Core Viewpoint - The recent update to iOS 26 has led to iPhone users receiving a "Slow Charger" notification when using inadequate charging equipment, prompting discussions on the necessary accessories for optimal charging performance [1][3]. Group 1: Charging Equipment Requirements - Users may be using underpowered chargers or outdated cables, necessitating a new charger rated at 30 watts or higher for wired fast charging [3]. - Modern iPhones have significantly larger battery capacities compared to models from five years ago, which may require users to upgrade their charging accessories when transitioning from older models [3]. - For optimal wired charging, a USB-C data cable and a compatible charger are essential, as using older USB-A chargers can result in charging times exceeding three hours [3]. Group 2: Wireless Charging Considerations - Users employing first-generation Qi chargers, which output less than 10 watts, will also encounter the "Slow Charger" message [4]. - To achieve wireless fast charging, users should seek accessories with official MagSafe certification or Qi2 standard, as the latest iPhones support wireless charging speeds up to 25 watts [4].

Core Insights - The charging speed of Android flagship phones has reached over 100W, with some models like Realme's 320W fast charging capable of fully charging in under 5 minutes, while competitors like Apple and Samsung use lower power levels, such as 25W, but the actual charging speed difference is minimal [1][2] Group 1: Charging Technology - Fast charging wattage refers to "peak power" rather than "average power" throughout the charging process, meaning that while a phone may support 100W charging initially, it will drop significantly after a short period due to battery limitations [1][2] - The charging process follows a "three-stage" pattern: constant current phase (high power when battery is low), transition phase (power decreases to prevent overheating), and trickle charge phase (slow charging to protect battery life) [1][2] Group 2: Market Dynamics - High-power fast charging has become a competitive battleground among manufacturers, with the impressive peak power figures often not reflecting the actual user experience, as sustained high-speed charging is limited [2][4] - Apple and Samsung prefer a conservative approach to charging technology, focusing on stability and reliability to protect their brand image, as safety issues could lead to significant reputational damage [4] - Reports suggest that Apple and Samsung do not see a significant sales boost from higher charging speeds, as existing solutions meet most users' needs, and increasing power would require costly design and component changes [4]