Regarding the issue of whether smartphones are allowed in salt steam rooms, there are varying opinions and suggestions.

**The Viewpoint on Carrying Cell Phones**

1. **Personal Habits and Convenience**: Some believe using mobile phones in salt steam rooms is a matter of personal habit. As long as safety is ensured and it doesn't disturb others, it's fine to bring a phone inside.

2. **Support for Modern Facilities**: Some have noted that modern steam rooms typically offer seating and power outlets, making it convenient for guests to use electronic devices, including cell phones.

**The View Against Carrying Mobile Phones**

**Safety Concerns**: As an electronic device, mobile phones may pose a risk of explosion or electric shock in high-temperature and high-humidity environments. Although the probability is relatively low, many people still advise against bringing mobile phones into salt steam rooms for safety reasons.

2. **Impact on Experience and Device Lifespan**: Using a phone in a salt steam room may damage it due to high temperatures, humidity, and potential condensation. Furthermore, using a phone may distract from relaxation and enjoyment of the salt steam experience.

3. **Health Concerns**: While phones themselves do not emit harmful radiation, prolonged use in confined spaces may increase the risk of radiation exposure. Additionally, using a phone can also impact sleep quality, particularly if it's used before bedtime.

In summary, while some may opt to bring their phones into the salt steam room for personal convenience, safety, health, and the overall experience suggest against using them inside. If you must bring your phone into the salt steam room, please ensure safety by avoiding exposing it to high temperatures and humidity, and try to minimize usage time.