I have signal, can send and receive messages but can’t send or receive calls

[Lyns7777]

Currently on PAYG, able to send and receive texts use mobile data, but have no voicemail or can’t make or receive voice calls

[pgn]

Voicemail may need to be set up, @Lyns7777 - Guide: All you need to know about O2 Voicemail 901 

Your phone may need a reboot, or your SIM may need to be taken out and cleaned carefully with a lint-free cloth to clean the contacts. Good luck!

[Lyns7777]

Hi, thanks, I’ve tried all those thing, I’ve also tried the Sim in another phone, doesn’t work, so I think I need a new one

[pgn]

Easiest way is to take phone and SIM and photo id into an O2 shop, @Lyns7777.

You could request a free SIM and swap your number from old to new on-line if you wish, assuming your MyO2 is working. https://www.o2.co.uk/shop/sim-cards/pay-as-you-go

[Lyns7777]

Thanks, just done a network check and it appears there are some issues with the local mast so I’ll drive somewhere and try it from there to check 

[pgn]

Well done! The SIM in other phone bit made me wonder, assume the other phone was not on O2...

Glad you got sorted, @Lyns7777 👍🏼