How long will the deleted information be kept on the phone or on the card?

Short messages are stored on the network for 48 hours. If the receiver does not turn on the phone within 48 hours, the system will delete it. The longest duration in a mobile phone refers to the longest duration set by the operator, which is 48 hours.

SMS messages are stored on the sim card. SIM card is responsible for providing users with a lot of commercial information, which can be used to store short messages received by mobile devices from the network, especially short messages received when users are away or leaving, and short messages initiated by mobile stations. The required capacity is 176 bytes.

A more specialized application is to store priority lists, subaddress identifiers, network/bearer identifiers, etc. Its required capacity is 14+X bytes. When multiple networks can be accessed, users can make choices. When the real-time charge notice appears on the Internet, the SIM card can remember this information, so that users can know their own charges at any time.