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What Happens When You Change Sim Cards? [Solved]
When you remove your SIM card from your phone and replace it with another card, you lose access to any information on the original card. This information is still stored on the old card, so any phone numbers, addresses or text messages that you lose are available if you insert the old card into the device.
What happens if you take out your SIM card and put it in another phone?
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Transferring & Activating SIM Card On The iPhone 12 - Took Less Than 2 Minutes!
In the video,
How Do SIM Cards Work?
SIM cards