Some permission is sought after installing any app in the smartphone. Even if you delete the app from the phone for some reason, these apps continue to collect personal information. You can easily know which apps are collecting personal information. For this, you just have to follow some steps.
Go to the setting of the smartphone.
Here you will see the option of Google Services.
Select it and go to Manage Your Google Account section.
After this select data and privacy.
At the bottom, you will see the option of web and app activity.
You will see the list of apps and services that have access to your Google account. In addition, all the apps deleted from your phone will appear in gray color. Select these apps and delete their activity. After doing this, those apps will not be able to collect your personal information. Please note that if you have only deleted the app and have not removed the activity, then the app developers may still have access to your personal data.