Intermittent loss of cellular connection

Just replaced charging board on this moto g power for obvious reasons. EZPZ. Immediately after, I began experiencing intermittent losses of my cellular connection. This is the second time in a row. Had an E6 before this with an identical issue. That solution was this new phone as I was working and had no time to fuss. Here, at first I wasn't sure bout the white wire, but I've made sure both antenna connections are snapped in and charging now works perfectly. I have restarted the device. Easy repairs, WTF? Help?

Tyvm.