Boiling water in a microwave generally does not directly damage nearby electronics like phones and tablets. Microwaves emit electromagnetic radiation, specifically in the microwave frequency range, which is designed to heat food and liquids by agitating water molecules. However, the radiation emitted by a microwave is contained within the microwave oven itself and does not typically extend beyond its walls.
As a precaution, it's generally recommended to maintain a safe distance between electronic devices and a running microwave. This is to prevent any potential interference or damage that may occur due to the electromagnetic radiation emitted by the microwave. Additionally, electronic devices can be sensitive to heat, so it's advisable to keep them away from excessive heat sources.
If you are using a microwave in a normal household setting, it is unlikely that the radiation or the heat produced during boiling water would cause any harm to nearby electronics. However, it's always a good idea to exercise caution and follow the manufacturer's guidelines for both the microwave oven and the electronic devices in order to ensure their proper functioning and safety.