Last week, Google confirmed plans to launch its own MVNO to deliver wireless services to consumers, but the company may have left out one key detail. The Wall Street Journal reports that the service could be limited to just a single Android smartphone, only working on Google’s flagship Nexus 6.

That’s right, you’ll have to get your hands on Google’s latest Nexus phablet to try out the new network. Anonymous sources speaking to WSJ said that it won’t work with last year’s Nexus 5 or any other Android devices. The new service will allegedly launch later this month, but delays are still possible.

Google is expected to offer a patchwork service using signals from T-Mobile and Sprint’s networks along with nearby Wi-Fi. WSJ suggests that the high-level of integration between hardware and software needed may explain why it could be so limited at launch.

The Mountain View company may also hope to influence larger carriers with its small mobile experiment, in a similar fashion to how its Google Fiber product has pushed cable providers to deploy gigabit Internet services.