para sa mga bumili ng huawei e5573s-320 from smart...please consider this... when I bought mine, the first time I open its web user interface, I've noticed it is in unlocked status and .. it will prompt you that there is available update... just ignore it, for if you click and do the update .. it is only then that your pocket wi-fi will be lock to smart network (i've learned this from YøùTùbé video)... explore nyo muna ang user interface at settings. doon nyo makita kung naka locked na ang unit nyo... though you're user interface bears smart logo... try to change and replace with different sim your pocket wifi and you will find out...