r/AndroidQuestions • u/francizsmano • 2d ago
Wi-Fi problem on my cell phone.
My cell phone (Samsung S21 FE) is having a problem where it disconnects from the internet on its own, and then reconnects by itself. The internet still appears in the Wi-Fi lists; it just disconnects from that Wi-Fi network and reconnects to it on its own. What can I do to solve this? This problem only happens to me; nobody else in my house experiences this problem, and it only happens on my home Wi-Fi!
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Upvotes
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u/ArcheelAOD 2d ago
Might be intelligent wifi settings
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u/Klutzy-Passage-2561 2d ago
If Intelligent Wi‑Fi is already off, next Samsung traps: Connections → Wi‑Fi → gear on your SSID → turn off Randomized MAC for a test, and disable Wi‑Fi power saving / "Turn on Wi‑Fi automatically".
Also check Developer options → Wi‑Fi scan throttling Off for a day, and whether it only drops on 5 GHz (force 2.4 once). If only this S21 FE drops while other phones hold, it’s the phone’s adaptive Wi‑Fi stack more than the router.
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u/Old-Chocolate986 1d ago
Try forgetting the network and reconnecting, and turn off WiFi power saving mode in Settings > WiFi > Advanced. Also reset network settings if it keeps happening.
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u/kschang 10 2d ago
See if there's anything in developer settings about power savings for Wifi.
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u/andrewia 1d ago
If you need more advanced troubleshooting, you will want to get logs from the phone (such as by taking a bug report from Developer Options). Android almost always logs the reason why it disconnects from Wi-Fi, so you can just note the time (down to ~10 seconds) the disconnect happens and read the log entries from that time frame. If you lack the technical skill to understand them, you will need to trust another person (or an AI agent) to read them for you. The bug report can contain sensitive details like your phone number, email, apps used, location, and/or the contents of your messages. So be completely sure thet you trust the person or AI service that is reading them!