You can contact customer service in JD.COM through JD.COM App. You tell the customer that the goods you buy need warranty, and then provide your shopping invoice to the customer service. JD.COM customer service will arrange Jingdong Express to pick up the goods you want to repair after it is confirmed. During this time, you just have to wait quietly. After the goods are repaired, Jingdong Express will deliver them to your door.