[T-Mobile LG G2x] crockashat:
I got the "tethering function blocked" text message from T-mobile yesterday. This is the first time I have seen this and I did STFA before randomly posting. Now true this is the first time I have done tethering on the upgraded Gingerbread OS (currently running the rooted GB Weapon 3.0 ROM) all previous times I tethered were on the Rooted Froyo OS. I also noticed that after receiving this text message when I tried to use the internet browser on the device tethered to the phone I was directed to a T-mobile page stating that tethering was blocked and if I wanted it, it was an additional $15USD monthly cost.

Yes it appears that all the provider's (US= ATT, Tmbl, VW, Sprint) are now actively clamping down on devices tethering without a tethering plan included (probably hitting the large Metro-areas first -- I was in Houston when it happened = #4 largest), how exactly they know it is happening, I don't know.

I have seen where others have made comments about this but they were at or above the 2GB monthly limit. When I got this message from T-mobile I had used 400 megs of my 2GB allotment for the month, so I was nowhere near the cap.

Anybody know exactly how T-mobile is blocking this feature on rooted phones?? is it done on the T-mobile servers, does it send some data packet that alters files in the Android OS or does it alter the SIM chip files???

Has something changed in the Android OS (some sort of tattle-tale) or does T-Mobile have some new capability that can "sniff out" whether or not you are using the tethering option on your phone without enrolling in there "enable tethering capability" feature for a mere $15USD monthly of extortion? Say what you will, but I do not see where I should have to pay extra to tether a device to my data plan if I am below my allotted data usage per month, and no I have never exceeded the 2GB limit during my contract.

I saw a post about EasyTether, which says that it has a way to mask its operation (utilizing the same ports as the cell phone does for data ?????) so that the carrier cannot tell that the tethering option is being utilized. But it appears that it only works for USB, not for WiFi. For me tethering is about 50/50 -- for PC's I use the USB, for my tablets I use WiFi. So is there an app, driver, etc that works for both, or a way I can apply an update, edit a file, etc. to get the USB and WiFi tethering option to function properly without T-Mobile trying to extort me for more money every month??

I have seen the links that say to change (or use add-ins that will change) the web browser user strings, and did not find a consensus that this truly works.

I found links that mention freezing the Tethering Manager App (do search for -- How to Get Free Wifi Tether on Rooted T-Mobile Galaxy S2 on youtube and you can see the clip), which I would try if I could find the App. I have refreshed the Apps list in Titanium Backup and searched for a reference to this App (is it possibly named something different for the G2x running a Froyo or Gingerbread based ROM?) and no luck, I did not find it in either ROM so at this point I am not sure what to do.

any help on this subject is appreciated