FlyerTalk Forums - View Single Post - is using phone's GPS to track plane speed allowed during flight?
Old Sep 4, 2014 | 10:13 am
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gfunkdave
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It's probably not explicitly allowed but won't harm anything either. It probably won't work, in any case. The GPS chip in most phones needs a cell signal to give it its initial rough location before it can fine tune things.
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