It's not affected by where my phone is in my room. It's just as bad (or great, depending on the time) when my phone is on my bed, on top of my laptop, or I'm holding it in my hand standing up.
And I used Lightning to USB to my computer directly to eliminate the possibility of WiFi being a problem; I've had terrible speeds over USB tethering (and directly on the phone with speedtest.net, too!) during prime time.
@DragonLord I don't really have any other good choices. Every Comcast customer I know in my area says they're crap. Peak speeds are alright, but it's far too easy to lose connection, and when you lose connection, you lose it - it's gone for a good period of time. LTE, at least, when it drops out, is usually for only a minute or two at most, and most times when it "drops out" it's only 1 or 2 seconds.
Things like rain, mild wind, someone driving down the street, etc. can disrupt cable in this area. The infrastructure is very, very poorly maintained.
FiOS never came, so that's out. It's between cable and DSL.
If Comcast could deliver just half of their promised 105 Mbps on a consistent basis, and have a 99.5% uptime or so, I'd push to get that at home instead of unlimited LTE. But everyone I've spoken to has said their uptime is closer to 95%, some even worse than that.
And they oversell so much that speeds during prime time are a tiny, tiny fraction of that 105 Mbps. Probably not terribly faster than LTE.
Also, I've eliminated the possibility that I'm being singled out and throttled, because if I were being throttled, they'd be consistent once I used a huge amount of data in a month - but I've received fantastic speeds at off-peak hours (e.g. 3 AM) on the last few days of my billing cycle when my monthly usage is horrendous.
Got 30 Mbps on a Steam game download the other night
But in about an hour and a half I'll be getting MAYBE 1 Megabit, until about 4 hours after the peak starts.
I'm getting 10 Megabit right now. The peak hasn't yet begun. But it's coming.