Sharing iPhone internet connection

[Tariel Gogoberidze]

Well, if you are developing in iOS and have apple developer certificate, it seems to be easy to avoid extra charge for tethering and make your own App that shares your iPhone internet connection though HTTP and a SOCKS proxy..

https://github.com/tcurdt/iProxy/wiki

Apple store will not accept such app, but you can use it for yourself and your  friends and  it's perfectly legal…

http://arstechnica.com/information-technology/2013/10/how-i-share-my-iphones-internet-connection-without-paying-verizon-extra/ 

regards
Tariel