This tutorial is written for those who are not familiar with Ubuntu/Linux and is very detailed. If you are experienced feel free to just grab what you need from it.If youâ€™re like me you have an iPhone and a portable computer running Ubuntu and you would like to have mobile internet without paying for an extra data plan from
your carrier. Thanks to a few devoted individuals tethering the iPhone to Ubuntu is simple. The only prerequisite is that you must have an iPhone 3G or 3GS running OS 3.0 or higher. If youâ€™re running 3.0 then you can do this without jail breaking your phone by installing a modified carrier profile. However, if youâ€™re on OS 3.1+ then you will need to jail break your phone to install the modified carrier profile.