How much time does it generally take to get 4G signal on a new sim

[Rehan Kumar]

I converted my airtel prepaid number to postpaid yesterday evening but I am not able to latch to 4G network no matter what I do, the new sim activated quite quickly (within 20-30 mins), everything else is working fine.

 

[Sushubh]

Airtel changed my sim 4 times before 4g started working one time ? on prepaid.

Unless things are different on postpaid, you probably would need to visit their store again ?

 

[gopichandpai]

They need to enable 4G from their backend when things don't work like expected. Give call to customer care and they should be able to activate it from their side.