Watch as rescuers in southwest China use video from a smartphone to save a toddler who fell into a 12-metre-deep dry well.

The two-year-old fell through the 30-centimetre-wide hole in the ground on Saturday, China Central Television reported.

Rescuers pumped in oxygen while they figured out how to rescue the young boy.

After several attempts to loop a rope around the boy, firefighters lowered down a smartphone with a video of how to tie the rope.

The boy managed to secure himself to the rope, and rescuers lifted him up to safety. The toddler was not seriously hurt.