MTP is awful, it wouldn't shoe thumbnails even on Windows for me, the issue might not be on the KDE side at all.
If you go to Settings>Configure Dolphin>Interface>Previews what does it say next to remote storage at the bottom?
I believe in KDE you can use KDEConnect on the phone and on the computer. This should allow the phone to appear as a mounted drive in Dolphin, and thumbnails should then appear.
Linux
From Wikipedia, the free encyclopedia
Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).
Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.
Rules
- Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.
- No misinformation
- No NSFW content
- No hate speech, bigotry, etc
Related Communities
Community icon by Alpár-Etele Méder, licensed under CC BY 3.0
