Xiaomi Network Settings Reset After HyperOS Update

Xiaomi Network Settings Reset After HyperOS Update (Wi-Fi, Mobile Data, APN & Bluetooth) – UK Fix

This guide helps if your Xiaomi lost Wi-Fi passwords, Bluetooth pairings, APN settings, or mobile network preferences after a HyperOS update. A network settings reset after a HyperOS update can affect your saved connections and mobile data configuration.

Quick Answer:
If your network settings reset after a HyperOS update, first reconnect to your Wi-Fi networks manually. Then check APN settings – go to Settings → SIM cards & mobile networks → [Your carrier] SIM → Access Point Names → Reset to default → Restart. If VoLTE or WiFi Calling is missing, try the relevant codes on supported devices (see Section 3). If your saved Wi-Fi networks or Bluetooth pairings have been removed, you'll need to add them again manually. If you've used the "Reset Wi-Fi, mobile networks and Bluetooth" option in the past, that can also remove saved settings.

Applies to Redmi, POCO and Xiaomi Phones

This guide applies to Xiaomi, Redmi and POCO devices running MIUI or HyperOS on UK networks.

🔍 Quick Diagnostic Table

What you seeWhat it usually means
Wi-Fi passwords and Bluetooth pairings are goneUpdate reset saved profiles
Mobile data not workingAPN settings reset
VoLTE or WiFi Calling missingCarrier check re-enabled
Network unstable after updateSettings partially affected

🔍 Quick Start – Find Your Path

SymptomMost Likely CauseGo To
Wi-Fi and Bluetooth settings lostUpdate reset saved profilesSection 1
Mobile data not workingAPN settings resetSection 2
VoLTE or WiFi Calling missingCarrier check re-enabledSection 3
Network unstable after updateSettings partially affectedSection 4

Section 1 – Wi-Fi and Bluetooth Settings Lost

Some HyperOS updates or update-related issues may result in saved Wi-Fi networks and Bluetooth pairings being removed, although this is uncommon and is not expected behaviour on every device.

What to do:

  1. Reconnect to Wi-Fi networks – Go to Settings → Connection & sharing → Wi-Fi → select your network and enter the password. You'll need to do this for each saved network.
  2. Re-pair Bluetooth devices – Go to Settings → Connection & sharing → Bluetooth → pair your devices again.
  3. Backup for future updates – Back up your important data before major updates. Some backup methods may preserve certain system settings, but saved Wi-Fi networks and network preferences are not always restored.

Section 2 – Mobile Data Not Working (APN Reset)

HyperOS updates can reset APN settings to default, which may remove manually configured APNs or custom settings. This is a common cause of mobile data problems after an update.

Try these in order:

  1. Reset APN to default – Settings → SIM cards & mobile networks → [Your carrier] SIM → Access Point Names → three dots → Reset to default → Restart.
  2. Check your APN is selected – After reset, go back to Access Point Names and ensure the dot is next to your carrier's APN.
  3. If still not working: Manually create a new APN using your carrier's settings – check their website or contact them.

Section 3 – VoLTE or WiFi Calling Missing

On some devices, HyperOS updates can re-enable carrier checks that hide VoLTE and WiFi Calling options. This does not happen on all devices.

Try these in order:

  1. Restore VoLTE – On supported devices, dial *#*#86583#*#* → restart → Settings → SIM cards & mobile networks → [Your carrier] SIM → VoLTE → ON.
  2. Restore WiFi Calling – On supported devices, dial *#*#869434#*#* → restart → Settings → SIM cards & mobile networks → [Your carrier] SIM → WiFi Calling → ON.
  3. Check preferred network type – Settings → SIM cards & mobile networks → [Your carrier] SIM → Preferred network type → Set to 5G/4G/3G auto.

Section 4 – Unstable Network After Update

If your phone connects to networks but is unstable (drops signal, slow data, frequent reconnections), the update may have changed or reset some network-related settings.

Try these in order:

  1. Check preferred network type – Set to 5G/4G/3G auto or 4G/3G/2G auto.
  2. Reset network settings – Settings → Connection & sharing → Reset Wi-Fi, mobile networks, and Bluetooth (removes saved Wi-Fi passwords – you'll need to re-enter them).
  3. Check for another update – Sometimes a follow-up patch fixes issues introduced by the previous update.
  4. Check APN settings – Reset to default if mobile data is affected.

Why Did HyperOS Reset Network Settings?

  • Major system update – Major updates may reset settings to apply significant changes correctly.
  • Carrier configuration update – The update may include new carrier settings that override your manual configurations.
  • System optimisation – Resetting network settings can prevent conflicts after major changes.
  • Update bug or incomplete installation – On some updates, this may be a one-off issue.
  • Manual network reset performed during troubleshooting – If you previously used the "Reset Wi-Fi, mobile networks and Bluetooth" option, your saved network settings will also have been removed.

⚠️ What NOT to Do

  • Don't factory reset your phone – settings reset after an update doesn't require a factory reset.
  • Don't assume your SIM is faulty – test it in another phone first.
  • Don't skip re-entering Wi-Fi passwords – you'll need to do this manually.
  • Don't repeatedly reset network settings – unless troubleshooting requires it, you'll need to reconnect all Wi-Fi networks each time.

Quick Questions

Why did my Wi-Fi passwords disappear after HyperOS update?
Some HyperOS updates or update-related issues may result in saved Wi-Fi networks and Bluetooth pairings being removed. You'll need to re-add them manually.

How do I restore mobile data after a HyperOS update?
Reset APN to default (Section 2) – this is the most common fix for mobile data issues after an update.

Why is VoLTE missing after HyperOS update?
On some devices, the update re-enabled carrier checks. On supported devices, dial *#*#86583#*#* and restart to restore it.

Will resetting network settings delete my photos?
No. It removes saved Wi-Fi networks, Bluetooth pairings and some mobile network settings, but your photos, apps and personal files are not affected.

How do I backup network settings before updating?
Back up your important data before major updates. Some backup methods may preserve certain system settings, but saved Wi-Fi networks and network preferences are not always restored.

Should I worry if settings reset after an update?
Not usually. It can happen and is often a one-time issue. Re-enter your passwords and reconfigure settings as needed.

Can a HyperOS update remove saved Wi-Fi passwords?
This is uncommon, but it has been reported after some major updates or when network settings were reset during troubleshooting. If this happens, you'll need to reconnect to each network manually.

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