iPhone 5 AT&T Bad IMEI

[dubblez]

Hi there,
I was wondering if an iPhone I buy off eBay for much cheaper that has a bad IMEI for AT&T, would work on the T-Mobile network? Simple Question, doesn't seem to be many straight answers out there, thanks!

 

[te100]

my guess from what i researched If its got a bad imei then it will be blocked from all networks.