Samsung has 2. There's the one by Google called nearby share and There's the real one owned by Samsung called quickshare. QuickShare allows air drop like functionality between galaxy devices while nearby share is to allow air drop like functionality among all Android devices besides just Samsungs. For example, if you have a galaxy phone and your friend also has a galaxy phone or other galaxy device, you would use quickshare to send files to each other fast. If you were transferring between a Samsung and another android phone ie. Google pixel then you would use nearby share. Both sharing features can be found in your quick settings menu. If you don't see them, tap the three dots in the upper right corner and you should be able to add them to your quick settings menu. If you need further assistance, feel free to ask.