so I'll list some of what I experienced; Screen dims when opening web browser, audio lags, wifi drops in and out randomly, Bluetooth can crash phone and when it does "work" it lags and doesn't auto connect, texting apps don't seem to work well on Huawei phones as a rule apparently, call quality is terrible, or so I am told all the time and the ultra battery saver doesn't allow for screen brightness adjustment, instead it blares its blue light screen at max, which is both annoying