Nationwide Online Banking, Mobile App not working. Nationwide serves millions of users in the UK with banking needs 24/7 a day, with online banking services through their computer or on the go via the Nationwide Mobile app if you need to check your balance quickly. At times though, we have seen that there are problems with Nationwide Online Banking Bank of America offers retail bank services to individuals and businesses, including checking, savings, credit cards, mortgages and loans. Clients can review their account balances and transactions, deposit checks and tranfer money through online banking and mobile banking apps for iPhone, iPad, Android, Windows Phone, Blackberry, Kindle Fire and other mobile operating systems.