That support is limited, of course: while you can use Google Voice’s text-messaging features, you can’t make Google Voice calls with the devices themselves (remember, Google Voice is not so much a VoIP service but a way to soup up your existing phone). But Google has added a feature it’s dubbed “Click2Call,” which allows you to initiate a Google Voice call and pick which of your phones you’d like to receive the call on.
In addition to the expanded device support, Google added a few other enhancements and bug fixes in this version: for example, enabling Push Notifications will now automatically disable text-message forwarding, preventing you from getting multiple copies of the same message and helping you avoid exceeding your text message limits.
There’s also now a Contacts button in the dialer tab—easing the process of making calls from your device’s address book—and you can activate Voice’s Do Not Disturb feature from the Settings tab. Personally, I heaved a sigh of relief to see that you no longer need to tap that annpoying “OK” button each time you send a text message.
Google Voice is a free app and is compatible with any device running iOS 3.1 or later; it also requires a free Google Voice account.