Making an emergency call
In some regions, you can make emergency calls from HTC One max even if
you don’t have a micro SIM card installed or your micro SIM card has been
blocked.
If you don't have a network signal, you won't be able to make an
emergency call.
1. Open the Phone app.
2. Dial the emergency number for your locale, and then tap Call.
If you've enabled but forgotten your lock password or lock
pattern, you can still make emergency calls by tapping Emergency
call on the screen.
140 Phone calls