640 XL LTE Dual Sim - lots of issues
I got my 640 XL LTE Dual sim about 3 days ago. So far, I'm less than impressed. Here's my major issues:
1. Battery life is deplorable, not even half what my 520 used to get
2. Wi-Fi seems to drop all the time when I'm on an open (aka public) network. (No problems on a secure network.)
3. It drops carrier connection about every 30 seconds.
I can cope with 1 & 2. I'm hoping 1 is caused by 3.
But number 3: I use T-Mobile and basically I get all bars and I watch it go from full bars to zero in about 20 seconds, then it reconnects again at full bars a second later, repeats. It randomly switches between "H" "H+" "4G" and "3G" within about a 2 minute period as well. T-Mobile is sending me a new sim, as they believe that is the cause, but I'm wondering otherwise. I'm going to try an AT&T sim later, but I never had issues like this (same sim) with my 520. It's also never once shown '4G LTE', even though I live in an urban area with 'great' coverage.
Anyone else experienced these three issues?