To rename your device name, which is also the AirDrop name, you should change your AirDrop name. To rename the AirDrop name in the iPhone, do the following: Open Settings and navigate to General > About the Name. Click on the name it is now on, remove it, and type another one. It will also automatically alter your AirDrop name. In case the question in your mind is How do I change my AirDrop wifi name on Mac then go to System Settings > General > About and update your device name there. It is fast and helps you to customize your device.

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