I am using xiami mi a1 past one mounth. it wasthe worth experience, it is like some company has started to experiment with ui, worth user interface. someone needs to get a training to use the phone feature. the radio performance is very bad. sound reception is too low. the 2 camera are waste, the 2x optical zoom is nonsense, looks like fake claim . call drops, low singnal strength it is waste for 4g and 3g user. I regret for buying this mpbile phone