Rooting a phone for an average user can provide the following benefits:

1. Removing pre-installed applications (bloatware) from the manufacturer or carrier that cannot be uninstalled through regular means.
2. Boosting performance and battery life through tweaks or using apps that require root permissions.
3. Updating to newer Android versions through custom ROMs when official updates are not available.
4. Customizing the appearance and features of the phone using custom themes, icons, and apps that require root permissions.
5. Backing up the entire system and apps, including data that cannot be backed up without root access.

DATA RECOVERY
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Rooting a phone from a data recovery and salvage perspective:

1. Accessing system folders and files that are normally inaccessible, potentially allowing the recovery of deleted or lost files (more theoretical than practical).
2. Using specialized data recovery tools that require root permissions.
3. Gaining access to encrypted data that would otherwise be unavailable.
4. Performing low-level backups and restores, which can be helpful in case of severe system issues.

Keep in mind that rooting a phone may void its warranty and cause system instability or data loss if not done correctly. Therefore, it is essential to carefully weigh the potential risks and benefits before modifying your phone's software.