Change your ring tone
1.Press Start 
, and then tap Phone.
2.Tap Menu > Options.
3.On the Sounds page, in the Ring type list, select a ring type.
4.In the Ring tone list, select a ring tone.
Note: After you select a ring tone, you can tap the play button to hear it.
5.Tap OK.
Tip: Additional notifications can be
changed by pressing Start 
, and then tap Settings > Sounds
& Notifications.
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