internet

Clear Safari history.

Clear the history and cookies from Safari on your iPhone, iPad, or iPod touch - Apple Support

Then do a forced restart.

Press and quickly release the Volume Up button. Press and quickly release the Volume Down button. Then, press and hold the Side button until you see the Apple logo.

If you still have problems, connect to iTunes and do a restore. Next, if needed, get a replacement sim for your phone unless there is a carrier settings update that resolves the issue.

Beyond that, make an appointment at the Genius Bar or an authorized service provider to have the phone evaluated.

Hi

Turn your router off for 20 /30 seconds when it's back on go to settings down to reset Reset network settings After reset enter your router wireless key.

Later go to website for your make of router check for firmware update.

Cheers

Brian 🇬-1F1E7;