Noticing a similar issue on AT&T with an iphone 7+ vs an iphone 6. In field test mode in the same location, both fully charged, the iphone 6 is 1 dot and about 30 points better on reception than the iphone 7+. -68 vs -96 if anyone cares for the actual numbers (closer to 0 the better, but closer to -50 is really what you're shooting for.) Hoping its a software / carrier issue and not a hardware issue as I like the phone a lot.