Sure? Hmm my mom's redmi note 9 works fine with 4G+

Wifi calling is due to volte. You can try ask digi if your volte has been enabled for your phone. Theoretically on paper, CS will say your digi doesn't support volte on lower xiaomi phones but then everyone uses it. So they'll activate for you.

Apa problem? Cannot 4G or cannot 4G+?

If totally cannot 4G, then of coz 4G+ is out of scope.

If totally cannot 4G, u can call CS to ask. I gave my old number to my mom, a very old Digi number since like 15yrs ago. That sim card don't have 4G capabilities. I remember calling Digi back then asking why I don't get 4G even when my phone is 4G enabled. They straight asked me if I've changed my sim card before, coz old sim don't have 4G. After change, my mom straight have 4G.

Also another question is where you stay. I assume Digi is closing the Band 1 soon (phasing out 3G by end of this year), they should have Band 8 frequencies at most towers to replace Band 1. You should get your 4G unless your area totally Band 1 tower

Not sure which is your issue.

PS: redmi 10 prime will never get 4G+ because redmi 10 prime doesn't have Band 7, which is essential to get 4G+ since your phone has carrier aggregation but without B7, cannot combine B3+B7

This post has been edited by beebee1314: Nov 30 2021, 09:35 AM

If you don't get 4G, maybe is SIM card issue, if you tested your phone with another Telco and get 4G, highly probably is SIM card or location can't get 4G.

If it's about 4G+, your phone will never get 4G+.