Normally it is a matter of a few seconds, doing the calibration clicking a round or two - but if the phone is faulty it is not possible to calibrate, and the process will go on for ever. In that case try to get the phone replaced by the seller (if you just bought it)
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Normally it is a matter of a few seconds, doing the calibration clicking a round or two - but if the phone is faulty it is not possible to calibrate, and the process will go on for ever. In that case try to get the phone replaced by the seller (if you just bought it)