Capital One is an odd example of this. I have read many reviews that state that after 18 months with stellar payment history and carrying no balance that users were told they qualified for an unsecured card but would first have to close the secured card (In order to get the deposit refunded) - or you can keep the secured card and open the new unsecured card as well. A few people indicated they were able to graduate without changing the card and it was converted for them - but 95% of reviews speak to how difficult it is to get deposits back - even from them.
The mix of credit you have is 10% of your credit score. The credit-scoring model favors people who have both revolving lines of credit (credit cards) and installment credit (auto loans and mortgages), or a “mix” of the two types of credit. If you only have credit cards listed on your credit report, this can hurt your score. Consider applying for an auto loan or a mortgage, and make sure the lender will report the account to the credit bureaus.
In addition to a cashback program, this card provides valuable credit resources such as free access to your FICO® Score and a Credit Resource Center — just note these services are available whether you’re a cardholder or not. Discover also takes the guesswork out of wondering when you’re ready for an unsecured card (aka a regular credit card) by performing automatic monthly account reviews, starting at eight months of card membership.
If you have missed payments, get current and stay current: the longer you pay your bills on time after being late, the more your FICO Scores should increase. Older credit problems count for less, so poor credit performance won't haunt you forever. The impact of past credit problems on your FICO Scores fades as time passes and as recent good payment patterns show up on your credit report. And good FICO Scores weigh any credit problems against the positive information that says you're managing your credit well.