A micro SIM card is the middle size. These have more plastic around them than a nano SIM, but less than a standard SIM. They also have a slightly larger chip. In terms of smartphones, you might need one of these if your phone is over six years old, but they’re rarely used in recent years. Indeed, they were introduced in 2003, so they’re getting on a bit now. Below then we’ll explain what those three different sizes are, which you’re most likely to need, how to adapt a SIM card to a different size, whether you need a new SIM card for 5G, what an eSIM is, and generally tell you everything else you need to know about SIM cards. 1. SIM Card Sizes 1.1 Why are there different-sized SIM cards?

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Turbo boost your credit chances and get your free Experian credit report. Credit Card & Loans Eligibility Calculator The chart below provides a clearer look at the exact size of each SIM card type. You’ll note that combi SIMs aren’t included and that’s because at their full size they’re the same size as a standard SIM, then if you pop out a smaller section it will match the relevant SIM card size below. SIM Type EE trialed the phase out of 3G services in 2023, with plans to fully close down the network between January and March 2024. EE's 2G services will be switched off 'later in the decade'. Find out more at EE . Emergency alerts are a new service that launched in the UK in 2023. In an emergency, mobile phone masts in the surrounding area can broadcast an alert using all 4G and 5G phone networks in the UK. This will warn people if there is a danger to life nearby and provide advice about how to stay safe.A SIM card adapter is a piece of plastic that you can place a micro or nano SIM card into to convert it into a larger size. What happens if you take out your SIM card and put it in another phone?

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For most phone users, nothing will need to change provided your phone supports 4G services. However, some older phones, including simple phones, will no longer be able to connect to a network to use data.While some phones use these, at the time of writing it’s always in addition to a removable SIM card slot (at least for phones sold in the UK), so you never have to use an eSIM on a smartphone. Few networks currently support them either, but it’s expected that these will become the standard SIM type eventually. 1.3 What are the physical dimensions for each SIM card size? If you have the wrong SIM card size for your phone, then wherever possible the best thing to do is simply to request a new one from your network and get your number transferred to that. Instructions on how to take these steps can be found using our device-specific trouble-shooter here. Events that may trigger an alert include severe flooding, fires and extreme weather. Only the emergency services and government departments, agencies and public bodies that deal with emergencies will be able to send alerts. An eSIM is an embedded SIM card (that’s what the ‘e’ is for) meaning that you can’t remove it from your phone or other device. This is the newest type of SIM and it’s found in quite a lot of modern handsets, such as the iPhone 14 range – along with many other iPhones – and the Samsung Galaxy S22 range.

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However, there are alternative options. If your SIM card is too large for your phone, then you can buy a SIM card cutting tool. These tend to look a bit like a stapler, but they trim your card down to the correct size and shape. isn't the only communications infrastructure that's being modernised – read about the move to Digital Voice and the landline phone switch-off, to find out what it means for you. What does the end of 3G mean for my mobile phone? This is a test of Emergency Alerts, a new UK government service that will warn you if there’s a life-threatening emergency nearby. A standard SIM is the biggest SIM card size currently in use, and despite being thought of as the ‘standard’ it’s the most rarely used. It has a large amount of plastic around the chip, and tends to only be found in the oldest of phones (and some other devices). Plus, multiple networks and numbers can potentially be stored on an eSIM, so you can theoretically have multiple numbers on a single SIM. And you won’t need to worry about navigating all the different SIM card sizes detailed above.