Is it possible to port out in less than a month? Currently using YES and line is not stable. I missed a lot of calls. Any T&C written there?

Real cons about YES 4G is there seems to be a firewall that might not have been done properly thus only allow certain websites to load.

I hotspot to my PC and Malaysia bank website can't even load properly. Shopee website / app was loading superslow too but looks like it might have been solved. But YouTube loads really fast. But when I switched to Unifi hotspot, loaded instantly the bank websites !

So wonder what YES 4G priorities are 

Altitude 4 still going strong but Shopee app have been getting heavier ... slow performance now but still can use.. just need patience.

I just got my Yes Kasi Up Prepaid from Shopee to use the *free data.

May I know what is the validity of the SIM card ?

I do not plan to top-up money. Just use the Shopee Yes *free data from previous month Shopee purchases. With existing free data vouchers, I can use up to next Year Feb.

I have checked Yes FAQ but cannot find the info.

Thanks in advance.