To by Huawei Mobile modem

Hello,
To be clear, mine is not like the one you are looking at.
I bought a Mobile modem that is from HUAWEI and I use it with my Zain contract. I have had no problems so far. It has increased the clarity of my skype and all my streaming internet. Works great.
The specs for my modem are
Technical Specification

• Support 4G network download speed up to 150 Mbps/ Upload Speed up to 50 Mbps
• Support 4G network FDD [2600/2300/2100/1800/900/800] Mhz
• 6 hours battery life.
• WiFi 2*2 b/g/n Up to 11 users (10 Wi-Fi + 1 USB)
• Support 802.11n 2.4G/5G for enhanced indoor/outdoor WiFi coverage
• Supports SMS
• LCD Screen
• External MIMO antenna interface
• Supports Windows and MAC OS

Thank u but in m planning to buy 3G modem.....for economic & usage concern....

No worries.
You might find this link useful. It has many reviews about this device.

amazon.com/Huawei-E5330-Mobile-Hotspot-T-Mobile/dp/B00INXBW3U