Can I power the photon with the standard small square USB charger that comes with an iPhone 6/6s? I believe the voltage output on iPhone chargers is 5V, and the USB connection to my computer is ~4.8V, so I assume it should be OK to use an iPhone charger to independently power the photon, but I just wanted to confirm. Thanks.
Yes. iPhones ship with a 1A USB charger (5V). The Particle Photon data sheet recommends 1A minimum, so you should be fine.
Thanks for the quick response.