It gets very terrifying when you are connected to your friends or parents's WiFi and suddenly out of nowhere, your Android Apps start to get updating themselves. Now, the problem is, these apps do not understand that this may lead to various personal problems. And morover, when it's not after your wish, then it need not get update. So, here is, I'm going to tell you all how to disable Auto updates of your Android Apps even when you are connected to Wi-Fi:
How to Disable Auto Updates of Android Apps from Google PlayStore when you're connected to WiFi:
Open the Google Play Store app and tap on the navigation drawer. Then choose Settings.
In the Play Store settings, tap Auto-update apps.
You'll see three options (which can be changed at any time): Do not auto-update apps, Auto-update apps at any time. Data charges may apply, and Auto-update apps over Wi-Fi only.
Choose the first one. Note that this means you will always need to manually update all apps in the future. If you still want apps to update automatically, just not on your data connection, select Auto-update apps over Wi-Fi only.
See, this are the easiest steps described above. No other person could tell you in a more simpler way. Just go and turn it off when you don't need auto updates. Till then, take care!