Turn on flight mode without turning off the phone, and the radiation of the mobile phone immediately drops to a very low level. The most important thing is, take the mobile phone to do the alarm clock’s small partner to be able to safely put in the pillow! < / P > < p > when you have to read some documents or watch videos, you suddenly find that there is a small amount of electricity left on your mobile phone and there is no charger. What should I do? Turn on flight mode! < / P > < p > this is especially important when traveling! In the case of forgetting to apply for the roaming package or not purchasing the local traffic card, it is recommended to turn on the flight mode first and then connect to the Wi Fi of the hotel, which can avoid the roaming fees due to the foreign places! < / P > < p > although all networks will be automatically disconnected when the flight mode is turned on, you can also manually turn on WiFi again, so that the Internet and playing games will not be disturbed by the phone. Huawei has finally made a choice! Xiaomi and ov have also followed up. Have you ever thought about today?