My samsung was working fine for 1-2 months, since then, it's just lagging and things. I tried resetting, sending it back to samsung to see if it has hardware problems, but it's still bad. Had a nokia and a huawei before that, and another samsung, I even had some off brands when I wasn't so financially good but since 2016-17 it feels to me like development has taken a turn backwards, they stopped adding new things, started taking away privileges from the user, and they are trying to hit the same performance with much stronger hardware. Also, twitter still takes 7 seconds to load, but now you can have a 200MP camera with that