Advantages: long standby time, convenient fingerprint identification Disadvantages: The memory is small. It can't be charged while playing with the mobile phone while charging with 10w output. The storage is small. It is unfriendly to game users. Take the one I have. It takes a while to read it when loading the SIM card. It doesn't recognize the mobile SIM card. It can be directly 3G in a certain area (for example, Hebei Langfang)