https://www.pdevice.com/product/alcatel-u3-specsJust in case you want to know all the spec, it's here. I had a quick read and there's no Bluetooth but there is Wi-Fi so your pc or laptop needs wi-fi to find each other and transmit / upload files. OR, you can get a cable with a standard USB for your computer and a micro USB for your phone and do direct file transfers. Your Operating System is Android 6 so if you Open Settings, you will see Wi-Fi and Networks and Connectivity ... ensure it is switched on and the same on your computer, one of them will offer the opportunity to Find other devices and Handshake ( make themselves known to each other) you may have to create a Password but once they are set up you can SEND from the Mobile and /or fetch/open from the computer. Hope this is helpful