*UPDATED* Can't find your phone? Phone in silent? No problem, just send an SMS containing "wakemeup" (without quotes). Phone will now be in normal mode at full volume. You can then ring your phone and find it.
Designed to have minimum number of blocks so that non-premium users can keep it running. Feel free to modify phone's response when the desired message is received.
Update1: removed inconvenience that can be caused by sending ''Wakemeup" instead of "wakemeup" (credits : Ferdi Kramer)
Update2: can now be used with online sms services also (credits : Elshad Safibayov)
Rate and review within the app in the Community section.