I had good experience with this device for 2 years. Works perfectly without any problem and maintainance. Provide good data transfer speed if network coverage is good in your location.
The reason for not recommending this great product is that it support 2g and 3g network, while on the other hand data speed on 4g modem is much better. You can send and receive sms and calls with this device on your laptop or pc. It is outdated technology now otherwise thumbs up for it.