Try some troubleshooting tips such as safe Mode @Patio
Put the phone in Safe Mode which disables your downloaded app's but let's your stock app's keep working. If the issues stop then this highlights a downloaded app as the possible issue. Come out of Safe Mode and start deleting your most recent downloaded app's one at a time until it stops. https://www.samsung.com/uk/support/mobile-devices/how-to-start-my-galaxy-device-in-safe-mode/
A Samsung Experience Store or Samsung Service Centre can take a look at your phone.
If your still within any relevant Cooling Off Period then think about having the phone swapped.
Also if a sim card is glitching this can cause issues. Your network can help you with a sim swap.
One very last resort is a factory reset after backing up.
If you originally set up your phone using a back up to restore your information into the new phone then if you factory reset then set the phone up as new and see what happens just to make sure it's not a corrupted back up causing this.
I wish you all the best with this.
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. "
