I have T-Mobile and had my 7 Plus delivered on launch day. I'll be honest. I don't use my phone that often as a phone. Since getting my 7 Plus on launch day I've used it maybe 3 times from home as a phone. Today was the first time I've used it from work to make a call. On all my previous devices, going back to 5s, the calls were perfect from work. However on 2 different calls today it cut out non-stop to the point of having to end both phone calls. I'm getting the same signal strength (looking at bars only not DB). I'm not in too densely an area. Meaning, I'm not in an area Pasadena for work with thousands of others tightly packed in. I'm in a large city but not as packed in. Anyone else have issues with the actual phone on their 7 plus?