'''Just follow the below mentioned simple steps, if you wish to activate the iPhone:'''
-First insert the activated as well as the compatible SIM Card (for iPhone 3GS) or the micro-SIM Card (for iPhone 4 as well as iPhone 4S) into the device.
-To Switch On your iPhone, press and hold the On/Off button just for few seconds. After that carefully follow all the instructions which are there onscreen in order to activate as well as to set up the device.
-And you can also use the option of using ‘iTunes’ to finish your activation.
-Just connect your iPhone device to a USB 2.0 port on your PC or Mac via the USB Cable or the Dock Connector which comes with the device. ‘iTunes’ will automatically open-up.
-After that, carefully follow all the instructions which are there onscreen in the ‘iTunes’.
-Now to use ‘iTunes’, just ensure that your PC is linked with the internet while you activate your device, either via any direct connection or a Wi-Fi network to the router or your Ethernet network.
-And in case it’s not linked with internet, you won’t be able to activate your device successfully.
If after following the above steps your iphone still not get activated then you call Apple Customers Services [http://www.qwiknumbers.com/apple-contact-number|here].