I want to put files (images or pdfs) onto my phone as fast as possible using wifi (LAN over wifi). I don't care if it doesn't allow the files on the phone to be uploaded to the PC, I just want to put files onto the device from the PC.
Is there anything I can do to solve this?
You can just install an ftp server app like Primitive ftpd or other and access your droid using an ftp client on you computer, such as Filezilla. You can also do it the other way around : share a specific folder on your computer like you would for sharing on your home network, copy there the files you want to put on your android, and then access it from your phone using one of the various file explorer apps that allow you to, such as Ghost Commander, Solid Explorer or ES Explorer.
If I remember correctly, you can also use Airdroid to do that. It's an app that allows you to access your android device from any web browser, you can manage your contacts, send sms, etc., and copy files directly if you're on the same network, otherwise it goes through their servers.
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