It’s not a double-click. Press once to stop the ringer, then press again to reject the call.

Is it sitting on a charger? Stray current from a dodgy charger can cause “ghost touch”

The watch has GPS, but without some way to connect to the internet there’s no way for it to share its location with any other device.

When it left the factory, it was waterproof. Just clean it off with a damp rag and go about your day.

Also, there are tons of services you can use to back up your photos automatically.

Unless the price difference will cut into your food or heat budget, 13 all the way. Face ID, better camera, better battery, Magsafe, etc.

Also, don’t count the 13 mini out. The phone is smaller than the SE but the screen is bigger.