I haven't been a smartphone user for all that long either and it took me a little while to figure out how to post photos from my Samsung phone (which is an Android phone). I hope the following will help, but disclaimer, I find that when I post a photo that looks fine on the phone, it will post sideways here on a thread:
- take the photo; you can check the image quality in the Gallery application of your phone
- log on to the board, create the thread where you would like to post the photo
- go to the add photos here part of the thread creation screen, click on the 'add photos' button at the bottom of the screen
- the phone will prompt you to select the photo source; I find mine are usually in the 'Documents' option and the most recently taken photos will appear. I only seem to be able to select one photo at a time, but can do so just by tapping on the photo to select it.
Now, I am a dinosaur with technology and y'all know what happens when I try to repair anything these days, but I hope this may be of some help!!