Fourth generation iPhone. Repair is straightforward, but the front glass and LCD must be replaced as a unit. GSM / 8, 16, or 32 GB capacity / Model A1332 / Black and White.

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iPhone 4 with 0.07A

Hi, Ive just purchased a charger doctor so I could see what my iphone battery's are like. I've plugged one end into my laptop and the other end into an iphone 4 and it shows 4.99 v and 0.07A What does this mean? Is the battery rubbish?

Many Thanks


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You are seeing the voltage (4.99v) and the current draw of your iPhone (0.07mA).

In its self it's not telling you much, as the state of the battery will impact how much power is needed to charge the battery. So if the battery is charged then it wouldn't have much draw which is the case here.

This tool is more useful in checking the USB ports ability to supply power and if the device is pulling to much. It's not the type of tool I would use to test my phones battery.

Here is a better tool: Battery Life which you can run from your iPhone or iPad.

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Thankyou Dan


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Using a wall charger is more reliable for power input.

On computer you can check battery health via 3utools on windows or coconutbattery for Mac.

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@wenx & @benjamen50 - Ben, I totally forgot about using coconutBattery and here's a good writeup on using it Coconut Battery Now Supports iOS Devices running from your laptop.

It's a great app for the MacBook/MacBook Pro battery monitoring and the newer version adds iPhone & iPad support. I use it all of the time on the MacBook Pro's I support.

On my own iPhone & iPad I was already using Battery Life which is why I aimed Sarah that way. In either case they are both Free!

As for 3utools I think thats a bit heavy for most. Sometimes the simpler tool is the better.


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Sarah will be eternally grateful.
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