I'm considering switching back and forth (keeping both) between an Android and my iPhone 6. My only obvious concern with this is iMessage causing texts to not work when I'm on the Android handset. My wife also has an iPhone. I've tried disabling iMessage on my iPhone (SIM is still in, it's still my only phone). But even after I do that, when she tries to text me, it's not getting to me. Does it take a while to de-register, and if so, how long should I reasonably wait for texts to start arriving as regular SMS?