To connect your device to a mobile network, you need to insert a SIM card. If no card is installed, youâll see a message that says âNo SIM card.â How to get a SIM card If you donât have a SIM card for your device, contact your mobile service provider. In addition to providing you a SIM card, they should activate your SIM card so that you can start using it right away. To find out what kind of SIM
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