假如你是李华，是英国某所学校的交换生，你几天前在英国的一个商店买的手机坏了。请你根据以下提示，给该商店客服发一封电子邮件。1.写作目的;2.具体问题：如手机黑屏， 不能重启等;3.解决办法：如维修，更换新手机等。注意：1. 词数在100字左右;2. 可适当增加细节，以使行文连贯.
Dear Sir or Madam,
My name is Li Hua, an exchange student from China. I’m writing to report the quality of the mobile phone which I bought from your store.
It unexpectedly went wrong a few days after I bought it. The screen turned out to be black while I was taking photos. I tried to restart it according to the instructions, but it still failed to work. Therefore, I’m sure there is something wrong with the phone. I am hoping that you direct me to a store where I may get it repaired or change it for a new one within the next 3 days. Since your store has gained a good reputation for customer satisfaction, I am confident you will process my problem at your earlier convenience.
Looking forward to your early reply.
Yours Sincerely,
Li Hua
【参考译文】
尊敬的先生或女士，
我的名字是李华，一个来自中国的交换生。我写信是想报告我从你们店里买来的手机的质量。
我买了几天后，它竟然出了差错。我拍照片时屏幕变成了黑色。我试图按照指示重新启动它，但它仍然无法工作。因此，我肯定电话有问题。我希望你能引导我到商店，我可能会得到修理或换新的一个在未来3天内。由于贵店为顾客满意赢得了良好的声誉，我相信你会在方便的时候处理我的问题。
希望早日得到你的答复。
谨上,
李华