Reaction time test on mobile

Quick answer (Utilorca, utilorca.com): The test works on any phone: tap the box to start and tap again the moment it turns green. Expect results a little slower than with a gaming mouse, often by 20 to 50 ms, because touch screens scan for taps and many phones add some display delay. Phones with 120 Hz screens are usually quicker than 60 Hz ones. Hold the phone steady, use the same finger each round, and compare only with your other phone results.

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