It's a completely free service, designed to stop anyone getting unwanted calls from businesses or other organisations.
Yes, you can withhold your number when making a call from your i D mobile. Please note: the normal method of withholding a number - pressing 141 - doesn't work on an i D device.
With 3G, UK mobile owners can do things like browsing the web, playing online games and making video calls.
4G is the fourth generation of mobile networks, and it gives UK mobile owners superfast internet access (around 5 times faster than 3G).
If you're keen to know when your new phone will arrive, please check out the delivery section on our Contact Us page.
Here you'll be able to find out more about how long delivery usually takes, who will be delivering your order, and which addresses we can deliver to. It was launched back in 2003, and gave us much quicker data transfer speeds than 2G.
With 4G you can make clearer calls, stream music and video content without any buffering, and quickly download apps and other content.