All recent iPhones and cellular-capable iPads come with SIM (subscribe identity module) card slots on their sides. A SIM card is how your carrier provides all the information your device needs to get on their network and access the voice and data services linked to your account. There may be times when you'll beed to swap the SIM card in your iPhone or iPad. If you upgrade to a new device you'll have to move the SIM card to that new device. If you're traveling and want to use a local SIM to avoid roaming charges, you'll have to swap it in. If something goes wrong with your SIM card you may even need to replace it. Whatever the reason, it's a super simple process and all you need is an Apple SIM-card remover tool or just a plain old paper clip!
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