3G/ 4G USB Modem internet speed very low (Huawei E392 and ZTE MF190)

[GoogleCodeExporter]

What steps will reproduce the problem?
1. Connect 3G/ 4G USB modem to USB port (Huawei E392 or ZTE MF190)
2. Use internet over wifi (2.4 GHZ/ 5GHZ)
3.

What is the expected output? What do you see instead?
Speed should be around 6-7 Mbps which i get when i connect the moden to laptop 
directly.
But i only get 1 - 1.5 Mbps

What version of the product are you using? On what operating system?
Firmware v3.4.3.6-064 with the above USB modems

Please describe the problem as detailed as it's possible.
If you have connection problem, then syslog file is required. (please do
attach it as a file)
Note that if there will be a poor problem description the issue status will
be changed to 'Invalid'!

Original issue reported on code.google.com by jagdish....@gmail.com on 28 Jul 2013 at 7:57

[GoogleCodeExporter]

1) Use NDIS mode for E392
2) Place modem to distance 1..1.8m from router (via USB2 cable).

Original comment by andy.pad...@gmail.com on 28 Jul 2013 at 4:09

[GoogleCodeExporter]

Hi Andy

Thanks for the support.

Yes i had indeed used the NDIS mode and just tried with a long USB extension 
cable keeping the datacard fairly away from router..doesn't seen to help..  :(

Original comment by jagdish....@gmail.com on 28 Jul 2013 at 6:32

[GoogleCodeExporter]

Can you try connecting the laptop to router via  lan cable instead of wifi? 

Original comment by Adarsha...@gmail.com on 19 Aug 2013 at 7:46