Method for blazing Speeds on ATT using Wimax.
As most using GS2 on Att the data speeds are poor.
I have mine on Att $50 prepaid unlimited all, using an infuse Imei.
Data speeds are still poor (avg 12-1500kbps).
ANY phone on Att "4G" performs poorly.
So, what I did (initially as a temporary measure) was get a Sprint MiFi portable hotspot ($35mo), carry with me and run off their 4G. (My work has me on the move around the chicago area...it's worth it).
I can tell you, data absolutely FLIES...(significantly better than the Evo 4g btw, as your at the mercy of tower positioning. The Evo on the Mifi performs way better also).
In the 10days I've had it, I've NEVER gone to 3G.
I'm considering just sticking with this arrangement when SGS2 breaks here if the phone's are dumbed down in any way. Good thing is the data reports to Att are virtually Zero on my dumbphone plan at 6-8M's/mo.....as I have unlimited data on Sprint.
So yeah its $85mo total for me.
SO, for those who really prioritize network speed (and why tether this brilliant device to a 3rd rate network), you might consider trying it for 30days. Don't need a current Sprint account.
Makes unlimited surfing and tethering movies etc fun again!
(suggestion tho if you do: have an extra phone and MiFi battery, and wall charger!).
Iphone, and 3G,
Htc Evo 3D
Samsung Galaxy S II 2
Epic 4G Touch
Samsung Galaxy Note