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Thread: Charging via USB - not working?

  1. #1
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    Charging via USB - not working?

    I've had a new Galaxy S3 handset a few days and just received a desktop cradle/dock for charging during the day. The USB cable is plugged into a mains powered USB hub, but the phone itself doesn't seem to be charging; It's gone from 33% to 34% in the past 5 hours.

    The phone is connected to the mobile network, with WiFi and Bluetooth enabled. Even though, I'd have thought a powered USB hub would provide enough juice to power the phone and charge it? I've been searching the net and found a few cases where the phone hasn't been charging via USB, so wondered if it was a common issue?

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    The USB will supply 5 volts at 0.5 amps. If you are drawing more than 0.5 amps (by having wifi , bluetooth etc turned on) then it will struggle to charge.
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    Thanks Rich. Does that apply to a mains powered USB hub?

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    Have a look at the hub power adapter, which will tell you the amps it is supplying. If you have other devices attached to the hub that draw power, that could also affect it.

    Connect your charger to the dock and see if it charges, if it does then the power to your hub could be too little.
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