Learn how to use the speed dial on your HTC One. Use Speed dial to call a phone number with a single tap. For example, if you assign a contacts number to the number 2 key, you can just press and hold 2 to dial the number.

Note: The number 1 key is generally reserved for your voicemail. Press and hold this key to call voicemail and retrieve your voicemail messages.

How to assign a speed dial key on HTC One

• Open the Phone app.
• Tap Menu icon > Speed dial > + add icon.

Note: You can also press and hold an unassigned key on the dialpad, and then tap Yes.

• Select a contact from the list.
• On the Speed dial screen, choose the phone number of the contact to use, and a speed dial key to assign.
• Tap Save.