A:AnswerThis is a very good option for an iPhone 11. If you are looking for avaliability, Best Buy has some very good online tools to help you out with that. You can also call your nearest Best Buy and they would be able to supply you with that information as well.
A:AnswerThis will not charge the switch. You can use our official Nintendo Switch charger to do so, however: https://www.bestbuy.com/site/anker-powercore-20100-mah-portable-charger-for-the-nintendo-switch-and-most-usb-enabled-devices-black/6277000.p?skuId=6277000
A:AnswerYou can use your wall charger that came with your phone to charge the PowerCore.
It will charge your smartphone around 7-8 times until the powerbank needs to be charged again.