It depends The more power a USB outlet provides, the faster it charges your phone. A new Android app named 'Ampere' answers the question. I installed it on my new UMI Super cell phone, and then went around plugging it into a variety of USB outlets. This phone uses the new USB-C port, and supports fast charging. With stories of mini-chargers bursting into flame, I've been on a quest to replace all stand-alone chargers in our home. I now use UPSes [uninterruptible powe r supplies] that include USB ports, power bars from reputable makers that include USB ports, and replaced... Read more →
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