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• Connect your iPhone to a USB port on your computer (but not on the keyboard) using the dock and cable in the box. iTunes will open automatically.
  
• iTunes will guide you through activating and syncing things like contacts and podcasts.

Once you've got the latest OS software from iTunes, you'll need to re-enter the Pay & Go APN settings on your iPhone.

Here's how:

Click here for a step-by-step guide of how to change your settings, follow the below steps.

Go to the settings menu and choose General

• Choose Network, then Cellular Data Network
• In the Cellular Data APN box, change idata.o2.co.uk to payandgo.o2.co.uk – you don't need to change the username and password
• In the MMS APN box, change idata.o2.co.uk to payandgo.o2.co.uk – again, don't change the username or password
• Ignore the Visual Voicemail APN box – it's not available on Pay & Go
• Turn your iPhone off and on again
• Text keyword "MMS" to 1010 for free.  We'll set up picture messaging and let you know when it's done.

If you've got a 2G iPhone, you won't be able to send picture messages. But we'll send you a text message with a link so you can view them.

To find the software version of your phone either, Synchronise your handset with iTunes and the software version will appear on the 'Summary' screen or

1. Tap 'Settings'.
2. Tap 'General'
3. Tap 'About'. 

The simplest and quickest way to update the software on your phone is through your internet browser. You don’t need to install the BlackBerry Desktop Manager software anymore. This new way of upgrading works for all current phones, and most previous phones.

All you need is a PC connected to the internet and a USB cable to connect your BlackBerry to your PC.

Once your phone is connected please go to www.blackberry.co.uk/update and follow the instructions. You will be presented with a recommended software option to upgrade your phone if an upgrade is available. If you wish to downgrade the software on your phone you will need to select “View Other Versions” and then select a software version to downgrade to. For example if downgrading from v6.0 to v5.0 software please select the v5.0 software with the highest version number. The upgrade will take about 45 minutes. During the software upgrade process your phones data will be backed up and restored once the update is complete.

There are a few different ways of updating the software on your phone. O2 recommends and suggests Web Software Loading (WebSL) is used as it works for all BlackBerry’s and its simple and quick.

WebSoftware Loading

The phones software is updated using the internet browser and connecting your phone to your PC with a USB cable. It doesn’t require you to install anything on your PC. The update can take between up to 45 minutes. You should follow the instructions on via the loading software link. To use Web Software Loading, the phone needs to be on handheld software v4.5 or later.

Desktop Manager Software Loading

Desktop Manager can automatically download the latest software for the phone you are using, perform additional device backup and restores. There is no longer any requirement for most customers to download and install O2 accredited handheld software to your PC and then upgrade using Desktop Manager. However for very old BlackBerry phones or if your are on a Business Tariff, downloading individual O2 accredited software to a PC and then using Desktop Manager to install on your phone may still be required.

For the BlackBerry Curve 9300 and BlackBerry Bold 9700 you can now upgrade from version 5 to version 6 software. Version 6 software was available from launch on the BlackBerry Bold 9780 and BlackBerry Torch 9800.

There are a number of advantages of upgrading to version 6 on BlackBerry phones.

• Faster and richer web browsing experience (faster to load and navigate, tabbed browsing so you can have several pages open at the same time)
• Universal search (search you whole device from one place)
• Social & News Feeds application (bring the latest news, and social network updates alL into a single place)
• Preloaded Social Networking and Instant Messaging applications (Facebook, Twitter, MySpace, Windows Live Messenger, Yahoo! Messenger, GoogleTalk)

A quick and quirky way to find what version of software is running on a device is to typemyver in the field of an email and then return. The software version will appear on the screen example 9700/5.0.0.593

Alternative ways of identifying the version of handheld software are –

On handheld software v5.0 or earlier Select “Options” and then “About” The software version number is at the beginning of the 3rd line of text after the “v” for example “v5.0.0.832”

On handheld software v6.0 or later Select “Options” and then “Device” and then scroll down to “About Device Versions” The software version number is in the middle of the 3rd line of text after the “v” for example “v6.0.0.285”

The latest software version is: 4.3.1

The following improvements have been made in this maintenance release:

Bug Fixes

• Resolves bugs related to activating and connecting to some cellular networks
• Fixes image flicker when using Apple Digital AV Adapter with some TVs
• Resolves an issue authenticating with some enterprise web services