Your Pixel Watch 3 (45mm) is supposed to take calls and texts on its own, but right now the cellular connection just is not cooperating. Maybe the signal bars are gone, maybe calls keep routing back to your phone, or maybe the eSIM line vanished after an update. The good news is that most LTE problems on this watch come down to a setting, a stale connection, or an eSIM profile that needs to be re-added, and you can work through all of those yourself.
Before you start, one thing matters more than anything else. Cellular only works on the LTE variant of the Pixel Watch 3 (45mm). The fixes below assume you have that model, an active 4G LTE wireless service plan (sold separately) on a carrier that supports the watch, and an Android phone running Android 10.0 or newer paired through the Google Pixel Watch app. iPhones are not supported. Work through the steps in order, since the easiest and safest fixes come first and the full reset is saved for last.
Confirm your watch and plan can actually use cellular
It sounds obvious, but the most common reason cellular "stops working" is that the unit never had it. A Wi-Fi-only Pixel Watch 3 (45mm) has no cellular hardware at all, so if you are unsure which variant you own, that is the first thing to settle. Cellular also depends on a separate 4G LTE wireless service plan on a carrier that supports the watch.
For full talk, text, and data, your watch and your Android phone generally need to be on the same carrier network. Once you have confirmed all of that, check the simple connection basics. Make sure Airplane Mode is turned Off on both your phone and your Pixel Watch, that Bluetooth is on, and that your phone itself is connected to the Internet. Clearing these basics first saves you from chasing a deeper problem that does not exist.
Give the watch a clean restart
A restart is the single fastest way to clear temporary Bluetooth, connection, and LTE glitches that build up over time. The watch hands cellular back and forth with your phone constantly, and a quick reboot resets that whole handshake.
- 1.On your Pixel Watch, press and hold the crown for 3 seconds.
- 2.Scroll down and tap Restart.
Give the watch a moment to come back online, then check whether the cellular signal returns. If it does not, move on to the actual mobile settings.
Check the mobile settings and SIM status on the watch
The watch has its own cellular controls, separate from your phone, and a single wrong setting here can silence LTE entirely. The key is to make sure the watch is allowed to switch to cellular on its own.
- 1.On the watch, swipe down then tap Settings.
- 2.Tap Connectivity, then tap Mobile.
- 3.Confirm the status is set to Automatic.
While you are here, it is worth verifying that the eSIM line is recognized. Go to Settings > Connectivity > Mobile > SIM status, where your EID appears at the bottom of that menu. Seeing the SIM status screen populate is a good sign that the watch knows about your line, which narrows the problem down to activation or software.
Re-add a deleted or inactive eSIM profile
If the eSIM profile was removed (sometimes during troubleshooting, a reset, or a carrier change), the watch simply has no line to connect to. Wear OS includes a built-in flow to put the profile back.
- 1.On the watch, swipe down and tap Settings.
- 2.Tap Connectivity, then Mobile, then Advanced.
- 3.Follow the on-screen instructions to re-add the eSIM profile to your watch.
Keep in mind that some carriers may require that you call to reactivate the eSIM before it will work again. If the re-add flow finishes but you still have no service, a quick call to your carrier to confirm the line is active is the natural next step.
Manage the mobile plan from the phone companion app
Sometimes the cleaner path is to set up or move the mobile plan from your phone rather than the tiny watch screen. The Google Pixel Watch app on your paired Android phone handles this.
- 1.On your phone, open the Google Pixel Watch app.
- 2.Tap Connectivity, then tap Mobile network.
- 3.For Google Fi, tap Connect to Google Fi, then Connect to Fi, then Done. A Google Fi profile is created on the watch.
Other carriers' activation instructions vary by region and provider, so if you are not on Google Fi, follow your carrier's own steps from this same screen. The companion app gives you a larger, easier interface to complete an activation that may have stalled on the watch itself.
Update the watch software
Cellular reliability often depends on the Wear OS version your watch is running, and an outdated build can cause connection problems that a patch later fixes. Installing the latest update is a low-risk move that frequently resolves stubborn LTE behavior.
- 1.On the watch, swipe down to tap Settings.
- 2.Tap System, then tap System updates to check for and install any available Wear OS update.
Keep the watch charged and on Wi-Fi during this process. The watch reboots on its own once the update finishes. Eligible Pixel Watch devices receive Wear OS 7 via the June 2026 software update in a phased rollout, so if you do not see it yet, it may simply not have reached your watch.
If you want to confirm what you are currently running, you can view it under Settings > System > About > Versions.
Force restart a frozen or unresponsive watch
If the screen is blank, frozen, or completely unresponsive, a normal restart will not be possible, and you will need the harder force-restart sequence instead. This is safe and does not erase anything; it just forces the watch to power-cycle.
- 1.Long press the crown and side button together for about 35 seconds (it may take longer).
- 2.Hold until the 'G' logo appears on the screen.
The watch will then restart on its own and should be usable again. Once it is back, recheck your cellular signal and step through the mobile settings above if needed.
Reset and unpair as a last resort
If cellular still fails after everything above, a factory reset and fresh re-pair is the final option you can do yourself. This is destructive, so treat it as a genuine last resort. Warning: after you reset your watch to factory settings, all apps, settings, and data on your watch are erased, and the watch is unpaired from your phone.
You can start the reset from either the watch or the phone.
- 1.On the watch, swipe down and tap Settings, then choose Disconnect & reset and confirm.
- 2.Or, on your phone, open the Google Pixel Watch app and tap System > Reset and unpair watch.
After the reset, re-pair by following the standard Pixel Watch setup steps in the Google Pixel Watch app. If cellular still does not come back after re-pairing, contact your carrier to confirm the line and eSIM are active, then contact Google Pixel Watch support for further help.
Frequently Asked Questions
Does the Pixel Watch 3 (45mm) actually have cellular, or do I need my phone nearby?
The LTE variant of the Pixel Watch 3 (45mm) does have cellular and connects directly to your mobile carrier once you activate an LTE plan for the device. A Wi-Fi-only unit, however, has no cellular hardware, so it always relies on a paired phone or Wi-Fi for connectivity.
Why did my watch's eSIM line disappear?
An eSIM profile can be removed during troubleshooting, a reset, or a carrier change, which leaves the watch with no line to connect to. You can re-add it on the watch under Settings > Connectivity > Mobile > Advanced by following the on-screen instructions, though some carriers may require that you call to reactivate the eSIM.
Do my watch and phone have to be on the same carrier?
For full talk, text, and data on the watch, your Pixel Watch and your Android phone generally need to be on the same carrier network. Cellular also requires a separate 4G LTE wireless service plan on a carrier that supports the watch.
Will updating or resetting the watch delete my data?
A software update does not erase your data. It simply installs the latest Wear OS version and reboots when done. A factory reset is different, because after you reset your watch to factory settings, all apps, settings, and data on your watch are erased and it is unpaired from your phone, so only use the reset as a last resort.
What should I do if cellular still does not work after a reset?
If LTE still fails once you have reset and re-paired the watch, first contact your carrier to confirm the line and eSIM are active on their end. If the carrier confirms the line is fine, contact Google Pixel Watch support for further troubleshooting.
