A cell phone can usually retain a log of both incoming and outgoing calls. However, the handset's call log is limited to a certain number of days, after which the entries automatically get deleted. To access a log that is not available on your phone, you can go to your Sprint account and access your phone's call history. You will see the date, time, duration phone number and destination of each outgoing and incoming call.
Go to Sprint's website and log in to your account by entering your username and password. Once your account page opens, click the "My Account" tab.
Click "See All Usage" at the bottom of the page.
Click "See Call Log." This will show you a detailed call log with each call made and received on the current billing cycle.
Click "See my Bill" if you want to review the call log of the previous month.