If you live in Iran and are MCI carrier subscriber and also you have an iPhone, you might ask yourself how to enable voicemail on your iPhone. I give you some quick steps to enable voicemail on your iPhone:

1. Click on Phone icon and then Keypad and dial *5005*86*09912#
2. Press call and wait.
3. Now you can access your voicemail box by tapping Voicemail in Phone.
4. To enable forwarding calls in various situations go to step 1 and dial these commands instead:
• Forwarding all calls to voicemail: *21*09912#
• Forwarding calls when your phone is busy: *67*09912#
• Forwarding calls when no reply from you: *61*09912#
• Forwarding calls when your phone is unreachable: *62*09912#

Please note that voicemail service should have been already activated on your account. It’s not activated by default when you purchase your SIM Card.