Hello,
you can't turn on your phone remotely. however - I can recommend two things:
- send a command SMS to your phone from a close friend's/family member's phone. send "2222 locate" (replace 2222 with own avast! PIN). if the phone is found and turned on, the command will be received by your phone and it will answer (provided that you turned off the SIM PIN protection - if the phone asks for the SIM PIN, it can't receive it)
- regularily check with the person who's phone number you set as "friend". if the phone is found and sim card replaced, he/she will receive a sms with the location info and the new phone number
hope you'll find your phone,
Werner