I dropped 7 calls today with my Iphone 6 with full bars. This is a new phone (about 3 days old), and have never experienced this before. I called up T-Mobile, however they said they are not experiencing outage problems, so I am wondering if it could be the Phone? I have had T-Mobile for last 4 years and have not had a dropped call. Anyone else experiencing this with T-Mobile these past few days.