I got a replacement BSNL pre-paid association on 03 Gregorian calendar month 2019. when 0.5 hour network showed up however, incoming & outgoing wasn’t active. when tele-verification via sim distributer incoming started. however as per sim distributer a new FRC must be done in order that, i will have free call(1 month) month validity. however because of some reason FRC wasn’t happening. & suddenly on evening of five Gregorian calendar month i saw that sim is showing “invalid sim”. Its therefore terrible please resolve this issue. i am a really busy person stucked by such delay in correct sim activation.