Can't make calls or dial ussd Tecno W4

[edgamestar]

I recently bricked my Tecno W4 but I was able to get it back using backed up ROM.
I Then went ahead to flash custom recovery on it then root.
Installed xposed framework v86 on it afterwards.
Everything was successful only for me to insert my sim card in it now and I can't make or receive calls, can't even check airtime.
I'm getting signal though.

What can I do to fix this?

[hovatek]

I recently bricked my Tecno W4 but I was able to get it back using backed up ROM.
I Then went ahead to flash custom recovery on it then root.
Installed xposed framework v86 on it afterwards.
Everything was successful only for me to insert my sim card in it now and I can't make or receive calls, can't even check airtime.
I'm getting signal though.

What can I do to fix this?

Dial *#06#
I want to know if the phone has valid IMEIs