Mobile vs Desktop Reaction Time
Hardware adds latency the human body never recovers. The difference between mobile and a wired high-refresh desktop is real, measurable and consistent — and worth understanding before comparing reaction-time scores across devices.
Latency Breakdown
| Component | Wired Desktop 144Hz | Modern Smartphone |
|---|---|---|
| Display refresh | ~3 ms | ~8–16 ms |
| Input scan | <1 ms | ~10–20 ms |
| OS event delivery | ~2 ms | ~5–10 ms |
| Total added lag | ~7 ms | ~25–40 ms |
What This Means For Your Score
A player who tests at 200 ms on a wired desktop will typically test at 215–230 ms on the same setup measured on their phone — purely because of the hardware lag. The brain and finger are doing identical work; only the measurement pipeline is slower.
Which Setup To Use
- Daily training and casual ranking → mobile is excellent.
- Personal-best chasing and precision leaderboard → wired desktop, high refresh.
- Comparing your score to a friend's → use the same device class.
- Tracking long-term progress → stick to one device for consistency.
Why SERO Treats Both Fairly
SERO measures at the input event itself and adjusts scoring within the achievable precision range of each device. The leaderboards mix both — and many of the top scores come from mobile players who simply trained more.
Frequently Asked Questions
Should I use desktop or mobile for SERO?
Desktop with high refresh for absolute best scores, mobile for daily training and convenience.
Why is my phone slower than my PC for the same test?
Touchscreen latency and lower display refresh add 20–30 ms vs a wired desktop.
Does an iPad react faster than a phone?
Marginally — the larger touch panel scans slightly faster, but the difference is under 5 ms.
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