'No sim,no service' since software upgrade.

[Paul_Dunmow]

Has anyone else had this problem? Mine is on a Galaxy Z Fold 4. It is still working but won't connect to wifi?

[jonsie]

Back your phone up as you may need to do a factory reset

Nothing to do with O2 unfortunately

[madasaf1sh]

@Paul_Dunmow 

Best place to ask or look would be on Reddit or the Samsung communities, to see if anyone else has experienced it.. 

Or speak to Samsung direct...