iOS 13 compatible with iPhone 6S and later, but iPhone 6 and 5S owners are out of luck - CNET
Will iOS 9 slow down my iPhone 4s or iPhone 5/5s? Perhaps a little (Video) - 9to5Mac
Apple To Drop the iPhone 5s & 6: iOS 13 Minimum Requirement is iPhone 6s
iOS 13 : les iPhone 5S, 6 et SE ne seraient pas compatibles
Apple Hub on Twitter: "According to French blog https://t.co/hbEC1Xd6j8, iOS 13 will not support the iPhone 5s, iPhone 6, iPhone 6 Plus, and iPhone SE. The 1st gen iPad Air and iPad
iOS 13 : voici la liste des iPhone compatibles
Apple présente iOS 13 - Apple (FR)
Màj - iOS 12.5.1 disponible pour les anciens iPhone