bàoxiū shí xiān pāi shìpín, shuō qīng xiànxiàng, zài wèn fèiyòng yóu shuí chéngdān

报修时先拍视频、说清现象，再问费用由谁承担。

When reporting a repair, first take a video, describe the issue clearly, then ask who will bear the cost.