Yes, customers can deposit checks through the Capital One App using the mobile deposit feature. This functionality allows users to conveniently deposit checks directly from their smartphones without the need to visit a physical branch. To use this feature, customers simply need to log into their Capital One account through the app, select the option for mobile deposits, and follow the prompts to capture images of the front and back of the check. It is essential to ensure that the check is properly endorsed and that any required information is clearly visible in the photographs. Customers should also keep track of their checks until they are certain that the deposit has been processed. For more detailed instructions or any limitations on check deposits, it may be beneficial to refer to the current web page dedicated to mobile banking services.