Xiaomi Internet Stops Working After Midnight

Xiaomi Internet Stops Working After Midnight – UK Fix

If your Xiaomi, Redmi, or POCO device loses internet connection at night—whether it's WiFi dropping, mobile data disconnecting, or both—this guide explains the most common causes and how to fix them.

Quick Answer:
If your internet stops working after midnight, first check whether other devices on the same network are also affected. Then, if available on your device, go to Settings → Wi-Fi → Additional settings (if available) → set "Keep Wi-Fi on during sleep" to Always. If that doesn't help, check Settings → Battery → Additional features → turn OFF "Clear cache when device is locked" (if available). Also check your router for scheduled reboots—some routers are configured to restart automatically overnight.

🔍 Quick Diagnostic Table

What happensWhat it usually meansGo To
WiFi disconnects at night, reconnects when you wake the phonePower saving or sleep mode cutting WiFiSection 1
Only WiFi drops, mobile data worksRouter or WLAN+ issueSection 2
Internet stops at the same time every nightRouter scheduled reboot or carrier maintenanceSection 3
All devices lose connection on the same networkRouter or broadband issueSection 2
Phone shows signal but no internetAPN or carrier issueSection 4

Section 1 – WiFi Disconnects at Night (Most Common)

If your WiFi drops at night but reconnects when you wake the phone, the issue is almost always power-saving settings. HyperOS power-saving features may suspend Wi-Fi activity during sleep on some devices.

Try these in order:

  1. Check other devices – If other devices on the same network also lose connection, skip to Section 2 (router issue).
  2. Keep Wi-Fi on during sleep (if available) – Settings → Wi-Fi → Additional settings (if available) → set "Keep Wi-Fi on during sleep" to Always.
  3. Turn off WLAN+ (if available) – Settings → Wi-Fi → Additional settings (if available) → disable WLAN+. This feature automatically switches between WiFi and mobile data based on signal quality and can cause drops.
  4. Disable "Clear cache when device is locked" (if available) – Settings → Battery → Additional features → turn OFF "Clear cache when device is locked" or "Lock screen cleanup".
  5. Check Sleeping mode (if available) – Settings → Battery → Additional features → Sleep mode → turn OFF. This feature disconnects networks during scheduled sleep hours.
  6. Forget and reconnect to WiFi – Settings → Wi-Fi → long-press your network → Forget → reconnect fresh.

Section 2 – Only WiFi Drops (Router or WLAN+ Issue)

If only WiFi disconnects and mobile data works fine, or if other devices also disconnect, the issue is likely router-related or WLAN+.

Try these in order:

  1. Disable WLAN+ (if available) – Settings → Wi-Fi → Additional settings (if available) → turn OFF WLAN+.
  2. Check your router's scheduled reboot – Some routers are configured to restart automatically overnight. Log into your router's admin panel and check for scheduled reboot settings.
  3. Change WiFi band – If your router supports both 2.4GHz and 5GHz, try connecting to the other band. 5GHz offers faster speeds but shorter range; 2.4GHz is more stable over distance.
  4. Update router firmware – Log into your router's admin panel and check for firmware updates.

Section 3 – Same Time Every Night (Router or Carrier Maintenance)

If internet stops at exactly the same time every night (e.g., midnight, 2am), the issue is likely external—either your router or your carrier.

Try these in order:

  1. Check router scheduled reboot – Some routers have a scheduled reboot feature that runs at night. Check your router's admin panel.
  2. Check your carrier's maintenance schedule – Some UK carriers perform overnight network maintenance. Contact your carrier to ask if there are known overnight issues in your area.
  3. Check your data allowance reset time – If your billing cycle resets at midnight, your connection may briefly drop while the system refreshes your allowance.
  4. If your router becomes unstable after running for long periods – Scheduling a reboot during off-peak hours may help.

Section 4 – Signal Shows But No Internet (APN or Carrier Issue)

If your phone shows signal bars but no internet at night, the issue may be carrier-side. Check whether other devices on the same network are also affected.

Try these in order:

  1. Toggle Airplane mode – ON for 30 seconds, then OFF. This forces the phone to reconnect to the network.
  2. Check your data allowance – If you've exceeded your limit, data may be blocked until the next billing cycle.
  3. Reset APN to default – Settings → SIM cards & mobile networks → [Your carrier] → Access Point Names → three dots → Reset to default.

Why Does Internet Stop After Midnight?

  • Power saving or sleep mode (most common) – HyperOS power-saving features may suspend Wi-Fi activity during sleep on some devices.
  • Router scheduled reboot – Some routers are configured to restart automatically overnight.
  • Carrier maintenance – UK carriers occasionally perform overnight network maintenance.
  • Data allowance reset – Your billing cycle may reset at midnight, causing a brief disconnection.
  • WLAN+ or smart network switching – These features can cause brief disconnections.
  • Some HyperOS updates may reset or change power-saving settings – Check your settings after major updates.

⚠️ What NOT to Do

  • Don't factory reset your phone – This is rarely needed for night-time internet issues.
  • Don't blame your phone immediately – Test if other devices are also affected before troubleshooting your phone.
  • Don't ignore your router – Router scheduled reboots are a very common cause.
  • Don't repeatedly toggle Airplane mode – If the problem affects every device on the same Wi-Fi network, the issue is likely your router or broadband connection.

Quick Questions

Why does my WiFi disconnect at night on Xiaomi?
Most commonly, power-saving settings cut WiFi during sleep. If available, set "Keep Wi-Fi on during sleep" to Always in Wi-Fi Additional settings.

Why does Wi-Fi reconnect as soon as I unlock my phone?
This is typically caused by power-saving features that suspend Wi-Fi during sleep. Check "Clear cache when device is locked" (if available) and turn it off.

Why does my internet stop at exactly midnight every night?
This is likely your router's scheduled reboot or your carrier's network maintenance. Check your router settings and contact your carrier.

Does Battery Saver affect internet at night?
Yes. Battery Saver can aggressively cut network activity. Turn it off if you need stable overnight internet.

Can a HyperOS update cause night-time disconnections?
Yes. Some HyperOS updates may reset or change power-saving settings. Check your settings after major updates.

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