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Set DTMF Tones 
You can set the length of Dual-tone multi-frequency (DTMF) 
signal tones. 
1.  Touch the Home Key >    > Menu Key > Settings > 
DTMF tones. 
2.  Touch Normal or Long. 
Set Speed Dials 
You can touch and hold the 1 ~ 9 key from the dialer to call the 
corresponding speed dial number. 
The number key 1 is reserved to speed dial your voicemail. 
To assign a speed dial key: 
1.  Touch the Home Key >    > Menu Key > Settings > 
Speed dial. 
2.  Touch a speed dial key. 
3.  Enter a phone number or select one from the contact list. 
4.  Touch OK. 
Use Wi-Fi Calling 
With Wi-Fi Calling you can send and receive calls and messages 
over a Wi-Fi network using your existing T-Mobile service. Touch 
the Home Key >    > Menu Key > Settings > Wi-Fi Calling > 
Help or contact MetroPCS for details.