I had a call come up as 'no id' on my cell phone caller id. does anyone know what would cause this? I know that blocking the number causes it to come up 'restricted' sometimes, unavailable. i've never had a 'no id' message before.

any ideas? it's bugging the crap out of me. by the way, i have verizon if it matters.

See More: 'no id' pops up in caller id box?