Hello folks, My Xiaomi MI3's screen cracked by falling, the display is working just fine but touch is only partly working, the upper left side touch is working ..else is not working. I went to service center, they are asking for $127 to repair it..which I think is too much. display is working which means LCD is fine and touch is not working which means digitizer is not working..So I was wondering that could I replace only digitizer of device..or do I have to replace both LCD+digitizer. And where should I buy it.I searched LCD+digitizer on xiaomishop.com but it is of $96 while the same thing is available for $50 - $60 in other E-commerce websites like ebay, alibaba, aliexpress etc..these website says its genuine and original product so I wonder why there is this price difference? I should I buy these replacement part...where will I get original product? will dissembling and assembling by own will void warrenty?