by Open Garden
Download this app if: you want to share your mobile Internet connection across all your devices.
Open Garden shares Internet connections between laptops, tablets and phones. No root access is required. It is similar to a Wi-Fi hotspot, but it uses Bluetooth and Wi-Fi Direct.
To use it, install it on both your phone and your tablet, so they can connect.
If it is "not available on your...
Potential growth — Seems like this has lots of potential. Just hope the carriers don't clamp down on it. It's like tethering but without the cost/issues surrounding that.