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This guide shows you how to reliably confirm you’re actually running Google Home 3.40, where the official changelog appears for Android and iOS, and how to verify what changed in real-world use once you update.
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What the Google Home app version number really tells you
App version numbers like 3.40 usually map to a bundle of improvements: fixes, performance work, and sometimes small feature adjustments. The same “3.40” label can still include variations by platform (Android vs iOS), app storefront region, and device model.
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That’s why the most reliable way to answer “what’s new” is to combine two checks: the official release notes and the behavior changes you can reproduce inside your home setup.
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- Programmable smart thermostat that learns your schedule and the temperatures you like and programs itself to help you save energy and stay comfortable
- Home/Away Assist automatically adjusts itself to an Eco Temperature after you leave, so you don’t heat or cool an empty home; remote control lets you change the temperature from anywhere on your phone, laptop, or tablet[1]
- With Energy History, just check your phone to see how much energy you used and why, or use Quick View on the display to reach Energy History, settings, or your schedule; the Nest Leaf appears when you choose a temperature that saves energy
- Smart thermostat with HVAC monitoring, which looks out for your heating and cooling systems; sends an alert if something doesn’t seem right, along with helpful reminders to make maintenance easier[2]
- The Nest Learning Thermostat works with the Nest Temperature Sensor (sold separately) to help make sure a certain room is the exact temperature you want it to be
How to confirm you’re on Google Home app 3.40 (Android + iOS)
Before chasing changes, confirm the version displayed in the app matches 3.40. Then confirm you’ve actually updated from the app store (not just “opened” the app after an older install).
On Android
Use one or both methods below. The settings path can vary slightly by OEM skin, but version visibility is consistent.
- Open the Google Home app.
- Tap your profile icon (or Initials) in the top-right.
- Go to Settings → look for About or a Version entry.
- Also check Google Play Store → search Google Home → confirm it shows version 3.40.
On iPhone and iPad
iOS typically shows the version inside the app and you can cross-check it in the App Store.
- Open the Google Home app.
- Tap your profile icon → open Settings.
- Look for About or Version and verify it shows 3.40.
- Open the App Store → go to Google Home → confirm the version is 3.40.
Where to find the official changelog for Google Home 3.40
The most dependable source is the official update notes shown in the app stores. They’re not always detailed, but they’re the only place Google controls the exact wording.
Google Play Store (Android)
When an update rolls out, the Play Store listing may show a “What’s New” area. That text is the official changelog.
- Open Google Play Store.
- Search Google Home.
- Open the listing and find the What’s New / Update notes section.
- Confirm the notes correspond to update version 3.40.
Apple App Store (iOS)
On iOS, the changelog is often shown right on the update prompt or within the listing.
- Open App Store.
- Search for Google Home.
- Check the update information panel for Version and What’s New.
- Match the text with 3.40.
How to tell what changed after updating to 3.40
Even if the changelog is short, you can still confirm whether 3.40 changed anything by running a few quick, high-signal checks. This method is faster than guessing—and it catches issues too.
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Check UI and navigation changes
Open Devices, Rooms, Automations, and Home settings. Look for renamed pages, moved controls (like device details or routine controls), and any new prompts you didn’t see in the prior version.
Verify automations still trigger
Pick one automation you can safely test (for example, a light on a schedule). Run it manually once, then confirm it triggers as expected on the next scheduled event.
Verify discovery and connection stability
Add one known device you can verify quickly (like a smart plug or light) or re-open the device details page and confirm it updates status without long loading.
Test remote access behavior
If you use away mode, remote control, or travel setups, test from cellular data (not Wi‑Fi) to ensure the app can reach your devices when you’re outside your home network.
Common categories of changes in Google Home updates
Google Home release bundles often fall into predictable buckets. Use this list as a checklist while you compare your old behavior to the 3.40 experience.
Stability and performance fixes
Expect improvements that reduce app freezes, shorten device-detail load times, and fix edge cases where devices show stale status.
Smart device compatibility adjustments
Updates may improve how the app handles particular device types (lights, speakers, thermostats, cameras, or locks), especially when firmware updates happen in parallel.
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- Programmable smart thermostat that learns your schedule and the temperatures you like and programs itself to help you save energy and stay comfortable
- Home/Away Assist automatically adjusts itself to an Eco Temperature after you leave, so you don’t heat or cool an empty home; remote control lets you change the temperature from anywhere on your phone, laptop, or tablet[1]
- With Energy History, just check your phone to see how much energy you used and why, or use Quick View on the display to reach Energy History, settings, or your schedule; the Nest Leaf appears when you choose a temperature that saves energy
- Smart thermostat with HVAC monitoring, which looks out for your heating and cooling systems; sends an alert if something doesn’t seem right, along with helpful reminders to make maintenance easier[2]
- The Nest Learning Thermostat works with the Nest Temperature Sensor (sold separately) to help make sure a certain room is the exact temperature you want it to be
Account and sign-in reliability
Some releases include better handling for Google account transitions, family sharing changes, or home membership changes.
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Home and room management UI tweaks
Small UI changes often land here: clearer labels, better sorting, and more reliable grouping behavior for Rooms and device cards.
Permissions and background behavior
If you use background features (notifications, device discovery, or certain automation triggers), 3.40 may adjust permission flows or improve how background tasks run.
Android-specific notes for updating to 3.40
Android updates can behave differently depending on your OS version, battery optimization settings, and manufacturer background restrictions.
Make sure background restrictions aren’t blocking discovery
If you notice delays updating device status, check whether Battery optimization is enabled for Google Home.
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- Find Battery optimization → select Not optimized or All apps.
- Add Google Home to the exception list if it’s being restricted.
Watch out for multi-account and work profile setups
On phones with multiple profiles (work/personal), verify you’re using the correct Google account context inside Google Home.
Confirm location and Bluetooth permissions if discovery is involved
Some device types rely on local discovery flows. If you deny location/Bluetooth permissions, 3.40 may still work, but device setup and nearby discovery can be less reliable.
iPhone and iPad-specific notes for updating to 3.40
On iOS, the most common post-update issues are related to permissions, background app refresh, and notification delivery.
Check Background App Refresh
If device status feels slow to update or notifications don’t arrive, Background App Refresh is often the culprit.
- Open Settings → General → Background App Refresh.
- Find Google Home and ensure it’s enabled (not turned off).
Verify notifications permissions
Confirm Google Home notifications are allowed if you rely on alerts from cameras, doorbells, or sensors.
- Open Settings → Notifications.
- Select Google Home.
- Ensure Allow Notifications is enabled and that alert styles are set the way you want.
Re-check Local Network access when discovery fails
Some setups require local network access for smooth device discovery. If pairing is flaky after updating, confirm Local Network permission for Google Home.
- Open Settings → Privacy & Security → Local Network.
- Enable access for Google Home.
Troubleshooting when Google Home 3.40 doesn’t behave normally
If 3.40 introduces problems—or if an older issue only becomes noticeable after the update—use a structured approach. Start with the most common fixes that don’t require removing devices.
Fast checks (do these first)
- Restart the app: fully close Google Home and reopen.
- Reboot your phone: this clears stuck network or background tasks.
- Test Wi‑Fi vs cellular: determine whether the issue is local connectivity or remote access.
- Confirm device firmware is current: some devices update firmware independently and can affect compatibility.
Clear cache/data (Android)
On Android, clearing cache can fix corrupted app state without fully removing the app.
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- Select Storage.
- Tap Clear cache (try this before Clear data).
If the issue persists, you can clear data, but you may need to sign in again and recheck home membership behavior.
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- ENERGY STAR certified smart thermostat for home that helps you save energy and stay comfortable.Connectivity : Wi-Fi - 802.11b/g/n 2.4 GHz, 802.11a/n 5 GHz Wi-Fi., Wireless interconnect : Bluetooth Low Energy Please refer to the product description section below for all applicable legal disclaimers.Product note: You can also check your system’s compatibility before purchasing a Nest thermostat with our online Nest Compatibility Checker on the Google Nest support page
- The Nest Thermostat is designed to work without a C wire in most homes, but for some systems, including heating only, cooling only, zone controlled, and heat pump systems, you’ll need a C wire or other compatible power accessory
- Nest Thermostat turns itself down when you leave, so you don’t waste energy heating or cooling an empty home. Lock feature: No
- Programmable thermostat that lets you create an energy efficient schedule in the Google Home app on your Android or iPhone
- Remote control lets family members change the thermostat temperature from anywhere on a phone, laptop, or tablet[1]
Re-enable permissions (Android and iOS)
If discovery or status updates stall, review permissions again in case 3.40 reset or changed prompts.
- Android: check Location/Bluetooth permissions if nearby setup is involved.
- iOS: check Local Network and Background App Refresh.
Re-link problematic devices
If one device is misbehaving while others work, remove and re-add that device type using the in-app flow for your device vendor (camera, thermostat, etc.). Don’t remove everything unless you have to.
If automations fail
- Open Automations and confirm each rule is still enabled.
- Verify the schedule/time zone matches your current travel location.
- Test by triggering the automation manually, then wait for the next scheduled run.
Security, permissions, and device stability after a 3.40 update
Updates can change how the app requests or uses permissions. A good post-update habit is to quickly audit what Google Home can access.
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- Notification permissions for sensors and cameras.
- Local Network access on iPhone and iPad.
- Battery optimization exclusions on Android.
- Account access if multiple people manage the home.
Watch for unusual prompts
If you see repeated sign-in prompts, unexpected device changes, or a sudden loss of home membership, treat it like a account-sync issue. Verify your Google account is the same one tied to the home.
Alternatives if 3.40 is temporarily buggy
If version 3.40 causes a problem you can’t fix immediately, your goal is to regain control quickly while you wait for a hotfix.
Use device vendor apps for critical control
For lights, cameras, or thermostats, the vendor’s own app can often provide interim control and monitoring while Google Home stabilizes.
Check for a 3.40.x patch
Store rollouts sometimes include point releases (for example, 3.40.1 or similar internal build bumps). Keep an eye on the Play Store/App Store update list.
Don’t downgrade unless you can confirm build availability
Rolling back on Android isn’t always straightforward, and on iOS Apple restricts older installs. When possible, fix forward: permissions, cache, and device re-linking are safer than version rollback.
FAQs about Google Home app 3.40 on Android and iOS
How can I see the exact changes in Google Home 3.40?
Check the What’s New / Update notes panel in the Google Play Store (Android) or App Store (iOS). Then verify behavior by testing automations, device status, and remote access.
Why don’t I see a detailed changelog for version 3.40?
Some store notes are intentionally short and may only list categories like bug fixes or performance improvements. That’s normal—your best option is behavior verification plus quick troubleshooting tests.
Will Google Home 3.40 affect my existing automations?
Most updates should preserve automations. If rules don’t trigger after updating, confirm they’re still enabled, check time zone/schedules, and verify device status updates properly.
My device status is delayed after upgrading to 3.40. What should I do?
Restart the app, reboot the phone, and confirm network permissions/background refresh settings (Android battery optimization or iOS Background App Refresh). If only one device is affected, remove and re-add that specific device.
Does Google Home 3.40 include new features I’ll instantly notice?
Not always. Many releases focus on stability and compatibility. If the app store notes are minimal, changes may show up only during device discovery, updates, or automation execution.
Bottom Line
To know what’s new in Google Home app 3.40 for Android and iOS, you need both the official app-store changelog and a quick set of in-app tests that reflect your real devices and automations.
Confirm your exact 3.40 install, check store update notes, then verify triggers, status refresh, and remote control. If something feels off, permissions and background behavior are usually the fastest path to a fix.
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