Why can't the weather be refreshed with today's headlines?

4G usage conditions: 1, and the mobile phone supports the operator's 4G network frequency band; 2. The mobile phone card supports 4G. 3. There is 4G network signal coverage in the local area. 4. Is the 4G switch on? Without the 4G solution: 1, the mobile phone may not update the mobile network settings, so the mobile phone should update it when prompted to update. 2. The mobile phone card is opened for 4G, and the 4G package is opened. 3. If there is no local 4G network or the 4G data signal is poor, there is no way out. 4. Turn on the 4G switch.