i recently had a chat with my friend who is working in citibank. according to him, citibank did revise their AF waiving policy. Previously, as long as you call in, the CS will waive your AF. Now, they will need to check your spending patterns to decide if you are eligible for AF waiver.

If the bank is not earning money from your spending patterns, most likely you won't be eligible for AF waiver.

I myself is holding CB Plat. My card have 2-yr AF waiver when I applied previously.