Question S21 FE G990U2 to U1
- Thread starter jahanzaiblohani
- Start date
yakapa40
Senior Member
G990U2 and SM-G990U3 : S21 FE variants with support for NFC, Bluetooth 5.0, dual-band Wifi and Wireless Charging.
so i think you can only flash G990U3 firmware ( U1 is without support for NFC, Bluetooth 5.0, dual-band Wifi and Wireless Charging )
so i think you can only flash G990U3 firmware ( U1 is without support for NFC, Bluetooth 5.0, dual-band Wifi and Wireless Charging )
Well, I am not absolutely sure about G990U2, but for S21, it is certainly possible to flash G991U1 to G991U. One of my friends did that (From XAA csc to SPR csc) and instantly got 4 pending updates till Jan'2023 one after another.
G990U2 and G990U3 I'm totally confused with the model number because I have seen U and U1 model only . Actually my phone Is locked on t-mobile and the unlock price is high for binary 2 . It comes in binary 2 out of box . Is there any way to downgrade it to u3 or u2 binary 1
I just flashed U3 on my G990U2 and now it has 2 imei both physical imei not esim but both imei are same . Can I use dual sim in it ? I don't have dual sim tray
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yakapa40
Senior Member
Same imei is not the problem . My question is this phone has dual sim hardware or not?
It working . Both sim are working without any issue
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yakapa40
Senior Member
My phone was locked on t-mobile and got the remote unlocking service online he flashed 2 imei on it . After that I flash U3 on it and my started displaying it G990U3DS
Incorrect.
U1 is simply the USA unlocked version. And they do have NFC, dual-band wifi, wireless charging, etc.
I have flash my METROPCS G990U2 to G990U3,other sim card work fine,but t mobile sim card does not work ,can someone help me?I already change CSC to xxa,but still no internet,I do have sginal bar
its fixed.I don't why at G990BU3/XAA my tmobile sim card have signal bar but no service, other sim work fine.so I flash my phone to G990U2 VERIZON, now my tmobile sim card work, thanks
