When group texting, I receive messages anywhere from 3-15 minutes late. When I try to reply the conversation has passed, very aggravating. I group text very frequently. I have cleared my cache and factory reset my phone and still have the same issues. I have tried 3rd party apps but the same thing happens. All my friends use the messaging app that came with our phones and have no problem. I have the S5 and it is up to date with the Lollipop 5.0. Can anyone help