Advanced Data Protection still on if I have an old iPhone lost without being updated to 16.2?

Iustin_Ac wrote:

Almost 5 years ago I lost my iPhone XS. Later, Advanced Data Protection came out and I activated it. The lost iPhone XS was not updated to iOS 16.2 (the one that’s introduced Advanced Data Protection). This phone still appears in “Find my” and I flagged it as lost but it does not appear in my iCloud devices list.

Is this a security breach ? Is Advanced Data Protection protecting my iCloud info if one device is not updated?

The four to six digit passcode you set up on your XS is protecting your phone assuming you didn't set up an easy combination of numbers.