4 months ago I bought a Huawei G9 P9 Lite by Aliexpress. The battery lasts less than 3 hours and restarts when I open the camera or a call comes in. The battery says it is at 60% and when it restarts it says that it is at 27 for example or does not let it turn on because it does not have enough battery. I reset it looking for improvements and nothing. I took him to a Huawei review center in St. Petersburg and they say he has problems with the board. I do not understand how the phone can have problems when it only has 4 months of use, it is like new. Any suggestion of whether it can be another affectation that is not the plate? ... Thank you very much.