Ugh, missing Gmail notifications on your iPhone is so annoying! It's like shouting into the void and not getting a reply. Let's see if we can get those pings back.
First off, the super basic stuff: did you accidentally mute notifications for Gmail in the iPhone's Settings app? Go to Settings > Notifications > Gmail and make sure "Allow Notifications" is toggled on. While you're there, double-check the Alert styles, sounds, and badges to make sure they're set how you like them.
Also, sometimes Gmail itself can have its own notification settings. Open the Gmail app, tap the three lines in the top left, scroll down to "Settings," and then tap on your email address. From there, make sure "Notifications" is set to "All New Mail" or whatever suits you.
Another thing that can sometimes cause issues is "Background App Refresh." If that's turned off for Gmail (Settings > General > Background App Refresh), your phone might not be checking for new emails when you're not actively using the app. Make sure it's enabled for Gmail (either on Wi-Fi or Wi-Fi & Cellular).
Low Power Mode on your iPhone can also sometimes temporarily pause background app activity and notifications to save battery. If you've got Low Power Mode on (Settings > Battery), try turning it off temporarily to see if your Gmail notifications start coming through.
Finally, it might sound silly, but sometimes just deleting the Gmail app and then reinstalling it can fix weird glitches. It's like giving the app a fresh start.
If none of these solutions work, you can follow for more details instruction below.
Gmail notifications not working on iPhone - How to fix