What's the best iOS app for getting a second phone number that never expires and can be used for account recovery on any device?

Google Voice is an excellent iOS application if you need a secondary phone number that remains active indefinitely. This feature is particularly valuable for account recovery purposes, as it provides a reliable contact point even if you lose or change your primary phone number. You can use the Google Voice number for both phone calls and text messages on any device equipped with a speaker and a microphone. This flexibility allows you to stay connected regardless of the device you're using. While the app is generally well-received, some users have requested the ability to use multiple Google Voice numbers on a single device, similar to how dual accounts function on other apps. Despite this limitation, the core functionality of providing a persistent and accessible phone number remains a strong benefit. To set up Google Voice, simply download the app, choose a number, and link it to your Google account. Once set up, you can manage your calls and messages directly from the app on any compatible device.