I’ve spent some time trying to modify a Coppermine theme so that I can view my galleries on my Huawei G300 mobile. It has a screen with 480 x 800 pixels, so viewing is best with the screen in a horizontal position. Below are some photos of the screen (I can’t do a screen print of the mobile) so it will look better on the mobile screen.
You can view the intermediate size images, one by one, by touching the blue “<” left or “>” right arrows, seen above and right of the image, just as you can with the mouse pointer when viewing with a pc.
It is possible to enlarge one of those images, by pinching, as you do with mobile phones. The one below is not the same photo, but you can see it is much wider on the screen.
Finally, by starting the slideshow, top left of screen, third from left, the images in the album will show one after the other, automatically.
It works for me, but I haven’t tried it on other smart phones. Give it a go and let me know if it is successful on your smart phones. The link below should automatically start a slideshow on a smart phone:-
If you try it with an ordinary pc, the standard coppermine slide show will run.