How to Fix iPhone WiFi Keeps Disconnecting?

Frequent Wi‑Fi disconnects usually come from weak signal, router band steering issues, power-saving behaviors, or misbehaving saved network settings.

Restart iPhone and router (quickest stability win).
Forget the Wi‑Fi network and rejoin.
Turn off ‘Low Power Mode’ temporarily (Settings > Battery).
Check Wi‑Fi Assist (Settings > Cellular > Wi‑Fi Assist). If you see unexpected switching, test turning it off.
If your router has both 2.4 GHz and 5 GHz under one name, test splitting SSIDs (ask router admin).
Update router firmware and iOS.
Reset Network Settings if the issue persists across multiple Wi‑F networks.

Setting	Where	Why It Helps
Private Wi‑Fi Address	Wi‑Fi > (i)	Some routers fail to remember randomized addresses
Auto-Join	Wi‑Fi > (i)	Prevent iPhone from hopping to a flaky saved network
Wi‑Fi Assist	Settings > Cellular	Stops automatic cellular switching (helps diagnosis)