^^Thank you Friend,Please never mind for anything,perhaps you might have missed chirag's comment earlier.Well,everything is O.K.
Thanks,Friend @Chirag_123.I got it clear by now.
But If I opt for Thunder 699 (POSTPAID) Plan from Reliance,certainly I don't have to login everytime for any such "expiry" of "session"?
Actually no idea about Reliance Broadband Network Service.
You need to login with every plan