The practice of bringing mobile devices into high-temperature, high-humidity environments like saunas is a consideration for modern device users. The electronic components within smartphones are sensitive to extreme temperatures and moisture. Introducing a phone into a sauna environment can potentially lead to damage due to overheating, condensation, and corrosion.
The potential consequences of exposing a smartphone to sauna conditions include reduced battery life, malfunction of internal components, and permanent device failure. Historically, electronic devices were not designed to withstand such harsh conditions, and while advancements have been made in weatherproofing and temperature resistance, saunas present a particularly challenging environment. The combination of heat and humidity exceeds the operating specifications of most consumer electronics.