If you are an iPhone (IOS) user & you have not logged into your Citi Mobile App for the past 30 days, any Push Notifications that been received during this period will not be stored. If you are using an Android Phone, any push notification message that sends to your phone will be stored within the Citi Mobile App indefinitely. You will not be able to delete any notification from your Citi Mobile App. But if you uninstall the app, all your notifications will be removed. If you re-install the Citi Mobile App subsequently, then features such as Push Notification, Touch ID and Snapshot will need to be enrolled again.