Switching on DO NOT DISTURB on an iPhone is meant to silence all calls and notifications. This doesn’t quite work with the Monzo app. When my Direct Debit payments are taken at 3-4am, Monzo causes my iPhone to vibrate - which invariably wakes me up, since I sleep with my iPhone by my bedside and use it as an alarm clock. This morning, I was aware of this at 03:11 and 03:31am.
I know I could altogether switch off vibration. However, that would mean I could no longer detect incoming calls and notifications when my phone is on SILENT. Might there be a way for Monzo to tweak how their notifications work, so the iPhone no longer vibrates when notifications are received when DO NOT DISTURB is on?