If the phone is turned off, how long can I keep the received SMS?

When the mobile phone can't receive information in time due to reasons such as being turned off or not in service area under normal circumstances, the storage time of information 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, its own business, group customers and 10086 is 24 hours.