Sony has started to push the system upgrade of Android 6.0 for its mobile phones in 2016. It was a happy thing, but when many users upgraded Android 6.0, they found that the STAMINA power-saving mode they had used for many years was reduced. It is said that the Android 6.0 system has its own Doze power saving mode, which will conflict with the STAMINA power saving mode. This is not good news. The STAMINA power-saving mode can be said to be the system's own power-saving mode that appeared earlier in the Android system and has excellent functions and effects. It can set the app white list according to the user's preferences. Apps not in the white list will be disconnected from the network after the screen is closed for a certain time, so that the system can maintain deep sleep in the silent screen state. The majority of French fans also regard this as a major selling point of Sony's mobile phones to promote, and it is no wonder that users are not happy to remove it immediately. Sony also obviously heard the public's voice, saying that it would push the system updates that returned to the STAMINA power saving mode for those who participated in the Xperia Beta program. If there are users who participate in this program, remember to pay attention to the system push.