SIM unlock solutions - Upgrading, Modifying and Unlocking

Does SIM unlocking a phone has something to do with the firmware? If the radio is changed will the phone be SIM unlocked
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Do I need T-Mobile SIM to unlock the G2?

I have ordered a T-Mobile G2 from the US and was wondering if I need the T-Mobile sim card in order to unlock it?
No.
Sent from my HTC Vision using XDA App
thanks mate

[Q] how to network unlock without swapping sim cards?

Hi. I have the unlock code for my note 2. However, in the instructions, it says to insert a non t-mobile simcard. Is it possible to unlock the note 2 without changing sim cards? LIke bringing up a menu to enter the unlock code or something?
Thanks
Don't think so.
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ekerbuddyeker said:
Don't think so.
Sent from my SGH-T889 using xda app-developers app
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thanks. ended up getting an at&t prepaid sim.

How to check if my g2 is unlocked?

My parents are going to England. We live in the US. I used the cyanogen/xda method to root.
Is it already carrier unlocked? I only have Tmobile sim cards, unfortunately, the new sim will come from England. So I'd like some verification that it's unlocked before they take it on a trip.
How would I unlock it if it's not? I'm running a recent andromadus rom
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I think I used gfree, which seems to unlock it, I'm going to try to get a sim from something non-Tmobile.
Open to suggestions about how to test unlock
Sent from my SGH-M919 using xda app-developers app
To check if your phone is sim unlocked you can run the gfree check through adb, or you could borrow a friends sim card from another carrier.
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Changing Roms can unlock sim ?

Changing Roms can unlock sim ?
No... Sorry. But I have never had an issue just asking the carrier for the code
Sent from my HTC One VX using xda app-developers app

Htc one m8 unlocked developer edition tmobile lte problem

I having problem with my unlocked phone with tmobile service.i already tried different methods as change the apn ,bands,factory reset ,changed the nano sim card..i contacted tmobile but not lucky..now im thinking to sell it on ebay and get tmobile version..if any body knows the problem please let me know..thanks
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I don't think the unlocked version has the LTE radios for T-Mobile
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