Start with your employer’s phone policy and use only approved systems for...

https://rylansexpertjournals.cavandoragh.org/can-i-use-my-personal-phone-for-patient-messages-at-work

Start with your employer’s phone policy and use only approved systems for patient information. Hide lock-screen previews. Agree on on-call notification rules with your team. Before sharing, check the account and recipient.