Device guides for

Apple iPhone 4S (iOS5)

Most searched guides

Choosing a message tone for my mobile phone Connecting my mobile phone to Wi-Fi network Writing and sending SMS Turning use of phone lock code on my mobile phone on or off

Getting started

Basic functions

Calls and contacts

Messaging

Office and leisure

Connectivity

Global online services

Troubleshooting

Specifications

Updating the software on my mobile phone

Want to update the software on your mobile phone? It's easy, but first you need to install iTunes on your computer before you can update the software on your mobile phone. You can download the program from www.itunes.com. It's also recommended you back up the phone memory before you start.