Your MacBook Air's Wi-Fi drops are probably fixable without a genius.

Most Wi-Fi drops on a MacBook Air running Sequoia come down to one of three things: network congestion, a stale DNS cache, or a wonky Wi-Fi channel.

Start with the router. Reboot it. If that fixes it for a day, your router’s firmware might be old or the channel it’s using is crowded. On the Mac, hold Option and click the Wi-Fi icon in the menu bar, then open Wireless Diagnostics and go to Window > Scan. You’ll see which channels are congested and which are clean. If your router supports 5 GHz, make sure you’re on that band.

Next, reset the Mac’s network settings. Go to System Settings > Network > Wi-Fi, click the three dots next to your network, and choose Remove Service. Then re-add it. Also try flushing DNS—open Terminal and type sudo dscacheutil -flushcache; sudo killall -HUP mDNSResponder. This clears out stale entries that sometimes cause drops.

Sequoia had a few early Wi-Fi quirks. If you’re on an Intel Mac, check if “Limit IP Address Tracking” in Wi-Fi settings is on—turning it off sometimes helps. And make sure macOS is up to date, because 14.x and 15.x patches fixed specific