Electronics Priced Right

The fastest chip on a spec sheet is not always the best for gaming. Here is how Snapdragon, Dimensity, Apple, and Tensor compare, why sustained performance and cooling matter, and how to keep a phone from overheating.

A refurbished phone can be a smart buy, but the seller matters more than the discount. Here is what warranty to expect, how to check the IMEI, and what battery health to insist on.

Do you need a case and a screen protector? Compare tempered glass and film, learn what to check for fingerprint sensors and magnets, and see tested picks for iPhone, Pixel, and Galaxy phones.

What drains a phone battery, which settings help most, how to charge for battery health, when a battery is worn out, and whether to replace the battery or the phone.

Wireless charging runs a little warmer than a cable, and heat is what wears batteries. Here is what the research shows, which settings protect your battery, and which wireless chargers are worth buying.