The majority of reviews for the Samsung Galaxy S4 on Amazon.com are generally positive, but there also mixed and negative reviews as well. Many people rate the device as having a powerful processor, the octa-core mobile CPU. They also rate the battery as long-lasting regardless of the processes taking place.
Others on Amazon.com complain of the plastic design and a complicated user interface. The reviews for the Samsung Galaxy S4 on PhoneArena.com are positive. Most customers praise the picture quality of the 2-megapixel front-facing camera as well as its video call quality. The owner satisfaction for the phone is above average when compared to previous models, as of 2015 according to the site. The owner satisfaction rating for the Samsung Galaxy S4 is 9.2, as of 2015.