With constantly improving technology, online scams have become a new threat to people. To keep your bank account safe, first of all keep your smartphone updated with new security updates.
Always install apps on your phone from a trusted place. You can take help from Google and Apple Play Store. Never share your banking information on phone or internet. Make sure to keep OTP, password, PIN and other information safe.
Always pay attention to the permissions asked while installing any app on your smartphone. Do not give any unnecessary permissions. Do not click on any suspicious link, SMS or email coming from any unknown number.