The phone can be upgraded to iOS15.7.4 or iOS15.7.5.

Both versions of iOS15.7.4 and iOS15.7.5 are optimized versions for Apple 7p, which can provide more stable and smooth performance. At the same time, these two versions also fixed some previously existing loopholes and bugs, improving the security and stability of the system.

The hardware configuration of Apple 7p is relatively old, and compared with the latest version of iOS system, the performance will be limited to a certain extent. Therefore, before upgrading, it is recommended to back up important data and carefully read the upgrade instructions and system requirements to ensure that your device meets the upgrade requirements.