The vibration motor attaches to the mainboard via FPC connector and is a compact component.
Symptoms include no vibration on calls/messages or very weak vibration feedback.
Replacement involves opening the back cover, removing the mainboard, desoldering or disconnecting the old motor, and installing the new one.
Repair takes about 20–40 minutes; parts + labor cost is around $4–10 (100k–250k VND).
Post-replacement check includes vibration intensity, touch feedback, and modes (silent/notification).
DIY not recommended without experience as motor sits close to other critical components.