I'm thinking about switching back to AT&T from Verizon--I can't believe I'm considering this, as a couple years ago I went from terrible service on AT&T to great service on Verizon (mostly talking about consistent mobile hotspot performance while on a bus going from Greenwood to downtown in Seattle). But I've been experiencing more slowdowns/dropouts in recent months, and AT&T apparently improving, so thinking about switching back...(although there's also concern that AT&T has greatly slowed upgrading/expanding towers??) At any rate, when the iPhone 6 drops, I wonder whether buying the phone from AT&T vs Verizon would limit me in the future, eg inability to access LTE network of AT&T, Verizon, or T-mobile if I buy a phone from one carrier but change carriers in the future ability to swap SIM card with pre-paid T-mobile SIM to use in places where there is solid T-mobile service (?) inability to use the phone internationally in many places other considerations I might not know...? Also very interested in people's experience in Seattle on AT&T, especially if you take a bus between downtown Seattle and Phinney/Greenwood Thanks in advance for any thoughts.