Calling A Number In A Message, Email, Or Calendar Event; Making An Emergency Call; Receiving Calls - HTC One M8 User Manual

99 Video chat and phone calls
4. On the Speed dial screen, choose the phone number of the contact to use, and a
speed dial key to assign.
5. Tap Save.
To use Speed dial, press and hold the speed dial number you want to call.
Calling a number in a message, email, or
calendar event
When you receive a text message, email, or calendar event that has a phone number
in it, you can just tap the number to place a call.

Making an emergency call

In some regions, you can make emergency calls from HTC One even if the nano SIM
card has been blocked or if you don't have one installed.
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.

Receiving calls

When you receive a phone call from a contact, the Incoming call screen appears.
HTC One will automatically adjust the ringtone volume when you use the polite
ringer and pocket mode features.
Answering or rejecting a call
Do one of the following:
§ If the display is on when you get a call, tap Answer or Decline.
§ If the display is locked when you get a call, drag
§ Press the POWER button twice to reject a call.
or upwards.