VIVO Y55S HAS LOW SOUND QUALITY.THE DESIGN OF PHONE IS QUITE POOR.I AM USING THIS PHONE FOR 3 MONTHS.IT HAS AVERAGE INTERNAL STORAGE OF 16 GB. ALSO IT LACKS FINGERPRINT SENSOR.IT HAS BATTERY OF 2750 MAH. WHICH IS NOT UPTO THE MARK. THE 5 MP SELFIE CAMERA WON’T BE SETTING BENCHMARK EITHER. IT IS GOOD FOR TAKING LOW LIGHT SELFIES ONLY