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Mobile phone providers advice guides

14 articles
Unsure about which mobile phone provider to choose? Our in-depth reviews will tell you everything you need to know including how they performed in our regular satisfaction survey.

Best and worst UK mobile networks

Want to switch mobile phone provider but don't know where to start? Our latest satisfaction survey results will help you make the right choice.

Mobile phone provider reviews

We regularly survey thousands of mobile phone customers so we can tell you exactly how Asda Mobile compares with other phone providers.

Mobile phone coverage map

Discover which network has the best phone signal where you live using our coverage checker – it uses millions of readings from real customers.

Which phone network offers the best signal?

New mobile phone signal analysis has found one network is way out ahead when it comes to offering the best 4G service.

Which UK cities get the best 4G signal?

Exclusive new data produced for Which? by mobile phone benchmarking experts OpenSignal reveals which UK cities offer the best chance of getting a 4G signal and which have the fastest download speeds. Read on to find out more.

How to choose the best mobile phone yearly upgrade plan

Want to upgrade to the latest smartphone and avoid being tied to a long-term contract? Yearly upgrade deals promise to make it easy, but are they too good to be true? Find out how they work, and what you should watch out for.

How to haggle for the best mobile phone price

Many of us are reluctant to haggle. But we shouldn't be – it can often get you a better deal. Follow our top tips to save money on your mobile phone contract.

What is 5G and where can I get 5G in the UK?

5G promises faster data than ever - find out when and where you'll be able to use it in the UK, and how fast it really is.

EU roaming and international calls explained

EU roaming charges are a thing of the past, but you still need to be careful using your phone abroad. We look at the benefits of EU roaming, hidden costs, and charges if you go further afield.

How to prepare your mobile phone for holidays abroad

Want to use your mobile phone abroad and avoid astronomical bills when you get home? Read our top tips to get your phone prepared.

How to keep track of your mobile data and minutes

Exceeding your mobile allowance can result in hefty bills. Find out how to monitor your bundle on iPhones and Android phones to make minutes and messages last longer.

How to switch mobile provider

Find out how to switch to a better mobile network provider with our expert advice

How to buy the best mobile phone on contract

Whether you're a download-addicted smartphone owner or just want to make the odd call, we'll help you get the best-value phone.