HTC One M8 - Manual (Page 89)

Returning a missed call
You'll see the missed call icon in the status bar when you miss a call.
1. Slide the Notifications panel open to check who the caller is.
2. To return the call, spread your two fingers on the missed call notification to
expand it, and then tap Call back.
If you have multiple missed calls, tap the missed calls notification to open the Call
History tab.
Using Speed dial
Use Speed dial to call a phone number with a single tap. For example, if you assign a
contact’s number to the number 2 key, you can just press and hold 2 to dial the
number.
The number 1 key is generally reserved for your voicemail. Press and hold this key
to call voicemail and retrieve your voicemail messages.
Assigning a speed dial key
1. Open the Phone app.
2. Tap > Speed dial > .
You can also press and hold an unassigned key on the dialpad, and then tap Yes.
3. Select a contact from the list.
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.
89 Phone calls