Android
Change Device Name auf Android
By default, Android pulls the device name from the phone model set at the factory. This name is not tied to your Google account or a specific app. It is a system-level label stored in the phone settings, and it gets broadcast whenever the device connects to Bluetooth accessories, joins a Wi-Fi network, or shares files through Wi-Fi Direct or Nearby Share.
Because this name shows up on other people's screens during pairing or file transfers, leaving it as the raw model number makes your phone hard to identify among several devices. Changing it does not affect performance, connectivity, or any stored data. It only changes the label other devices and apps display.
Menu path
Open Tap on Settings ➔ Tap on About phone ➔ Tap on Device name ➔ Enter a Name and tap on OK.
After confirming the new name, it applies immediately across Bluetooth, Wi-Fi Direct, and Nearby Share. You do not need to restart the phone for the change to take effect.
If you only want a friendlier name inside one specific app, such as a smart-home app, check that app's own device settings instead. Renaming the phone system-wide will not automatically update names stored inside third-party apps.