I don't get signal inside the building at work, so I either turn it off or put it in airplane mode until my shift is finished. When I turn the phone back on outside, I used to receive the past texts in about 5 min with my Razr Maxx HD. With the Moto Z Play, it takes a couple hours for the texts to arrive. And when they do, they all arrive at once, regardless of when they were sent to me. With the Razr, the texts used to arrive in the order they were sent. This happens with both wifi and phone signal.