Juggling multiple devices with Signal? Signal users can link another iPhone to an existing Signal account, rather than limiting secondary mobile devices to the iPad. When linking the additional iPhone, users can optionally transfer their complete message history and the last 45 days of saved media. The expanded support should be especially useful for anyone using separate personal and work iPhones or testing multiple devices. It also brings Signal’s multi-device experience closer to Apple’s Messages ecosystem, where conversations are available across iPhone, iPad, and Mac.