Mine does this exact same thing. As does my S/O’s.

My iPhone 7 Plus has been dropping cell signal like crazy. It will drop for a minute or so, cycle through 1x, 3g, then LTE and all is well again. It does this about 2 or 3 times a day. I would think it was something I did, but I have reset it, taken out the sim card, and restored it through itunes. Also of note, my…