There are three reasonable reasons why a bank might reject your phone: a. Because they think your phone is likely to be or get hacked. b.Because they think your phone might not be the phone of the account holder. c. Because they think you do something that makes you a bad customer. (c) may be reasonable, but it is objectionable.
Some people seem to believe that (c) is the reason. But if using Tor was a reason to disable the phone banking because your bank thinks you are a bad customer, then it would be logical to close your accounts completely, not just online banking.
I think the real reason is (b). Having Tor on your phone makes it more likely that you are not the customer trying to access his bank account, but a hacker trying to break into someone's bank account.
Biting the hand that feeds IT
