You can access your voicemail by calling *86 from your device or your 10-digit mobile number from another phone. In this case, press * immediately to interrupt the greeting and enter your password, then tap #.
The default voicemail password is the last 4-digits of your phone number.
Note: Visual voicemail is available for compatible iPhones and Samsung phones.
If you’re traveling and want to know how to access your voicemail from abroad, read here.