Originally Posted by sdsearch

You can't ensure it, except by applying for the business card instead. The business card doesn't have a platinum version.

You can have world best credit score and still get a platinum version, because BofA makes those kinds of mistakes sometimes. Then they may come back to apologize the next day, but it's too late (their system doesn't let them correct it the next day).

You can lower the chances by having an excellent credit score, by having an existing BofA account perhaps (I had a hard which used to the Choice Hotels card back when BofA had the Choice Hotels account, and I never cancelled it, just used it for something small once a year to keep it alive; don't know if it helps or not), and by not having applied for much in the way of BofA cards in recent years.

You have to get $5000 credit limit or more to be able to get the Signature card. You get Platinum if they can't approve you for even $5000 credit limit.

I got about $17k in CL, then on another card I got about $17k in CL, and then another card I got about $17k in CL, and then suddenly on another card they gave me $1.5k in CL, gave me Platinum, and then called me the next to say they'd mistake (but that it would take over 2 months of multiple steps to correct it). Then soon after that I shifted to business cards, and have gotten about $10k in CLs on those to date.