As much I want to love the S4, this thing can't group text smoothly and the MMS is super choppy. It can't even automatically resize a saved GIF to send to a friend! Always stating the file is too large! I can't believe Samnsung put all this technology into the phone but blew the entire sms/mms sector. If anyone has better experience please explain, maybe my phone is defective. I really want to keep the phone but I need my group text to work seamlessly. And yes I have tried third party apps such as GoSMS Pro and Handacent. I have 14 days to decide if I'm going back to the iPhone