Got an Apple iPhone 3G running on OS3.0? Want to use it on 3UK? Read On…

This article is outdated now, whilst the files are still here, use this blog post instead.

Edit: If you need the instructions for JailBreaking 3.0.1, click here

Before we begin, if you need to download the OS3.0.0 Firmware, Click Here.

Firstly, you need to JailBreak your device using one of the many applications available on the internet (Check QuickPWN).

Then, you need to setup your iPhone to use e-Mail and e-Mail yourself the following file. Download: 3UK.mobileconfig. You could also navigate to http://bit.ly/3UKConfig on your iPhone.
What this file does is allow you to use MMS and Internet.

Now, on your iPhone, go to Settings -> General -> Network -> Cellular Data, and enter the following details in the dialog:

• MMS APN: three.co.uk
• MMSC: mms.um.three.co.uk:10021/mmsc
• MMS Proxy: mms.three.co.uk:8799

If you want to modify the voicemail settings, then dial the following number(s).

Divert all calls, unconditionally:
**21*+447782333123#
To cancel ##21#
To check status : *#21#

Divert calls if handset is unanswered:
**61*+447782333123*11*30# [replace the 30 with either 5, 10, 15, 20, 25, or 30 for the delay in seconds]
To cancel: ##61#
To check status : *#61#

Divert calls if handset is unreachable (out of coverage/switched off):
**62*+447782333123#
To cancel: ##62#
To check status : *#62#

Divert calls if handset is busy, call waiting’s not answered / call is rejected:
**67*+447782333123#
To cancel ##67#
To check status : *#67#

If you need to cancel ALL divertion:
##002#