Root Cause:
When 4G signals are weak, switching back and forth between networks may cause high power consumption and affect standby time.
Solution:
When the 4G signal is weak, you are recommended to turn off the 4G switch to improve the standby time. When the 4G signal is weak, the network will switch back and forth in the 4G/3G/2G, causing high power consumption and affecting the standby time.
According to the requirements of mobile operators, when your mobile phone is a customized one or a mobile card is set as the primary card, you cannot select the network mode. For details, refer to the actual display of the device.