Apple has added persistent ads to iOS, promoting its own products and services, which has driven users crazy. These ads appear in the Settings app and cannot be dismissed, sticking around for weeks or even months. The ads promote services like iCloud+, Apple Music, and AppleCare+, and users are frustrated with the lack of control over these promotions. This move is seen as part of Apple's increasing emphasis on its services, which may come at the cost of user experience.