What's worse is that Apple iMessage servers seem to cache your phone number for a long time too... Even new message threads from my friends were trying to send

What's worse is that Apple iMessage servers seem to cache your phone number for a long time too... Even new message threads from my friends were trying to send as iMessage, even long after I got rid of my iPhone, disabled iMessage everywhere, and deleted any association of my phone number I could find. (I too switched from iOS to Android.) I find this crazy, that Apple lock you in like that.