If you're sharing images over BBM you may notice that they tend to get compressed. This is to help with data usage and for the most part, images should be fine but in case you end up with some that aren't exactly the best/ viewable there is an easy way around it. You can tap and hold down on the image sent to you. From there, a slide out menu will appear where you can tap on the "HQ" indicating "High Quality".. when tapped, it will request the higher quality version from whomever sent you the image.