@chai25
As a process of elimination can you try your sim card in another phone and then see what happens to rule out a possible sim card issue.
Your network can replace the sim card via a Sim Swap.
Also if possible try another sim card in your phone To see what happens.
Is this happening everywhere or in a particular place ? Just thinking if this is your network masts.
You can run a diagnostic in Settings > Battery and Device Care > Diagnostics.
And you can reset the Network Connection in Settings > General Management > Reset > Reset Network Connection.
Ultimately a Samsung Service Centre can assess your phone.
If I can be of any further help then please don't hesitate. Take care. 😎
Daily Driver > Samsung Galaxy s²⁴ Ultra 512Gb ~ Titanium Black.
The advice I offer is my own and does not represent Samsung’s position.
I'm here to help. " This is the way. "
