Pretty sure iCloud has some features to wipe the phone and other stuff.
iCloud: Erase your device
This won't help you and I'm not that familiar with iPhone....
Cerberus App is better than all the other wipe and remote control apps from Google or Apple
Cerberus anti theft - official website
You can take pics, use the mic, record, get the call log and messages, track the phone, etc.
Someone takes your phone and you can start spying and tracking them in ways I haven't found any other app to do.