If I have the AT&T variant and flash the universal firmware. Could I then use the phone on the Verizon network??
If you sim unlock the phone then yes it should work.
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Hey all. I did the SIM unlock through the service menu on my ATT I747 and I was wondering if this option is available for the Verizon S3 if you flash it to 4.1.1. I am on 4.1.2 on this verizon s3 and am going to downgrade to 4.1.1 The service menue is there on 4.1.2 but some of the options are missing. If I flash to 4.1.1 Does This Work???????
update
I did the 4.1.1 root injected flash, and the service menue stops at network lock option and from what I have tested and read its already sim unlocked anyway. I put an active att sim in it and it worked just fine although with this phone you can only get EDGE network on this phone with a att sim or straight talk sim. Its rooted, BL unlocked custom recovery, and JellyBeans ROM installed. Still no matter what I do or try it is stuck on edge. If there is anything else I can do to make 3 and 4g work on this Verizon GS3 through GSM straight talk for the love of God someone please fill me in. Or if anyone wants to trade for an att version of the GS3 PM me and lets do it.
Verizon GSIII is restricted to 2G EDGE outside of VZW. You may able to get 3g(hspa+) in Asia or Europe.
Can i use a Sprint phone for ATT if its unlocked or locked? Using toolkit should be fine? I have my micro sim
Can I Flash AT&T firmware onto this Unlocked Model so I can have Wifi Calling and Video Calling???? The Unlocked model above will not allow with an AT&T Sim card installed. What is purpose of getting an Unlocked phone when you cannot do this?? Thanks for a reply.
I have my at&t note 10+ unlocked by code. If I flash unlocked 975u1 firmware can I use sprint with volte? Or do I need to install sprint firmware. (AT&T firmware is not getting service with the sprint sim even though activated with the imei.
Seems I can get a great deal on a US unlocked Note20, but for my use case I want to dual sim it with a physical Verizon Sim and a T-Mobile e-Sim.
Can I do this with the unlocked phone, or is there a way to flash the firmware to the T-Mobile ROM to be able to do this? Do I lose anything by buying a U1 generic unlocked version?
jrapps said:
Seems I can get a great deal on a US unlocked Note20, but for my use case I want to dual sim it with a physical Verizon Sim and a T-Mobile e-Sim.
Can I do this with the unlocked phone, or is there a way to flash the firmware to the T-Mobile ROM to be able to do this? Do I lose anything by buying a U1 generic unlocked version?
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I am using the same setup with a U1 device. Flash TMobile firmware, instructions are in one of the threads here.
I have question if I flash T-Mobile firmware, what bloatware comes with it. Secondly both sims can be non-T-Mobile or eSim can be only T-Mobile and nano sim from other carrier?
Both sims can be non TMobile.