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Google testing Voice over LTE support for Project Fi

If you're a Project Fi customer, you may have noticed improved call quality over the past few weeks. That's because Google has been quietly testing Voice over LTE (VoLTE) for a subset of Project Fi users, formally announced in a post on the Project Fi Help Forum. If you're curious to know if you're one of the fortunate testers for this new service, you can find out by looking for the signal indicator to continue displaying LTE when making or receiving a call.

VoLTE allows you to make calls over a data connection without using any of your data allocation. You also get the added benefit of faster data browsing during an ongoing call — perfect for those times when you need to look up directions on Google Maps while talking to someone. You'll also get faster call setup for a smoother overall call experience on your phone.

If you're curious to know more about Project Fi and how it works, it's Google's phone carrie, which offers you mobile data service spread across three mobile networks: Sprint, T-Mobile, and U.S. Carrier. Your phone will intelligently switch between the different networks to find the strongest connection, and it will also automatically use Wi-Fi for calls and texts wherever available.

Project Fi is restricted to Google's devices — the Google Pixel and Pixel XL, Nexus 6p, and Nexus 5X — and VoLTE support for Project Fi is also limited to T-Mobile's network, as it's currently the only partner network to fully support VoLTE.

Google hasn't set a timetable for when VoLTE will roll out to all Project Fi users, but testing will continue and we're sure we'll hear updates as things progress.

Are you one of the lucky Project Fi VoLTE testers? Let us know your experiences so far in the comments below!

Marc Lagace was an Apps and Games Editor at Android Central between 2016 and 2020. You can reach out to him on Twitter [@spacelagace.

14 Comments
  • Does it also support HD Voice, as it does on other carriers?
  • That would be awesome to have.
  • And the Nexus 6. The noble beast also works on Project Fi; you just can't buy one from them anymore.
  • Can someone please proofread these articles before they're posted?
  • I know! It seems like no one proofreads these articles. Spelling/grammar mistakes are fine; everyone makes them. But good journalism should include proper grammar and correct spelling.
  • Why test it.. Just effin doit. Tmobile LTE calls worked perfect on my phone and now Im on Pfi (which uses Tmobile.) & so what if Sprint & US cell take longer to catch up.. Im on Tmob 99.9% of the time anyway.
  • In an enterprise or commercial environment, you have to test. If nothing else, Google needs to make sure they aren't billing for VoLTE data. Erroneous billing will upset subs very quickly. Even in the home, you test things if you're married. Hand your wife a flaky piece of hardware or software and see what happens. It won't be good, I can tell you that.
  • But Im American, I must have it now.
  • Trumps already starting to make America great again!!
  • About time.....
  • U.S. Carrier? Lol that's a funny mistake but it's U.S. Cellular. EDIT - Also, "Google's phone carrie, which" You're missing an "r" in the third paragraph. Hope you don't think I'm picking on you. Just trying to help!
  • Not sure I'm using VoLTE but PF has been great for 6 months and I don't miss Verizon.
  • This is good. Now, if we can just do something about the $10/Gb of data cost, whether you're purchasing 1Gb or 100Gb. Project Fi desperately needs a sliding scale where the cost per Gb decreases as the amount of data purchased increases. Hell, an unlimited plan would be a good thing too, but, at the very least, a sliding scale.
  • just noticed today, the LTE icon remained when I made a call..sweet