To be truthful the FCC should have forced apple to move off iMessages. Especially due to them registering numbers which they shouldn't have control over. Friend got a new number recently when they changed providers, the new number of course didn't work for any messages that came from iPhones because it was previously used by an Apple user.
So essentially someone buys a service from Company A. Puts it in their hardware from Company B, yet company C is dictating their ability to recieve messages. The user did this ~June 15th, didnt figure out iPhones weren't able to send her messages to June 20th. So her birthday was June 18th, the same day as fathers day. Most plans almost fell through because her dads iPhone just lies and says the iMessage is read immediately.
There really should just be a class action lawsuit against Apple that requires them to stop hijacking services from users that are not their customers.
Sidenote: Apple's first solution they provide for this is to move your sim card to one of their products to deregister from their services. That is so fucking disgusting to me. Thankfully the site now has a "No longer have your old device option" to de-register from the servoce you never signed up for... on a product you never owned.
...end rant, sry