Sharing ipad internet with iphone 4s
How i want connect iphone 4s to ipad 2 internet?
If your iPhone carrier supports it (and it may be an additional fee/subscription) then you should be able to use phone's personal hotspot function to share its connection with the iPad - the iPad will see the phone as a wifi network.
If you want to do the sharing from the iPad to the iPhone, then the iPad 2 doesn't support the sharing of its connection to other devices/computers.