Google is currently offering open invitations to its Project Fi wireless service, but only for a limited time. Indeed, Google is celebrating the launch of the Nexus 5X and Nexus 6P with instant invitations to its upstart experience. You’ll have to act fast, though, it’s only open for 24 hours and the clock has been ticking.

Prior to today, those who were interested in signing up for Project Fi first had to signal their interest and wait for an invitation. Said invitations could take a few weeks or so, sometimes longer. Today, however, you can skip the line and get right in.

Project Fi launched in April and acts as a mobile virtual network operator that utilizes Sprint, T-Mobile, and Wi-Fi networks. Previously, the only supported smartphone was the Motorola-made Nexus 6. Both the new Nexus 5X and Nexus 6P are designed with Project Fi capability.

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