Top guides for your mobile phone
Most people these days have a smartphone that allows them to check their email, search the internet, watch films, listen to music and engage with social media all from their handheld device.
Your mobile network provider should automatically switch you to Wi-Fi if a nearby network is available. But if there's no network available, this is where phone data plays a role.
Different network providers have their own rules about how and when you're allowed to unlock a device. It's important to bear these in mind, as using the wrong process could cause you problems.
Our handy mobile data usage calculator can help you find out what you can do with your internet allowance.
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