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Is it safe to charge my iPhone XS with the Samsung Galaxy S9's Adaptive Fast Charging Adapter instead of the 5 watt charging brick out of the box ? I'm aware that the Samsung Fast Charging Adapter won't give fast charging to the iPhone though and I'm using Apple's USB-A to lightning cable.
iPhone XS
Fast charge your iPhone
Use fast charge with iPhone 8 or later. You can recharge your iPhone up to 50 percent battery in 30 minutes.*
Fast charging gives you a quick and convenient way to recharge your iPhone 8 or later. Your iPhone fast charges up to 50 percent in 30 minutes when you use an Apple USB-C to Lightning cable and one of these adapters:
If you're not sure which Apple Power Adapter you have, check the wattage on the bottom of the adapter:
* Testing conducted by Apple in August 2017 using preproduction iPhone X, iPhone 8, and iPhone 8 Plus units and software, and in August 2018 using preproduction iPhone XS, iPhone XS Max, and iPhone XR units and software, with accessory Apple USB-C Power Adapters (18W Model A1720, 29W Model A1540, 30W Model A1882, 61W Model A1718, 87W Model A1719). Fast-charge testing conducted with drained iPhone units. Charge time varies with environmental factors; actual results will vary.
Fast charge your iPhone
Use fast charge with iPhone 8 or later. You can recharge your iPhone up to 50 percent battery in 30 minutes.*
Fast charging gives you a quick and convenient way to recharge your iPhone 8 or later. Your iPhone fast charges up to 50 percent in 30 minutes when you use an Apple USB-C to Lightning cable and one of these adapters:
If you're not sure which Apple Power Adapter you have, check the wattage on the bottom of the adapter:
* Testing conducted by Apple in August 2017 using preproduction iPhone X, iPhone 8, and iPhone 8 Plus units and software, and in August 2018 using preproduction iPhone XS, iPhone XS Max, and iPhone XR units and software, with accessory Apple USB-C Power Adapters (18W Model A1720, 29W Model A1540, 30W Model A1882, 61W Model A1718, 87W Model A1719). Fast-charge testing conducted with drained iPhone units. Charge time varies with environmental factors; actual results will vary.
It is safe to use it.
Charging the iPhone XS with Samsung Fast Charging Adapter
