I guess I've been lucky so far, my 6120 has been flawless with both 188.8.131.52 and 184.108.40.206. Hopefully 220.127.116.11 resolves the issues other people are having, I can imagine how frustrating it is
Ah, very interesting discovery. I was tracking that thread earlier but hadn't read the last couple weeks of posts. That reminds me of an issue I had earlier this month while staying in Las Vegas for a week. My phone was on LTE most of the time (voice calls made it hand off to HSPA). Any time the phone was on LTE, it caused interference on certain TV channels (starting at 6 and roughly every 5-6 thereafter). Having the phone idle on the desk a few feet away caused occasional stuttering/tiling whenever it chirped at the tower, while doing a speedtest killed it completely. Even standing in the far corner of the bathroom (~18 ft, one wall) caused it to drop out.
The last night I was there, I ended up testing every single channel, writing down which ones were fine and which ones had issues, and reported it to the hotel service desk when I checked out. Hopefully they do something about it. I have no idea if the interference spread to adjacent rooms.
Verizon just turned on LTE service in my town, but our system here is on 549-597 MHz, so we should be spared of similar problems.--