Apple has always tried to port its in-house applications to other OS platforms. Apple Music debuted on its rival mobile OS platform last year with the launch of Apple Music on Android. Tim Cook reportedly told his staff that sooner Apple may bring other apps and exclusive services to the Android Systems. iMessage uses end-to-end encryption that even Apple or anyone else can not access or read your messages, but what we don’t know is backed up messages to Apple’s iCloud service are vulnerable to federal warrants.
Source: https://thehackernews.com/2016/02/apple-iMessage-for-android.html