This is well-known. I'm curious to know how they get the IMEI on iOS cause there isn't a public API but only an undocumented method on the CoreTelephony.framewo

This is well-known. I'm curious to know how they get the IMEI on iOS cause there isn't a public API but only an undocumented method on the CoreTelephony.framework. Using a private method is one of the easiest ways to be banned from the App Store. BTW on January 13, 2012, Whatsapp was pulled from the iOS App Store for 4 days. I think they were pardoned by Apple because of the popularity of the application.