Loss of network

[ToshM]

My S22 Ultra keeps loosing network and am getting missed calls which are not on my phone record. I only know about from text that come after a missed call. Any ideas on what's wrong? 

[Glenntech]

Can try resetting your network settings.
Have you got an old SIM card. If so maybe getting a new updated version from your service provider can help

See if your network provider can push network settings to your phone.

Naturally make sure your phones software is upto date.

It's possible you may need to clear the Partition Cache on the phone

[ToshM]

I renewed my sim with the phone 4 months ago. Have even reset phone to factory settings still no joy

[AndrewL]

@ToshM: Are you experience the loss of network connection in a certain location, as it may be the case that your network has limited service in that area. Have you tried reaching out to your network directly to clarify this, or to enquire about any temporary issues with the service in the affected area? 

[Diogo Carvalho]

The same is happening to me and to a friend after the latest update. The network signal was very good before and now my phone constantly loses network connection. I tried everything and nothing solves the issue. The problem is not the SIM nor the carrier. It is something related to the update because my friend has just updated and is having the same issue now.