The problems that came up the most for Apple iPhone owners were issues relating to the battery and charging which was seen on 20% of repair tickets. Problems with the screen were next which included things like dead pixels and scratches on the display. This was followed by call quality. 17% of Apple iPhone owners had a problem with the phone during their first year of ownership, compared to 25% for LG owners, 31% for those toting a Samsung model, and 33% for those who purchased a Pantech branded smartphone. The latter two manufacturers were the only ones that scored below the average 29%.
As for the customer satisfaction numbers, Apple's score of 52% topped both Samsung and LG.The two Korean manufacturers scored 50% and 46% respectively. Samsung lagged miserably on the matter of needing a second repair with 44% of Samsung owners saying that their phone had to go under the knife screwdriver a second time compared to 25% of iPhone owners who reported a second problem with their phone.
source: Naver (translated) via electronista