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I have the mobile app on my phone now. I pressed on the camera icon. then a small circle appears on the lower left. If you press on that, it opens your photos and it gives you an option for multiple photos.

Don't know who to do it with taking a new picture...

Awh, thanks, I found another way out though out of curiosity, I upload my picture to Steemit..com, copy the bla bla bla code and paste it on steepshot and it works.
Thanks all the same.