I have vibrations in my muscles/veins, sometimes so strong i think my phone is buzzing. they don't hurt but i'm still curious what they are. ?

Might be low calcium: If you are having tingling numbness around your mouth or hands and feet, or muscle weakness, you should see a doctor. Otherwise, it sounds like benign muscle spasms (twitches really). A few muscle fibers are overstimulated, variously attributed to low calcium or stress/anxiety. Athletes can also have these twitches, and the exact mechanism is unclear. Dietary calcium and less stress may help.

Doctor can evaluate: Muscle twitches in a few muscle fibers can start and stop on their own. The fibers don't create enough force to cause a big movement but the twitches are annoying. Some people report vibrations, which would be faster than twitches. Muscle cells do vibrate at certain frequencies during some kinds of contractions. A pm&r (physical medicine) doctor or neurologist who does muscle testing can evaluate.