If Gmail is not updating on your iPhone, start by ensuring a stable internet connection via Wi-Fi or mobile data. Refresh the Gmail app by swiping down to manually update the inbox. Check for updates in the App Store and install any pending Gmail app updates. If the issue persists, remove and re-add your Gmail account by navigating to Settings > Mail > Accounts. Additionally, enable Background App Refresh in Settings > Gmail to ensure the app syncs in the background. These steps typically resolve Gmail update issues on iPhones.
How to Fix Gmail Not Updating on iPhone: Easy Troubleshooting Steps