The difference between a bank’s mobile site and primary online site is that the mobile site is specifically designed to be easy to read and navigate on a smart phone screen. The mobile site carries all of the same content as the primary site, and gives customers access to online banking functions such as viewing balances, transferring funds, and paying bills.
Some banks today even offer apps for Apple or Android operating systems. These apps carry the same functionality of the online banking portion of mobile and primary websites, but are further optimized for use on these devices. Using the secure app, you can accomplish many routine banking tasks right from your phone, including viewing account balances and transaction history, view account alerts, initiate account transfers and pay bills.
See also, “What is online banking?