Methods and apparatus to obtain voice messages

1. A method implemented by a mobile device, comprising:

receiving at the mobile device an indication to access voicemail;

determining if a visual voicemail client is installed on the mobile device;

if the visual voicemail client is not installed, calling an audible-only telephone user interface (TUI) voicemail of a current line of a voicemail system; and

if the visual voicemail client is installed:

determining if visual voicemail is available prior to attempting to communicate with the voicemail system; and

initiating a call to the voicemail system in response to determining that visual voicemail is unavailable, wherein initiating a call comprises automatically initiating a call to access a telephone user interface for voicemail in response to determining that visual voicemail is unavailable.

2. The method of claim 1 , wherein the indication comprises a keypress.

3. The method of claim 1 , wherein determining if visual voicemail is available comprises determining if visual voicemail is supported on the current line selected on the mobile device.

4. The method of claim 1 , wherein determining if visual voicemail is available comprises determining if visual voicemail is defined on the mobile device.

5. The method of claim 4 , wherein determining if visual voicemail is defined is based on the MS ISDN of the mobile device.

6. The method of claim 1 , wherein determining if visual voicemail is available comprises determining if visual voicemail is activated on the mobile device.

7. The method of claim 1 , further comprising determining if visual voicemail is available comprises determining compliance with a policy on a server associated with the mobile device.

8. The method of claim 1 , wherein determining if visual voicemail is available comprises determining if visual voicemail is blocked on the mobile device.

9. The method claimed in claim 1 , wherein receiving at the mobile device an indication to access voicemail comprises receiving a user input associated with a request to access voicemail.

10. The method claimed in claim 9 , wherein the user input comprises a keypress associated with telephone user interface access to voicemail.

11. A mobile device comprising:

a housing;

a display carried by the housing;

a wireless receiver and transmitter carried by the housing; and

a processor carried by the housing, coupled to the wireless receiver and transmitter, and coupled to the display, the processor configured to:

receive at the mobile device an indication to access voicemail;

determine if a visual voicemail client is installed on the mobile device;

if the visual voicemail client is not installed, call an audible-only telephone user interface (TUI) voicemail of a current line of a voicemail system; and

if the visual voicemail client is installed:

determine if visual voicemail is available prior to attempting to communicate with a voicemail system; and

initiate a call to the voicemail system in response to determining that visual voicemail is unavailable, wherein initiating a call comprises automatically initiating a call to access a telephone user interface for voicemail in response to determining that visual voicemail is unavailable.

12. The mobile device of claim 11 , wherein the indication comprises a keypress.

13. The mobile device of claim 11 , wherein determining if visual voicemail is available comprises determining if visual voicemail is supported on the current line selected on the mobile device.

14. The mobile device of claim 11 , wherein determining if visual voicemail is available comprises determining if visual voicemail is defined on the mobile device.

15. The mobile device of claim 14 , wherein determining if visual voicemail is defined is based on the MS ISDN of the mobile device.

16. The mobile device of claim 11 , wherein determining if visual voicemail is available comprises determining if visual voicemail is activated on the mobile device.

17. The mobile device of claim 11 , further comprising determining if visual voicemail is available comprises determining compliance with a policy on a server associated with the mobile device.

18. The mobile device of claim 11 , wherein determining if visual voicemail is available comprises determining if visual voicemail is blocked on the mobile device.