Response time
How long packets take to reach and return from the reference region.

A mobile 5v5 tactical shooter with vehicles, physics-heavy fights and quick rounds.
How long packets take to reach and return from the reference region.
Variations that can cause stutter and delayed hit registration.
Packets that fail to arrive. Measured in the iPhone app.
How the route reacts while the network is busy.
Your Wi-Fi or mobile connection and the path through your provider can affect this game. Lagcheck measures a regional reference route, not the private server for your match.
Practical tip: Test on the same iPhone and connection you use to play. If mobile data looks unstable, try steady Wi-Fi near the router.
A vehicle jumps position, aim responds late or a shot appears not to count. Download speed alone does not describe latency, jitter or packet loss.
No. The browser uses HTTPS to a regional reference endpoint. The iPhone app can measure UDP packet loss on its test route; neither result identifies the private server assigned to your match.