HTC India — Non function of OTG issue

Address:

Murshidabad, West Bengal, 742137

I have been purchased a HTC mobile in the last month
HTC Desire 626 dual sim blue lagoon
Android version : 4.4.4
Kernal version : 3.10.48
Build No. 1.08.709.107
I have checked by using various OTG tester & checker apps installed from Play store and result found that this device has support OTG, USB host mode enable but device detected. The phone was no root, I have successfully installed kingroot through pc. I have also attempted by using various brand of micro usb OTG cable but no device detected. Very strange!!!