[kazazes]

The existing Android solution only works for Qualcomm chipsets [1], so it must require some radio-level access to verify the presence of an IMEI device. You won't be seeing it in the iOS App Store. Maybe someone can find the relevant private APIs to make it happen.

http://www.slate.com/blogs/future_tense/2014/12/31/snoopsnit...

[toomuchtodo]

Preventing an iPhone from downgrading to 2G (as a user-configurable option) would solve the problem. 3G/4G/LTE prevents spoofed tower issues.