Tecno Mobile — 3g

I want to know whether fast dormancy is on/off in tecno camon isky??? Actually when data is on (3g)...in the notification panel it always shows "h+"... Even when there is no data traffic it remains sticked to "hspa+"... On other handsets i see that when there is no data traffic it shows "3g" icon and when i start using data it jumps to "h+"... But in my camon isky it is just sticked to "h+"... I even can not find where to see the rrc state... I want to check that is the rrc state is always "dch"... Or when there is no data traffic it becomes "idel"... Just tell me why it is always sticked to "h+" i know that airtel fully support fast dormancy so it should go to "3g" icon when no data traffic. Solve this quickly.