How to Unblock SIM If FBR blocked If your sim is block by fbr how to unblock the sim. File your tax retrun Fy-2023 as soon as possible.if you have filed tax return for the year 2023, please stay assured that your SIM will be automatically restored within a timeframe of 24 to 48 hours. If you want to unblcok sim as soon as possible to file your tax retrun.   FBR Block the Sim what to do now ? File your tax retrun Fy-2023 SIM Blocked by fbr What to do now? Tax retrun filing required.