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The next generation of iPhone might require some fast charging accessories. According to Macotakara, Apple uses the "C-AUTH" specification for the 2018 iPhones, which allows the smartphone to recognize when it is connected to USB cables or chargers certified via the USB PD 3.0 standard. As a result, fast charging would only be possible with Apple's charging adapters or certified third party products.
More protection against defective products Apple could justify the adoption of certified USB-C chargers offering more security to iPhone users. The C-AUTH accessory makes it possible to uniquely determine the material identity of accessories to . This can help detect faulty parts or cheap and badly finished replicas. The risk of damage to the iPhone by potentially dangerous power adapters would be reduced.
Since USB PD 3.0 is enabled, the fast charge function is only available with 18 watts if the respective charger can be identified via C-AUTH. If authentication fails, charging is only possible with up to 2.5 watts.
The C-AUTH protocol was developed by the nonprofit organization USB Implementers Forum. Since Apple is a member of the organization, the implementation of the protocol is likely to occur in one of the future generations of iPhone.
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