The voicemail on my iPhone used to work well, so basically if I click the
voicemail button on the interface of
Phoneapp, I would get a list of voicemail that I can choose from and listen to.
But recently, I found that whenever I click the voicemail button, I was transferred to a call as shown below and it looks pretty much like a virus to me.
Click the voicemail button on the lower right corner,
You will be automatically transferred to a call,
Is this a virus or some mis-configuration of my iPhone?