I am going to make the switch from an iPhone 4 to a Samsung galaxy S4 on e Verizon gets them in stock. My husband and two kids all have iPhones and the one thing I think I will miss is iMessage particularly the ability to see when they have read a message and being able to follow messages on my MacBook Air and iPad. Is there a comparable app on android that would accomplish this? Especially the "read" feature on messages. Finally, is there anything else app related that I should consider when all my other tech gadgets are Apple? Thanks!!!