. I still have my code (saved on both my MicroSD and an external harddrive) but I might start removing it as a precautionary measure.
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Keep it on Simplenote .
Thanks for all the info. I feel better now! And yes, I will remove my SIM before flashing

[Q] xt862 locked sim card

My xt862 locked to sim card where flash china xt883 rom. It does not pop up sim unlock code window when insert a sim card. How to get it pop up?
I reflash verizon rom and it doesn't work. still lock sim. Says invalid sim card/no service
djtwxj said:
My xt862 locked to sim card where flash china xt883 rom. It does not pop up sim unlock code window when insert a sim card. How to get it pop up?
I reflash verizon rom and it doesn't work. still lock sim. Says invalid sim card/no service
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Click to collapse
My xt862 was on the xt883 ROM when I bought it off craigslist. I had to flash it back to stock to get rid of the other guy's Google account (it wouldn't delete, said it needed factory reset). After wiping, and flashing back to stock, I had to re-flash the radio.img from that Chinese ROM (and swap out my build.prop) to get it working on GSM again. Have you done these two things since flashing back to stock? I don't know what the other guy did in the process of putting my D3 on the Chinese ROM, but the GSM capabilities were lost when I wiped it (it wasn't back to stock yet, it was still a Chinese ROM, but likely locked to Chinese bands...really weird). I had to put it to stock before I could get GSM back.
So, if you haven't re-flashed the radio.img and made sure you have the tweaked build.prop in /system, then you might want to do that and see if it starts to work.
If you already did these things, try replacing your SIM and restarting several times. Mine decides to lose signal or forget which operator I'm using occasionally, so it isn't quite 100% reliable. Not entirely sure why.
Good luck
EDIT:
Also, you shouldn't need to unlock the phone ever again, as in, calling Verizon to get an unlock code. You only have to do that once, and flashing back and forth to different ROMs, even wiping the phone, doesn't get rid of the unlock. Just fyi.

[Q] No Sim Card after S-Off

Hey guys,
I just S-Off my HTC Vivid with the Sim Card pulled out of the slot. I achieved S-Off and phone reboot back. I unlocked the bootloader again and rerooted the phone, flashed Dark Raider's Rom however my phone is telling me that the Sim Card cannot be found after putting it back into the slot. Any ideas?
Don't really know why you S-Off-ed without the SIM in the slot, but whatever.
Do you have another SIM card on hand? Try dropping it in. If it's still broken, format /system, /data, /cache and reflash your ROM. Try both SIM cards. If still broken, then S-Off probably screwed something up with your phone.
The sim card went bad. I must have scratched it or something when I took it or I'm not sure. All is working now after putting a new sim in.
Thanks!

Removing Simlock from HTC Mini 2 after update to CM 12.1

Hello all,
I have a UK HTC Mini 2 locked on EE, I would like to remove the simlock and as such I have purchased a code to do so from ebay. However, the code does not work, I have verified with the seller and he says it is correct so I assume it has something to do with me installing CM 12.1 (NostomoPop).
My phone is S-On, Bootloader unlocked, could somebody advise me how I could unlock the phone please??
Thanks :good:
ki99 said:
Hello all,
I have a UK HTC Mini 2 locked on EE, I would like to remove the simlock and as such I have purchased a code to do so from ebay. However, the code does not work, I have verified with the seller and he says it is correct so I assume it has something to do with me installing CM 12.1 (NostomoPop).
My phone is S-On, Bootloader unlocked, could somebody advise me how I could unlock the phone please??
Thanks :good:
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Click to collapse
The unlock works only on SENSE ROMs, so you can't unlock it on CM, AOSP or GPE ROMs. Even after you have unlocked you won't have network in non-sense ROMs.
kativiti said:
The unlock works only on SENSE ROMs, so you can't unlock it on CM, AOSP or GPE ROMs. Even after you have unlocked you won't have network in non-sense ROMs.
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I'm sorry to come to this thread so late but I've only just seen it. I hope you have already solved your problem but just in case here is my experience.
I have a One Mini 2 which was bought from eBay locked to Vodaphone. I bought a SIM unlock code online and had the same problem, i.e. the code did not work.
Stupidly I had cut down my mini SIM card to a micro card using a template I found online and this turned out to be the problem. I ordered a new SIM card from Giffgaff (their cards now come as a 3-format card which you cna just pop out to the correct size) and, after doing a SIM swap on-line to the new card number, put the new card in and entered the number as supplied. It worked perfectly.
I had already unlocked the bootloader and installed TWRP while waiting for the new card to arrive.
I have installed several different roms, CM12, Carbon, AOSP, Nostromopop (by far the best!), reverted back to stock, gained S-OFF with Sunshine, reloaded full stock from RUU, reinstalled TWRP, reinstalled latest Nostromopop, SuperSU, and on and on and on. I've never lost mobile network since I put in the new SIM card and entered the number I was given originally to unlock it.
So just in case you are still having problems, that was my solution: get a new SIM card!
Good luck
Hi ajlajluk,
I am in the same position as you were - HTC one mini 2 simlocked to vodafone, tried online unlock codes with no luck. I have a giffgaff simcard and cannot get it working, can you elaborate more on exactly what you did to get the unlock code working?
"after doing a SIM swap on-line to the new card number, put the new card in and entered the number as supplied. It worked perfectly"
How do you mean sim swap? tranfered numbers?
Im not having much luck when attempting to flash a stock rom and Sunshine doesnt like the CM11/CM12 roms when I tried to S-OFF (to change CID).
Any advice massively appreciated
robertbourne86 said:
Hi ajlajluk,
I am in the same position as you were - HTC one mini 2 simlocked to vodafone, tried online unlock codes with no luck. I have a giffgaff simcard and cannot get it working, can you elaborate more on exactly what you did to get the unlock code working?
"after doing a SIM swap on-line to the new card number, put the new card in and entered the number as supplied. It worked perfectly"
How do you mean sim swap? tranfered numbers?
Im not having much luck when attempting to flash a stock rom and Sunshine doesnt like the CM11/CM12 roms when I tried to S-OFF (to change CID).
Any advice massively appreciated
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Ignore me, sorted happy as larry

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