说明：  MICRO SIM卡座即普通SIM卡座后一次升级款式，这是一个质的提升，在功能不变的前提下，体积缩小了超过一半的空间，在产品要求越来越精小的今天，节省空间是必不可少的，但是他的功能却又如此强大，值得推荐。
(MICRO SIM Card Seat is an upgraded model of ordinary SIM card seats. This is a qualitative upgrade. Under the premise of unchanged function, the volume has been reduced by more than half of the space. In today's increasingly refined product requirements, saving space is essential, but its function is so powerful that it is worth recommending.)