How to restore the short message content?

Android (different versions may have different implementations) smartphones use Sqlite database to save short messages. Short messages are generally stored in the database file:/data/data/com.android.providers.telephony/databases/mmss.db. When your short messages disappear inexplicably or are indeed deleted, in the Sqlite file, Sqlite will modify the information in the CellPayload header in the CellContent area, and modify the index number of this CellPayload in the corresponding index (so the index is still there, but the index number is-1), so that the program can no longer read this information content. When this process just happened, the content of your message still exists, but the CellPayloadHeader and the corresponding CellPayloadIndex area of the message have been modified. At this time, you can traverse the short message through the recovery program (I did this) to get the index of the deleted short message, then reposition it, and finally manually recover the content of the short message. However, if this process continues for a period of time, Sqlite will shift the data and sort it out. At this time, your news is almost hopeless. Suggestion: 1. Copy the backup of your mmsmss. db file immediately, and don't let the mobile phone system operate this db file again. Ensured that Sqlite will not perform data offset processing on the file again. Suggestion: 2. Search professional Sqlite recovery software for recovery.