To update the WeChat app, the process typically varies depending on the device you are using. For users on Android devices, the easiest way is to open the Google Play Store, navigate to the "My apps & games" section, and look for WeChat in the list of available updates. If an update is present, you can simply tap on the "Update" button.
For iPhone users, updates can be found in the App Store. Open the App Store, tap on your profile icon in the top right corner, and scroll down to see any pending updates. If WeChat is in the list, you can tap "Update" next to it.
It is also advisable to enable automatic updates if you prefer to keep the app up to date without manual intervention. For the most accurate instructions specific to your situation, it may be helpful to check the official WeChat website.