# openConnection() Create a baseband connection to the device. ``` func openConnection() -> IOReturn ``` ## Return Value Returns kIOReturnSuccess if the connection was successfully created. ## Discussion This method is synchronous and will not return until either a connection has been established or the create connection has failed (perhaps timed out). This method does the same thing as calling -openConnection: with a nil target. This call with proceed without authentication required, and using the default page timeout value. If authentication or a non-default page timeout is required the method -openConnection:withPageTimeout:authenticationRequired: should be used instead. As of OS X 10.7, this method will no longer mask out “Connection Exists” ‘errors’ with a success result code; your code must account for the cases where the baseband connection is already open. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)