You can also use the wifi connection. this way is solution for the android device that don't have a bluetooth on it. or if you are not ready with flashdisk or external drive.
There is a free Android software named Wifi File Transfer, you can download and install via Play Store.
After installed, run the software, and you will be given the IP Address for accessing from others devices via Browser. Not only from Android devices, you can also access from other computer or laptop that using the same Wifi / hotspot.
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