Huawei E8221 dongle is best iam bought in 2 years ago still now iam also using it max speed 21 mb per second and it nice it has WiFi extender option and massaging and USSD option and it best but lite costly but value for money product I like this product and it also create WiFi zone in home so it is very useful and it supports 2G also and it is best dongle for 3G users but it not supports 4G and it has plug and play option so using is also very easy and it is not locked for any operator so all 3G sim supports