Step 1.Go to home page and tap Settings.
Step 2.Scroll down and tap General.
Step 3.Tap Cellular.
Step 4.Tap Cellular Data Network. Make sure ‘Cellular Data’ is ON.
Step 5.Under Cellular Data, tap the APN field and type in the APN parameter, tap the user name and password fields and type in the the right parameters.
Type in “Internet” in the APN field and leave the Username and Password fields blank. Often this is the default parameter settings used by operators.