Technician helping troubleshoot a Xiaomi phone Wi-Fi disconnection issue

Steve H.

Reviewed for technical accuracy

Specialities: Xiaomi Wi-Fi dropping and reconnection problems, Android network settings, Wi-Fi band switching (2.4GHz vs 5GHz), Xiaomi MIUI system cache issues

Xiaomi Wi-Fi keeps disconnecting, drops signal, reconnects repeatedly — safe network checks and MIUI settings before factory reset

Technician avatar Technician
I understand how frustrating it is when your Xiaomi phone keeps dropping Wi-Fi. One moment you’re browsing, the next it disconnects and you have to reconnect manually.

Trust moment: let’s not jump straight to a factory reset. Most Wi-Fi disconnection issues on Xiaomi phones come down to a few safe settings we can check first, and you can undo any changes if needed.

Quick start: are you seeing “Wi-Fi disconnected” notifications, or does the phone just lose internet without warning? And does it happen on all Wi-Fi networks or just your home one?
Customer
It’s mainly at home. The phone shows the Wi-Fi icon, but then the internet stops working. Sometimes it reconnects on its own after a few seconds, sometimes I have to turn Wi-Fi off and back on.
Technician avatar Technician
That’s a clear pattern. The phone is staying connected to the Wi-Fi name, but losing the actual internet signal. That usually means one of three things: the router is dropping the connection, the phone’s Wi-Fi settings need adjusting, or there’s a conflict with how the phone handles band switching (2.4GHz vs 5GHz).

Before we change anything: when this happens, do you notice if other devices in your home (like a laptop or tablet) lose internet at the same time, or just the Xiaomi?
Customer
Other devices seem fine. It’s just the phone. My laptop stays connected the whole time.
Technician avatar Technician
Good — that tells us the router and internet are stable. The issue is specific to how your Xiaomi phone is managing the Wi-Fi connection.

Trust moment: I don’t want you resetting the phone or clearing data without knowing why. Let’s walk through the most common Xiaomi settings that cause this, and they’re all reversible.

First safe check: go to Settings → Wi-Fi → tap your home network name → Advanced. Do you see an option for “IP settings” or “Proxy”, and is anything set to “Manual” or showing an unusual IP address?
Customer
I see “IP settings” and it says “DHCP.” I don’t think I changed it. Proxy is set to “None.” Those sound normal?
Technician avatar Technician
Perfect — those are the safe defaults. DHCP means the router assigns the IP automatically, and “None” proxy is correct for home Wi-Fi. So that’s not the culprit.

Next check (this one is important for Xiaomi): go to Settings → Wi-Fi → Wi-Fi settings (or the gear icon) → look for “Wi-Fi optimization” or “Auto-connect to open networks.” Is either of those turned on?
Customer
I found “Auto-connect to open networks” and it’s turned on. I’m not sure what that does.
Technician avatar Technician
That could be part of it. That setting makes the phone automatically jump to any open Wi-Fi network it sees, even if it’s weaker than your home network. On some Xiaomi phones, this causes the phone to briefly “test” other networks in the background, which interrupts your home connection.

Safe action: turn that off and see if disconnections improve over the next day or two. It’s a one-tap change and you can turn it back on anytime.

While you’re in Wi-Fi settings, also check: is there a “Wi-Fi sleep policy” or “Sleep mode” option? Some Xiaomi phones have a setting that puts Wi-Fi to sleep when the screen is off.
Customer
Found it. It says “Wi-Fi sleep policy” and it’s set to “Sleep in 15 minutes.” Is that the problem?
Technician avatar Technician
That’s a likely culprit. “Sleep in 15 minutes” means the phone turns off Wi-Fi when the screen is off for 15 minutes — which saves battery but can feel like a disconnect when you unlock the phone later.

Trust moment: I don’t want you thinking your phone is broken. This is a power-saving feature that sometimes doesn’t play well with apps that expect a constant Wi-Fi connection (like email, messaging, or streaming).

Safe fix: change that to “Never sleep” or “Never,” and your disconnections should stop. The battery impact is usually tiny on modern Xiaomi phones, especially if you’re mostly on Wi-Fi at home.
Customer
I changed it to “Never.” Are there any other settings I should check before I wait to see if it works?
Technician avatar Technician
Yes, one more safe check: go to Settings → About phone → scroll down and look for “MIUI version.” Does it show something like “MIUI 13” or “MIUI 14,” and do you see an update available?

Sometimes older MIUI versions have Wi-Fi bugs that are fixed in updates. An update won’t hurt, and it’s often the simplest fix.
Customer
It shows MIUI 13. I haven’t checked for updates in a while. Should I do that now?
Technician avatar Technician
I’d recommend it. Go to Settings → About phone → System update and tap “Check for updates.” If there’s a newer MIUI version available, download and install it on Wi-Fi (so the update doesn’t use mobile data).

Updates usually fix Wi-Fi stability issues, and they’re safe — your photos, messages, and apps stay intact.

So to recap the changes you’ve made: turned off “Auto-connect to open networks,” changed “Wi-Fi sleep policy” to “Never,” and you’re about to check for a system update. These are the three most common causes of Xiaomi Wi-Fi disconnections.
Customer
That makes sense. I feel better knowing what was causing it. I’ll make those changes and wait a few days to see if the disconnections stop.

Quick answer: the accepted fix

Accepted first fix for Xiaomi phone keeps dropping Wi-Fi (safe approach): 1) turn off “Auto-connect to open networks” in Wi-Fi settings (stops the phone from jumping between networks), 2) change “Wi-Fi sleep policy” from a time limit to “Never” (prevents Wi-Fi from turning off when the screen is off), 3) check System update and install any available MIUI updates (fixes known Wi-Fi stability bugs), and 4) if disconnections continue after these changes, try “Forget” and re-add your home Wi-Fi network (clears any corrupted connection profile). All of these steps are reversible and do not require a factory reset.

Why Xiaomi phones drop Wi-Fi (and why it often looks like a network problem)

When a Xiaomi phone keeps disconnecting from Wi-Fi, it usually isn’t the router’s fault — other devices stay connected just fine. The issue is almost always one of three things: the phone’s power-saving settings are too aggressive (Wi-Fi sleep mode), the phone is trying to be “too smart” and switching between networks automatically, or the MIUI system software has a known Wi-Fi bug that a newer update fixes. Xiaomi’s MIUI interface includes several Wi-Fi management features that are designed to save battery, but sometimes they’re too aggressive for everyday use. The good news is that all of these are settings you can adjust without any technical knowledge, and none of them require resetting your phone.

What to check first (safe checks before changing anything advanced)

Start by confirming that other devices in your home (a laptop, tablet, or another phone) stay connected to the same Wi-Fi network without dropping. If they do, the problem is specific to your Xiaomi phone’s settings, not your router. Next, open Settings → Wi-Fi and look for any enabled power-saving or optimization features. Most Xiaomi phones have a “Wi-Fi sleep policy” that turns off Wi-Fi when the screen is off — this is often the culprit. Check your current MIUI version and see if an update is available, because Wi-Fi bugs are frequently patched in system updates. For more troubleshooting help, see Troubleshooting Guides and Mobile Troubleshooting.

Xiaomi Wi-Fi disconnection — calm, senior-friendly guidance

Most fixes are just one or two settings changes, no factory reset needed.

If your Xiaomi phone Wi-Fi keeps disconnecting, don’t assume the phone is broken or that you need to erase it. The most common causes are power-saving features that are too aggressive, automatic network-switching settings, or an outdated MIUI version. All of these are easy to adjust, and you can change them back anytime if you want to. Start by turning off “Auto-connect to open networks” and setting “Wi-Fi sleep policy” to “Never.” Then check for a system update. In most cases, one or two of these changes will solve the problem within a day or two.

Disclaimer: This information is AI-generated and intended for general guidance only. If your Xiaomi phone has physical damage or persistent hardware issues, consult an authorized service center. For model-specific settings, refer to official Xiaomi or MIUI documentation.

If the issue continues

Getting Started Is Easy

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If your Xiaomi phone Wi-Fi keeps dropping, start with the safest checks: disable auto-connect, adjust sleep policy, and check for updates. No factory reset required.

Expert will respond in minutes

Most Xiaomi Wi-Fi disconnections come down to power-saving settings, network auto-switching, or outdated MIUI software — all reversible changes.

Stop Wi-Fi drop cycles

Once you adjust the Wi-Fi sleep policy and disable aggressive auto-connect features, your Xiaomi phone will maintain a stable connection at home without constant reconnects.

FAQ

What does “Wi-Fi sleep policy” mean on my Xiaomi phone?

It’s a power-saving feature that turns off Wi-Fi when your screen is off for a set amount of time (often 15 minutes). This saves battery, but it can cause your phone to disconnect from the internet when you’re not actively using it. If you change it to “Never,” the Wi-Fi stays on all the time, and your phone won’t drop the connection.

Why does my Xiaomi phone drop Wi-Fi but my laptop doesn’t?

Xiaomi phones have more aggressive power-saving settings than most laptops, and MIUI (Xiaomi’s Android version) includes features like Wi-Fi sleep and auto-connect that can cause disconnections. Your laptop likely doesn’t have the same settings, so it stays connected. The issue is specific to how your Xiaomi phone manages Wi-Fi, not your router.

Will turning off Wi-Fi sleep policy drain my battery?

Probably not noticeably. Modern Xiaomi phones use very little power when the Wi-Fi is on but idle (the screen is off). Most of your battery drain comes from the screen, apps, and the cellular radio. If you’re mainly using Wi-Fi at home, the battery impact is minimal, and you’ll gain a more stable connection.

Should I do a factory reset if these settings don’t fix the disconnections?

Not immediately. Before a factory reset, try a few more safe steps: forget your Wi-Fi network and re-add it, restart your phone, and check your router settings (make sure it’s not dropping connections to other devices). If disconnections persist after a MIUI update and these adjustments, then a factory reset is a reasonable next step — but it’s not the first fix.

Sources

Filed under: Internet, Wi-Fi & Mobile Data

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