Hi @medievalpirate
May I ask....
Have you recently ported from another Network to Vodafone ?
I ask because if the Port In date is past then a Split Port which is where the files haven't properly settled can cause issues. Vodafone Porting Teams would need to be advised via customer services.
Does this happen everywhere or in one location ?
I'm thinking if in one location then it maybe signal issues. Check your signal by inputting your postcode in > Vodafone Network Checker. You can Zoom out on the map to check surrounding masts too.
If it's happening everywhere then the phone or SIM card could be at issue.
As a process of elimination to rule out the sim card or phone that maybe at issue can you please try your Sim Card in another phone and another sim card in your phone.
Vodafone has a template to help > Network-issues-initial-checks-and-template.
If it's the Sim Card then any Vodafone Highstreet Store can swap it via a Sim Swap.
If your SIM card works ok in an alternative phone but the alternative sim does not work properly in your Samsung phone then a Samsung Experience Store or Samsung Service Location can run a diagnostic on the device.
Alternatively A Vodafone Highstreet Store can send it off and check any Cooling Off period which with Vodafone it's 30 days of initial ownership to have a new phone supplied. After 30 days it's a diagnostic / repair.
Current Phone >
Samsung Galaxy s²³ Ultra 512gb Phantom Black.
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