How to download photos from my Macbook Pro to my iPhone 4?

Is there any way that i can do this? Please don't get this question mixed up with " How do i download photos from my iPhone 4 to my Macbook pro " I already know how to transfer photos from my iPhone to my Macbook. I want to know if there's any way i can do the opposite. (Pictures from my Mac onto my iPhone) Please help, xo

Some of the hundreds of options are at the links below.

Easiest is to set up a free Dropbox account and then you can drag and drop files (pictures or anything else) between the two…

http://db.tt/X81uh87

https://itunes.apple.com/...30330?mt=8

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