When in a group text regardless of it's with apple or samsung users my text messages take 20 mins to go through. I've reset network setting done a compete factory reset and a sim card change and still having issues. I have also tried the stock messaging app and google messages with no difference.
Also my notification bar will pull down randomly without touching it.
And while on speaker phone and multitasking within the device it brings me back to call without prompting it.