
Protect your cell phone from heat
The most important rule is actually a matter of course: cell phones have no place in parked cars in hot weather. Unfortunately, in direct sunlight, it can very quickly get hotter than 60 degrees. The battery would overheat, and in the worst case it could even explode.
Heat build-up
The typical silicone covers that many manufacturers include with their devices should be removed in extreme temperatures: They prevent the heat in the device from being dissipated via the back. So don't be afraid to leave your cell phone "naked".
Battery heat
If the cell phone is already very warm and the battery is almost empty: first switch to flight mode and wait until the device has cooled down again before charging - charging would cause it to heat up further and eventually switch itself off.
Scratch alarm
After a trip to the beach, do not put your cell phone in your bag with the towel. Otherwise sand particles can scratch the surface. It is better to transport it separately and generally stick a protective film on it. Display polish from the drugstore can help with minor scratches. Otherwise: go straight to a specialist.
Water damage
Off to the pool or the sea? To keep your cell phone dry, use a waterproof case or alternatively a freezer bag with a zipper. This also prevents salt from building up in the openings in seawater.