iPhone 4S users can connect to a WiFi network using the options provided as part of the settings screen. Listed below are the steps for joining to WiFi network.
Step 1: Press the menu button on iPhone 4S and tap the Settings icon.
Step 2: Tap Wi-Fi option in the Settings screen.Step 3: From the list of available network, select the network to which you want to join.
Step 4: If prompted for password, then enter the required details and tap the Join button. By this way you can connect to a Wi-Fi network using iPhone 4S.
Removing Wi-Fi network from iPhone 4S
If any configured Wi-Fi network connection is not required and or you have problem connecting to the network using iPhone 4S then you can try deleting the connection. Tap the Wi-Fi network that you want to remove from iPhone then tap the Forget this Network. This would clear all the details about the Wi-Fi network from the iPhone.