Poor Quality Pictures

solotime first welcome to the forum. you have a very excellent camera there solotime. Sony A6300 mirrors shoots in APS-C mode. totally excellent. question what are you using for a lens. I use the sony A&R markII. these are basically the same cameras. they work excellent for coins. I will share a couple picture with you. you want to set your focusing mode. that will help you to focus your coin photos perfectly. there are a couple more mirror-less photographers. we will all help you I am sure. here is a couple pics let me know what you think. the last image is a slabbed coin. they can be difficult to photograph. with them walk the light right to them. you will see what I mean a little later.

moxking you have a very good camera. but the sony A6300 that is one incredible camera. there is a focus setting in that Sony A 6300 camera when you turn on focus assist. all solotime photos will be in perfect focus. once solotime gets use to the camera. it takes nothing to get your focus perfect. lets start with the lens.

moxking if you ever have to go to a different camera. there are lots here that would be very happy to help you with any camera myself included

Seems like some support issues. My old java-based phone can only open images up to 5MB max, so large images have to be manually converted/resized prior to transfer, or automatically by allowing Windows to do it while transferring (may not always work). If you didn't do it then the computer did it.

With the click of the correct buttons, the images should be able to get in to the phone intact. Opening them on the phone is another story though.

Android phones don't seem to have problems with bulky images at all.