Android Authority reports that one user testing Garmin Messenger on two devices restored chat history through SMS verification without a separate password. The design raises concern that a reassigned phone number could expose a previous holder’s records, but the test did not demonstrate taking over another person’s account with a recycled number. Receiving the verification text remains necessary. Garmin is reviewing the issue, with no confirmed fix announced. Before relinquishing a number, users should check the Messenger account-deletion process rather than assume uninstalling disconnects it; deleting that account does not itself cancel an inReach subscription.