Perhaps for the phone you could try something like KDE Connect. You have to be on the same wifi, but once connected, you can do things like remote input, sharing the clipboard, sending sms, sending files, and you can browse files from the PC.
Some things I have listed here may differ as I am on an Android
I am currently using dolphin, and I would highly recommend. I tried xfe before. It's highly customizable, but opening files was king of annoying (you had to manually input the path of the application)
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