POKEMON GO WILL SOON NOT BE COMPATIBLE WITH SOME IPHONE AND IPAD
Several devices from Apple will soon no longer support Pokémon GO. With a future update, Niantic will end support for devices that can not support iOS 11.
""With an upcoming update of Pokémon Go, we will end the maintenance of Apple devices that can not support iOS 11, such as the iPhone 5 and iPhone 5C. This change is the result of improvements to Pokémon Go that push the application beyond the capabilities of the systems of these devices. This change will take effect February 28, 2018. After this date, trainers using these devices may no longer have access to their Pokémon Go account, use their poképièces or items that are in their bag. They will have to turn to a suitable device to continue playing Pokémon Go""