Not Receiving Calls only voicemails

[Tojo]

Any incoming calls are going straight to voicemail. My wife has a TESCO phone which has the same problem - I understand the TESCO system uses the O2 network. Tried phoning my mobile from my landline and out of 5 calls only got through one all other calls direct to voicemail. Signal strength 4/5 bars. Any suggestions?

[pgn]

@Tojo - see if the tips in here help: Guide: How can I sort out my network issues? 

Sounds like a mast near you may be having issues, you can check here: https://www.o2.co.uk/coveragechecker

[Tojo]

Problem was gone the following morning - cause unknown.

[pgn]

Sunspot activity, @Tojo 😎😆

Good job you are all back on-line now.

[Js1845]

I get this issue too. And I can't even check my voicemails as O2 says I have no credit. I have talked to tech team and told them about the signal issues but they just deny it and say that the signal is fine in my area.... It is not