Hi Shizume, welcome to the forums.
Yes, I had to put down the full 4k. They didn’t offer me a partially secured card, but a fully secured card so I had to put down all the money.
I’ve been reading a lot about this card lately and everybody seems to say good things about it. The only bad comments I’ve read are from people who got denied.
Apparently Bank of America reviews your account after only 9 months (though the site says 12), and if you’ve been good they’ll graduate your card and give your money back.
Are you trying to rebuild or establish credit? Do you currently have a secured card?