If you need or want to use your iPhone 4 as a modem you need to set some simple adjustments and so we can provide this very useful to your apple cell.
What we have to activate the tethering, which is the process by which a iPhone 4 Internet connection acts as a gateway for wireless access to the network to other devices.
To activate this option just to go to Settings> General> Network> Internet Sharing, and the latter option is what we must activate, and which by default is "Off." Later you can connect your iPhone to our PC or laptop where to install a new connection called Apple Mobile Device Internet.
We can also make a connection using Bluetooth technology to link up with the device so i use our iPhone 4 how modem. All you have to consider is your data plan so you will not be excessively expensive.
