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Catherine HileyMobiles Expert

Catherine is the expert on mobile phones and smart tech here at, keeping all our guides bang up to date with the latest handsets and filling our pages with helpful money-saving tips.

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Best and worst TV reboots according to Twitter

We've seen many TV shows making their return over the years, but how many of these reboots actually worked? We reveal the best and the worst.

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TikTok Skin-fluencer Report

Skin-fluencers are the latest group to join the TikTok famous. But what do we know about them and the content they share?

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These purchases could make you happier, according to science

These purchases could make you happy, according to science. We surveyed 2,560 people to find exactly which purchases have the biggest impact on happiness.

Woman using data on smartphone

What are mobile data allowances?

Getting online and using data is such a big part of using smartphones these days that it's important for you to know what your data allowances are and what they could cost you. Our guide covers all the questions you have about mobile data allowances and more.

Man refurbishing a phone

Should you buy a refurbished phone?

Although new phones are tempting, there are also good deals to be found on phones that have been refurbished. Would they be a good option? Find out about refurbished phones here.

Person typing in mobile phone number

How to port your mobile phone number

To avoid having to change your number and tell all your contacts every time you get a new phone, it's necessary to port your number. But how? This guide tells you all you need to know.

Woman using unlocked phone

How to unlock a phone

If you want to switch networks but keep your handset, you'll need to make sure the handset is unlocked. How can you do that? Read our guide to find out.

Woman using data on holiday

What’s the best network for roaming outside the EU?

If you often travel internationally, you'll need a mobile network that allows the cheapest possible data roaming outside the EU. Read our guide to assess your options.

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How to switch mobile network

Switching mobile network is common enough with so many companies operating at the moment, but it can be confusing if you've never done it before. Our guide runs down the hows, whys and wherefores of the process.

Girl watching video over 4G

What is 4G?

Do you consider phone connectivity when choosing a new phone? Learn all about 4G mobile network coverage here and find out how it compares to its predecessors.

Girl using phone with eSIM card

What are eSIMs?

eSIMs are the latest iteration of the SIM cards our phones rely to make calls. Find out how they work and how they might affect your phone in our comprehensive guide.

Children using mobile phones

Mobile phone safety

When it comes to mobile phone safety, how can we ensure that our children aren't caught out? Our guide to mobile phone safety lays out some best practices that everyone can follow for a more secure mobile experience.