Fix game lag: router distance, 5 GHz Wi-Fi and other devices
Ping is how long it takes for your game's requests to reach the server and come back. The lower it is, the smoother online games feel. Your home Wi-Fi setup is one of the things that can push it up.
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What the sources say
Ping is the round-trip time between your device and the game server, and lower is better.
A wired connection is the most stable option, because Wi-Fi is more exposed to interference. A phone usually can't use a cable, so the next best thing is a good Wi-Fi position.
Heavy use elsewhere on the same network, such as 4K streaming or large downloads, can hurt gaming performance.
What to do
Move closer to the router, ideally in the same room.
If your router offers a 5 GHz network, connect to that one.
Ask others at home to pause streaming or big downloads while you play ranked.
Check your ping in the game before an important match, if the game shows it.
Results vary by router, home and game. These steps can help, but they can't beat a slow or unstable internet plan.
We summarise these sources in our own words. Results depend on your phone, your network and the game, so treat these as things that can help, not guarantees. Nothing here is affiliated with any game or its publisher.