This to me looks like something your provider has added in to stop you getting free tethering on your data plan.

If you are rooted (which I assume you are as you are using a tethering app), then you can attempt to freeze the app that is responsible for this, using an app freezer such as App Quarantine ROOT.

If it isn't an app, then it may be part of the ROM directly, in which case you would have to install a custom ROM such as CyanogenMod. You should look at forums such as XDA-Developers to find a ROM for your device.

Using a custom ROM will definitely remove the message.

Getting rid of "Tethering Detected" popup on Android ICS 4.0?
In two previous questions, it was clearly agreed that hesitating before playing a singleton specifically, and hesitating during play as a bluff generally constitute "wrongful/unethical hesitation." As an advanced beginner, I don't understand this rule at all.

I know that at the highest level, the best way to play and not give away any information about your holding to the opponents is to play each card at a nice even tempo. I am not a world class player; I am not even an advanced player (if I endplay you, I promise it wasn't intentional). As such, I frequently need to pause and calculate what to play, even in situations where the correct play should be obvious. 

Knowing that I will inevitably need to pause and consider a play and that that pause will provide my opponents with the information that I had a potentially difficult decision to make, why is it considered unethical for me to occasionally insert a similar pause before a routine play?

It isn't as if I could use such a pause to reliably signal something to my partner. In fact, this strategy removes the temptation for partner to draw unauthorized inferences from my pauses.
