Refer the below instructions to know how to update apps on Android:
Step 1. From the main menu of your phone, tap on “Google Play Store”.
Step 2. At the top, you can see an icon represented by three lines, tap on that.
Step 3. From the drop-down menu, select “My Apps & Games”.
Step 4. The list of all the games and applications installed in your Android phone will be shown.
Step 5. A separate list will be present which would show all the applications which need updating.
Step 6. Tap “Update” option in front of the particular application which you want to update.
Step 7. The progress will be displayed on the screen and once the Android apps update is over, you will be notified.
You can follow these steps to Android update all apps.