You can uninstall Apps that you've downloaded and installed on your Android 4.x smartphone to reclaim space on your device, remove app conflicts and prevent the app from running in the background. System apps that came with the device, however, cannot be uninstalled. A workaround to this restriction is disabling the app, but this option isn't always available and does not free up storage space.
Tap "Settings" from the app list and then select "Apps," "Applications" or "Application Manager," depending on your Android version or smartphone customization. Tap the app to open the details screen from the Downloaded list, select "Uninstall" and then tap "OK" to remove the app. If there is no option to uninstall the app, then the app cannot be removed. However, there may be an option to uninstall updates or disable the app. You can also choose to clear data or cache to free up storage space and remove personal settings and data.
Google Play Store
Google Play Store offers a secondary method to uninstall apps. Open the Play Store, tap "Google Play" and then select "My Apps." Tap the app you wish to remove, tap "Uninstall" and then select "OK" to uninstall the app. You can also select "Update" to install app updates that could fix existing problems.