I don't find anti-theft Android application, that would work against thieves:
- that can install new ROM,
- that can to make Hard Reset.
2. Expected behavior
- Not a big price; ideally, if gratis;
- Android 5.1.1 compatible;
- User can get location of smartphone, use remote access;
- Blocking smartphone and notice to another phone, if SIM card changing;
- Protection, if thief install a new ROM (for example, Anti-Theft disallow USB debugging and entering in Recovery mode);
- Anti-Theft not deleted, if thief make hard reset/factory reset;
- Autostart by smartphone start;
- Not killing program process, if user use task killers;
- Not attracting attention is the name of the program in lists of programs; ideally — possibility of custom name.
2. Desirable requirements
- Active development;
- Notice with smartphone location to another phone before Anti-Theft deleting;
- Not attracting attention is the name of the process in process managers; ideally — possibility of custom name.
- Remote access to front camera photo and audio of smartphone.