This new bus service (2024) is pretty handy for getting around the center of the Phuket Old Town. The buses run every 15 minutes and there are special signs marked Dragon Line to mark the bus stops. It operates from around 10 AM to 9 PM. Rumour has it that it may not remain free for much longer, so get in on the free transport while you can.
The bus itself is quite comfy with air-con and even free Wifi, The buses are electric, so quiet with no fumes. There are about 25 seats on it and plenty of space to put luggage if need be.
You can find the route information on this website: