I switched from iphone 4S to the Huawei P1 LTE.... Honestly.... my experience with this phone is so much better.
It has a much more consistent 3G connectivity as compared to my iphone which is almost always a small circle.
Much less dropped calls.
Only thing is the branding and the lack of accessories......
As for support, no idea yet.
Pros:
Probably the cheapest 4G phone you can find.
Uses normal simcard (not micro sim, not nano sim)
Near unmodified stock android
Micro SD slot supporting up to 64GB
Very fast connectivity (when using USB tethering).
Manageable size, you can do messaging with one hand quite easily...
Removable batteries, you can buy spare batteries for backup.
Cons:
a bit unresponsive when dragging down the notification page.
Wifi tethering takes quite a long time to activate.
Wifi is not dual band (not a big issue, most smart phones do not anyway)
No announcement of jelly bean update.
Not sure if its a phone wifi issue, on my 50mbps fiber network, i clock a alittle bit more than 50 mbps on my pc, but on the the huawei phone, it clocks less than 10mbps.