How to Enable Power Saving Mode in Galaxy S4
Other than Power Saving Apps, Samsung Galaxy S4 has a built in Power Saving mode and you can enable CPU Power Saving, Screen power saving, Turn off ...
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QR Codes (Quick Response) are getting more popular and you can easily scan these barcodes on your Android device to see what is behind these codes. To scan a QR code on Android devices, do as follows:
1. Go to Play Store and download and install Barcode Scanner (Download Barcode Scanner from Google Play)
2. Now open the app and face the camera in front of the QR code to scan (Place a barcode inside the viewfinder rectangle to scan it.)
3. When identified the barcode, tap any of available actions (open a website, call a number, Go to Google Shopper, Send a text message...)