Why can't I delete the text messages on my iPhone4? How can I restore them?

You can use this software to get it back. North Asia Apple mobile phone data recovery software-iPhone V1.0 version From Byte Recovery mainly supports the record-level data recovery of SMS, address book, call record, QQ chat record and WeChat (only for IOS platform) on iPhone platform.

Software introduction: The principle of this software is to restore the records of sqlite data table according to the storage characteristics of sqlite database. Generally, for efficient processing, the SQLITE database engine will not reclaim space when deleting records in some cases, which makes data recovery possible. Meanwhile, online logs of sqlite. Wal also buffers a large number of operation pages, which may also contain previously deleted data records.

For the ios platform, if the device has escaped from prison, you can read the SQLITE database corresponding to SMS and QQ records through tools such as 9 1 mobile assistant, and then analyze and recover the database files. You can also load the custom boot code in DFU mode, mirror and extract files from the rom of the mobile phone (the specific version is limited at present). Or data recovery through the backup folder of iTunes (without jailbreaking).

After testing, some records can be recovered, but some deleted records cannot be recovered, because some records will be reused because of data overwrite or database shrinkage. Theoretically, these records no longer exist, so they cannot be recovered.