You may actually be approved for unsecured business credit cards or loans within 30 - 90 days! (creditscrubs.com)
There is no preset time frame for when you may get an upgrade into an unsecured business credit card. (wellsfargo.com)
Whether and when you upgrade to an unsecured business credit card depends on a number of factors, including how you manage your Business Secured Credit Card account, other accounts, and other factors such as FICO score, payment history and ratio of credit card usage to credit limit. (wellsfargo.com)