Answered question
Do I have to do activation within a period of time after the sim card is delivered? I want to activate in January or later because I heard there are a lot of problems
There's no hurry to activate sim card as launching price has been extended.
Other answers
Yes you can activate later on . There is no known limited time to activate
I think there is no deadline for activation
Anytime you wish. It doesn't look like there is an expiry date on them.
Beta price was extended for 2 more months. So intro price should be same. Then Jan should be fine.
No deadline. Give 'er.
Yes just make sure to do it before the price changes :)
No rush, considering the date for the introductory price has been extended.
You can activate anytime!
Yes but you risk to miss the introductory prices and pay more for your cell plan