Turn it off before turning it on. Is there a message?

When you turn on your mobile phone within 48 hours, the message will be received. At present, all operators of China Mobile Telecom Unicom will store 48-hour receiving allowance for you in the core network. If you don't receive SMS for more than 48 hours due to power failure and no signal, it will be defined as junk data for cleaning.

When the mobile phone is in a normal state, it can't receive information in time due to reasons such as power off, out of service area, etc. , information storage time is as follows:

1. The storage time of point-to-point short messages in the network is 72 hours.

2. The SMS storage time of other operators is 48 hours.

3. The SMS storage time of Monternet SP, self-owned business, group answering customers and 10086 is 24 hours.

Extended data

Mobile phone signal is a kind of high-frequency electromagnetic wave, which is encrypted, loaded on the high-frequency electric wave generated by the mobile phone's own circuit, amplified by the power amplifier and sent to the nearest mobile base station through the antenna. The base station is connected to the switch in the computer room through wires.

Then the switch is connected to the nearest base station of another mobile phone through a wire, and the base station sends out a signal, which is received by another mobile phone through a channel, and the other mobile phone becomes sound waves after demodulation and decryption.

If the mobile phone has no signal, it will not receive the signal from the base station, and naturally there is no way to receive the information. So when the mobile phone can receive the signal, it will receive the signal from the base station, as well as text messages, phone calls and so on. You can receive it naturally.