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Verizon and at&t are blocking tether apps in the market. Not saying sprint will but you may want to grab a copy and back it up just in case

Exactly. The truly unlimited sprint plans will not last forever, and the claim ( I don't actually know if it's still true) that they are the cheapest provider will not last forever either.This is still pretty interesting, though. It seems like between caps and throttling they would not need to block these apps, but this is definitely the trend. I wonder how long it will take before Sprint gives into these types of activities. I know they pride themselves on "truly unlimited" everything, but it seems they can't hold out forever.
anyone know what mechanism they are using to block the apps? Is it:
1) you can't even find the apps when searching for it?
2) you aren't allowed to download it?
3) you aren't allowed to run the tethering app?
4) you can run it but the tethering doesn't work?
Carriers crack down on Android tethering apps, rain on our mobile hotspot parade -- Engadget
Here is the engadget link that talks a bit about this. It does not clarify 100% how they are being blocked, but it sounds like they are just being removed from the market from certain carriers. In the comments people seem to be saying that you can still just download the .apk and install it yourself.
I just switched over to evo from iphone because ATT bites. I had unlimited data plan, jailbroken phone with mywi. They didn't even HAVE a tethering option until this year. Then they started sending messages out to everyone using mywi that if they continued to tether without a plan they would be automaticly switched, get this, from unlimited data at $30 an month to 4g capped for $45 a month! They mean't it too. They can track tethering somehow. I ignored them until they let me know my plan was scheduled to be changed, then the next day I switched. Even with Sprints hotspot plan, my bill is a little cheaper than before.
I"m paying now, until I learn a little about rooting.
If you plan to tether a lot, I would recommend paying for the hot spot.I"m paying now, until I learn a little about rooting.