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Mobile Guides 2024

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How to unlock a phone: a guide

How to unlock a phone: a guide

Unlocking your phone handset enables you to switch from your [mobile phone deal](https://www.telegraph.co.uk/compare/mobile) to a cheaper SIM-only plan, pass on your handset or sell it, the last of which can be handy if you want to offset the cost of upgrading your phone. This article explains how to unlock a phone as well as the policies of the different [UK mobile networks](https://www.telegraph.co.uk/compare/mobile/networks) and the consequences of doing so.

What is Mobile Data? The Complete Guide 2024

What is mobile data?

Mobile data allows you to stay connected when there is no Wi-Fi signal available, meaning you can play online games, stream TV shows, use social media and much more on your mobile phone while you’re on the go. It also allows you to perform these activities when abroad via data roaming. In this guide, we explain how mobile phone data works, what a mobile data plan is likely to cost and how much data usage you may need.

How Much Data Do I Need? A Guide

How much data do I need?

Mobile data allowance is usually the decisive factor between a plan being cheap and expensive, so knowing how much data you need is essential to avoid overpaying for your mobile deal. Do you need unlimited data? Most plans advertising themselves as ‘unlimited’ do impose a limit anyway, so how much is unlimited data typically? We aim to answer these questions for you.

How to Remove a SIM Card from an iPhone

How to remove a SIM card from an iPhone

A SIM card is a digital card that allows your phone to connect to a mobile network. When you sign up to a mobile phone provider, you’ll be given a SIM that the phone company can use to verify your identity and your phone number. A SIM card can also include your phone contact list and any stored text messages if you choose to save them there. You’ll need your SIM card to make calls and connect to [mobile data](https://www.telegraph.co.uk/compare/mobile/guides/mobile-data) via 4G or 5G. When you buy a new phone or change [mobile networks](https://www.telegraph.co.uk/compare/mobile/networks), you’ll need to remove your SIM to insert the new one.

How to Activate a SIM Card: a guide

How to activate a SIM card

You may need a new SIM card if you are swapping phones or changing networks; or you may have received a new SIM from your current provider after upgrading your phone deal. Either way, once you have your SIM you will need to activate it. Read on to find out how to activate your new SIM whichever network you are on.