Huawei ec 315 is the best device to surf internet I used so far.
It’s cdma based device which used to give download speed of 14.7 mbps.
I use mts 3G+ cdma internet with data plan of 10 GB per month which costs me around 200rs/month.
Cdma 3g plans are relatively cheap as compared to gsm3G plans as like airtel, idea, vodafone.
Also, it has wi fi hotspot, through which u may connect about 5 devices & enjoy internet like a charm on ur smartphones.
So, I suggest u to only by this dongle if u want to use cheap internet plans i.e. cdma 3g tariff.
Thanks