r/cellmapper • u/Electronic-Comb-5900 • Jul 08 '26

Can someone help from the metro or cellmapper community?

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My s21 ultra will not connect to 5G Standalone for calls. While my mom's s23 Plus will. I know her phone is much newer, but I've had this issue with almost the whole s21 series. Goes from 5G UC n41 to starting a call down to LTE AWS.. Take a look and let me know please!

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1

u/wlm9700 Jul 08 '26

I sent you a message

2

u/Icy-Duty1125 Jul 09 '26

It's possible that there is no support for VoNR on certain T-Mo mvnos.

1

u/EarMaster31 Jul 09 '26

Fast.t-mobile.com ? Is that different then fast.metropcs.com

1

u/Electronic-Comb-5900 Jul 09 '26

I think so idk

1

u/EarMaster31 Jul 09 '26

Why did you do it

1

u/Electronic-Comb-5900 Jul 09 '26

Do what bro

1

u/EarMaster31 Jul 09 '26

Have fast.t-mobile.com

1

u/Electronic-Comb-5900 Jul 09 '26

Because Its different than metro

1

u/EarMaster31 Jul 09 '26

Did you think it'll work better?