Zain 4G mifi Weak signal

Can some one help me,my zain 4g mifi e5372 need external antenna support inside the room whitch one support it.
Available in the markete antennas connetors different typys.

Shahid its not mifi its wifi  :dumbom:  I always try to learn so never hesitate. regarding 4G router its better to discuss with  Zain people otherwise take Wifi router for your room its cheap and good results.
http://saudi.souq.com/sa-en/mobily-wifi-modem/s/

  Take care bye