We have received photos from a trusted source that show what could be AT&T’s first LTE smartphone, the Samsung Impulse 4G. We don’t have too many details to go on beyond the photo you see above along with an image of a case accessory that maps out the back of the device, but the Impulse 4G does look awfully like the Samsung DROID Charge, and this might be AT&T’s equivalent. Again, no firm release date on this one, but we definitely like where this is going. Full-sized images are in the gallery linked below.