“My SIM has HD Voice service restricted. I cannot make any o

[VandanaP8571]

“My SIM has HD Voice service restricted. I cannot make any outgoing calls. Please check and remove the HD Voice/voice restriction from my number.”

[dalyer]

I'm not sure that 48 supports HD Voice aka VoLTE calls. 

Can you make normal calls? 

You may need to disable HD Voice/VoLTE and try again.

• https://www.makeuseof.com/what-is-volte/

Can you receive calls, send/receive texts and use mobile data ok?

If you need to contact 48 support about this then see the links in my signature below.