I just started last night. A few days ago, I went to Mi's home to experience it. I felt that the 13 screens were not as good as mine. The 13 screens were more thorough and clear. Today, after a day's use, I felt that they were OK. The biggest feature of 14 is that the signal is good. The calls in the elevator are very clear and not intermittent. The sound quality is very good, and the photos are also OK. It is worth having.