Google Fi network switching is back. On November 10, 2026, Google launched a Fi “super network” that moves Pixel 9 and newer phones between two 5G networks and Wi-Fi hotspots. Google did not name the second network. You need Fi active on eSIM, and nothing changes for porting your number.
Google Fi network switching: the facts
| Carrier | Google Fi Wireless |
|---|---|
| Network | T-Mobile (primary host network). Google describes the new setup as “two of America’s fastest 5G networks” and does not name the second one. |
| Change | Automatic switching between two 5G networks, plus Wi-Fi Auto Connect+ and a new AI support agent, Ask Fi |
| Effective date | November 10, 2026 (rolling out; not available in all areas) |
| Who is affected | Google Fi customers on a Pixel 9 or newer, with Fi active on eSIM and any non-Fi SIMs turned off |
| Cost | Included in every Fi plan. Google lists no price change. |
| Source | Google Keyword blog, November 10, 2026 |
How the Google Fi super network works
Google says the phone holds two carrier profiles on one eSIM at the same time. The technology is called Multiple Enabled Profiles (MEP). If the main connection drops or slows, Fi moves the phone to the second data connection. Google says this happens automatically, in real time.
Google Fi ran on more than one network when it launched as Project Fi in 2015. That switching ended after U.S. Cellular left as a partner, which left T-Mobile as the host network. This launch brings a second 5G network back.
Google has not said which carrier runs the second network. Tom’s Guide also reports the partner is unnamed. BestCellular.com will not guess. We will update this page if Google names it.
Who gets Google Fi network switching
- Phones: Pixel 9 and newer, starting November 10, 2026.
- SIM: Fi must be active on eSIM. Turn off any non-Fi SIMs.
- Coverage: Google says it is not available in all areas yet.
- Plans: Google says every Fi plan includes access to both 5G networks.
Other Google Fi changes announced
Wi-Fi Auto Connect+. Fi now joins Wi-Fi in millions of locations without a login. Google says the connection is encrypted through the Fi Virtual Carrier Network. It works on Pixel 5a and newer today. Google says it is rolling out to select Samsung phones on One UI 9 or later and to Motorola phones.
International. Network switching and Wi-Fi Auto Connect+ also work abroad on Unlimited Premium and Flexible plans at no extra cost. High-speed data abroad is up to 50GB per person on Unlimited Premium and 15GB on Flexible, then 256 kbps.
Ask Fi. A new AI support agent in the Fi app handles connection and billing questions.
What Google Fi network switching means for your number
Your Google Fi account number and transfer PIN do not change. You still get both from the Fi app or website under Account, Manage plan, Leave Google Fi, Transfer your number. Number Lock still blocks a port-out until you turn it off.
What to do now
- Check your phone. Network switching needs a Pixel 9 or newer. Older phones keep their current service.
- Use eSIM. If Fi is on a physical SIM, move it to eSIM in the Fi app. Turn off other SIMs.
- Look up your Fi details. See the Google Fi page on BestCellular.com for the account number, transfer PIN and network.
- Leaving Fi? Follow the port-out steps. If a transfer fails, read why a port-out gets rejected.
Google Fi network switching FAQ
Does Google Fi switch networks again?
Yes. Starting November 10, 2026, Google Fi switches Pixel 9 and newer phones between two 5G networks and Wi-Fi hotspots, according to Google.
What networks does Google Fi use now?
T-Mobile is Fi’s main host network. Google says Fi now includes “two of America’s fastest 5G networks” but has not named the second carrier.
Does Google Fi network switching work on iPhone?
Google’s announcement lists Pixel 9 and newer only. It does not mention iPhone or Samsung for network switching.
Does the Google Fi super network cost extra?
No. Google says every Fi plan includes it. Google announced no price change.
Do I need a new transfer PIN after the change?
No. Your Fi account number and transfer PIN work the same way. Request them in the Fi app when you are ready to switch carriers.
Verified November 10, 2026. BestCellular.com is an independent reference site operated by Assertive Holdings, LLC. It is not a wireless carrier and does not sell service. Google Fi and Pixel are trademarks of Google LLC. All other trademarks belong to their owners.