Apple has launched a new online tool that makes it easier to switch from the iPhone to a competing smartphone platform and not risk text messages getting stuck on the iMessage servers.
The web-based tool allows you to enter your phone number into the system to de-regsiter it. Once entered, Apple will send you a confirmation code via SMS. Type the code into the browser and your de-registration will be complete.
The release of the tool follows years of complaints about missing SMS/MMS messages from people switching away from iPhone. Although it's unclear how discoverable the new tool will be, it should at least make the process faster once it is discovered.