The four line one to one - can not unlock the phone can call to have a video? - Common Problem

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The four line one to one - can not unlock the phone can call to have a video?

Date： 2016-08-12

May cause a short circuit fault or sewing.

Processing method: check the host to the electrically controlled lock circuit is short circuit or broken.

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After-sale Service

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After the terms of service: 1. The group of companies selling products appear quality problem to provide one year free warranty service. Improper use (artificial damage and natural disasters are not included ) 2. Sales of products is in warranty goods, we will be made according to standard warranty maintenance services to provide services to you. For the maintenance beyond the guarantee period, you need to bear the cost of in addition to the maintenance, also including repair by replacement of spare parts cost and transportation cost.Note: all man-made and natural disasters, the damage of the product to charge maintenance treatment, not belong to the scope of free maintenance.Hotline service:The national consumer unified hotline:400-830-2639，To provide you with free product consu...

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The national consumer unified hotline: 400-830-2639, to provide you with free product consulting service and repair service. If you fail to solve in time, will provide a continuous follow-up service.The national consumer unified hotline: 400-830-2639Unified national customer service hotline: 0755-27603666 (0)Company E-mail: ydgl@szy-d.cnService complaints telephone: 13603016495

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