Did some research, turns out that in US and some other countries, the base 2.0 trim comes with no cruise control. And a simple plug and play change of steering control button panel activates the feature. Original factory cruise button panel costs around 50 USD.
So I asked Hyundai dealership to arrange this part part number: 96720 F2110)for me (it costs around 14K PKR). However, they said that if it doesn’t work, they won’t accept return of the part; and I was okay with this. Before ordering I did some more research on activating cruise on 1.6 variant but couldn’t find any use case on the internet. Therefore, I reached out to an engineer at Hyundai Lahore and he told me that he’s very sure that the ECU for 1.6 is different from 2.0 and it doesn’t have cruise feature in it. So it won’t work.
I didn’t end up buying the part for my experiment though. Do let me know if you successfully activate the feature. 