iPhone 4 Phone App showing red spot, how can I get rid of it?

[iMore Question]

iPhone 4 Phone App showing red spot

Would appear to be similar to voicemail notification, but has no number. I have no voicemails and red spot will not be deleted when pressing 3 button. How do I delete it. When I have a voicemail the app shows a red spot with 1+

 

[Ledsteplin]

Re: iPhone 4 Phone App showing red spot

If you?ve recently made a change to your iPhone service or SIM card, you may notice a mysterious red blank dot on the ?Phone? app of the iPhone home screen. Typically that little blank red dot means you have voicemail, but the iPhone can?t retrieve it, and it usually occurs in one of the following scenarios: the iPhone has just been restored or reset, the iPhone has a new SIM card inserted into it with a different phone number or service plan, or the associated phone voicemail password has been changed.