Huawei Ascend G510 User Guide - Manual (Page 36)

Calls
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Setting up your voicemail
Apart from forwarding calls to another phone number, you can forward calls
(including the calls missed when you are on the phone or when your phone
is powered off) to your voicemail.
Before you use voicemail, make sure that you have subscribed to this
service and have obtained your voicemail number. For details, contact
your service provider. In addition, you must enable the call forwarding
function and set all incoming calls to be forwarded to your voicemail.
1. On the home screen, touch and then the All tab.
2. In the Apps area, touch Call.
3. Touch Voicemail > Voicemail settings > Voicemail number.
4. Enter your voicemail number and touch OK.
To listen to your voicemail messages, touch and hold the 1 key on the dialer.