My phone was lost
I lost my phone while I used find my phone. I erased it after more what should I do ? If I do not want other person use my phone .
If you erased it another person will need to enter your Apple ID password to activate the device.
You can no longer track it in Find My iPhone after erasing it and anyone who tries to use it will be unable to do so.
Obviously the device will need to get a signal from Apple to trigger the erase, that might happen if someone tries to use it & you had cellular data active.
Good luck.