With additional improvements, this is a complete tether solution of sharing phone Internet with computers or tablets.
PdaNet+ supports USB, Bluetooth and WiFi. USB mode works for all Android phones. FoxFi/WiFi mode only works on some phones. Please see the supported list at http://pdanet.co/devices
Free edition of PdaNet+ will require you to turn back on after some usage, otherwise it is same as full version.