HHow do I reactivate when I find my phone
iPhone 6 Plus, iOS 9.3.3, Phone never lost
Posted on Jul 24, 2016 6:21 AM
Q: Recovered from find my phone
If you erased it, you can restore it from a backup from either iCloud or iTunes : Restore your iPhone, iPad, or iPod touch from a backup - Apple Support
If you locked it, simply switch off the passcode (If you desired to do that)