I've wondered one thing about the "Days left in the current Bill Cycle" on the smartbytes page. It's always 1 day less than the actual days left. If it's a 30-day month, the days left on the first day is 29 and if' it's a 31-day month, the days left on the first day is 30. It discounts the current day. On the last day of the cycle, it's 0. It has always sounded weird way to me.
I got my new airtel wifi connection on 20th July with Rs999 plan with 10gb(2mbps) fup and as of now the smartbytes page is showing 9.78 Gb left but days left in current billing cycle to be 2.Is smartbytes trustworthy?
Even if you got a connection only on 20th, your billing cycle might be between 26th of a month to 25th of the next month. So, I guess you'll get a partial bill this month for July 20 - July 25.