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Old December 24th, 2013, 01:18 PM   #1 (permalink)
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Default Samsung/Apple charger protocol?

This has been bugging me since I got that first 2A car charger for my Note 3. As many do, it came with two USB sockets - one for Apple products and one for Samsung etc devices.

The book of words talks about Apple and Samsung protocols being different and hence the alternative USB ports. It suggested if you use the "wrong" port, charging will be slower.

Can anyone give me a technical rundown on what they are talking about with the protocols? (We aren't talking here about simultaneous use of both ports which is another matter.)

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Old December 24th, 2013, 01:32 PM   #2 (permalink)
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I'm not sure about apple, but Androids (the Samsung as well) generally use the standard USB protocol. That is 500mA froma usb port but can be higher by shorting out on of the contacts and pushing more juice.

iDevices may only allow for the base 500mA in which case it would charge more slowly if you plugged in the samsung. Even my OG Droid came with a 784mA charger. If I tried to charge it froma computer (500mA) it would charge more slowly. I've seen Android USB chargers all the way up to 2A (2000mA) for devices like my N7.

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Samsung Galaxy Note 3
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Samsung is coming back with its legendary phablet. The Samsung Galaxy Note 3 comes packed with the best of specs, featuring a 5.7-inch display, a Snapdragon 800 procesor, a 3200 mAh battery and all the specs you can expect from a top-end device.&nb... Read More

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