The next time someone sends you a picture over BBM, if you’d like to get a higher quality version of the picture all you need to do is tap and hold the image followed by tapping Request High Quality on the menu that appears on the right.
If you are using BBM for Windows Phone, tap and hold the image followed by tapping request high quality.
After doing this, the person who sent you the picture can choose to send you a higher quality version or optionally say no to the request.
Keep in mind, requesting and sending higher quality images will use a bit more data than a regular picture, so I’d recommend using this feature when you are connected to a Wi-Fi network or hotspot.
To save a picture someone sends you using BBM, tap and hold the image followed by selecting Save Image from the menu that appears on the right.