Nope, P9 Lite does not have any link with Leica, but overall photo quality is good for its price.
I also purchased P9 for my sister. Apart from excellent camera and monochrome shooting, those dual Lieca cameras can achieve software based shallow depth of field (f/16 to f/0.95) at objects 4-6 feet away, which is extremely rare in smartphones. Plus, the DOF and focal points can be re adjusted unlimited times later.
Great effort by Huawei and Leica.