
This is a battery optimization feature that makes your phone's battery last longer. Turn off Adaptive Battery or Intelligent Battery Instead of Apps & notifications, you could find Apps in some models. You can do this via Settings > Apps & notifications > Gmail > Force Stop. Tap the More icon (3 dots in the right) and select Sync now.If you've multiple accounts on your device, choose the one you want to sync. To turn it on again, tap on Automatically Sync Data.On that page, scroll down and tap Automatically Sync Data to turn it off. Then, Scroll down and tap Accounts or Users & accounts. Then, scroll down the list of apps to find Gmail. Launch the Settings app and select Apps & notifications. If Gmail isn't a default app on your phone, you can uninstall it. To re-enable it, click Enable on the same page. Then, go through the list of apps to find Gmail. Open the Settings app, and tap on Apps & notifications. Problem still persists, you can consider disabling the Gmail app to reset it. If, after trying one or more fixes above, the Gmail notifications not working

The solution is to get the latest version of the OS. If your phone's OS needs an update, you may not be able to receive Gmail notifications. Under the Updates section, find the Gmail app and tap Update. Simply open your Google Play and tap on the Menu icon (the 3 horizontal lines) in the top left.
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To fix the issue, you'll need to get the latest update for the messaging software from Google. If your Gmail app is out of date, the problem of Gmail notifications not working may happen. Update your Gmail app or the System's software You can also turn power saving mode off in Settings>Battery. You'll see the Battery Saver option in the tray tap on it to disable the feature. The easiest method is to swipe down the Home screen to reveal the icons for various features. Generally, you can turn off power saving mode in Settings. You can do this in various ways, depending on your smartphone's model and brand.
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The experience can be disconcerting if you're expecting an important message that needs to be replied to immediately, but you couldn't do so because you are not getting Gmail notifications when the email came in. But there could be times when you face the issue of Gmail notifications not working. Gmail helps make communication with friends, family, work colleagues, and business partners. It's a messaging app that comes preloaded on many smartphone models, including your TECNO, Infinix, and itel. Gmail is one of the most popular apps globally, with over 1.5 billion active users worldwide.
