Phone issues?

[Anabariez]

I was wondering what people think about this problem I've been experiencing, it has been happening for about 2 weeks now.

I have a the HTC incredible and usually my signal is so-so, but over the past 2 weeks my signal has been reliably bad. Between 9pm - 4 am to the dot, my signal goes all haywire. I've contacted Verizon and they say that they have no idea what's causing it.

My sister has a Motorola and she experiences none of these issues. I was wondering if there is a problem with HTC's getting signals in the country.