Which is absolutely irrelevant. It's expected from a mobile phone to be able to send and receive SMSs. But SMSs can take several minutes to reach its destinatio

Which is absolutely irrelevant. It's expected from a mobile phone to be able to send and receive SMSs. But SMSs can take several minutes to reach its destination in some areas. Long messages are split. And the experience as a whole is totally different. And of course, most people pay per message (individually or as a pack), at least globally. So, if someone wishes to send a message, it shouldn't matter what OS or app is being used by the other party. IF GP uses an Android phone as its primary phone, it may be problem if he is trying to chat with someone who uses only iMessage.