Revamped version of the iPhone 3G with faster processing speeds. Repair of this device is similar to the 3G, and requires simple screwdrivers and prying tools. Model A1303 / 16 or 32 GB capacity / black or white plastic back.

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Why does the Power IC heat up?

if Power IC heats up.. do we need to replace power ic?

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Not necessarily. ICs, especially those that regulate voltage or amperage, will definitely get warm because they may need to shunt power. If you are concerned, my recommendation would be to search for the IC (type it's part number into the google search and try to match it) and find its specs. Many ICs commercially available have their specs available including operating temperature range. Measure the temperature of the IC and see if it falls within the manufacturer's specs. If you would like to point out which IC you are looking at we can try to help you Iidentify it!

Hope this helps, good luck.

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