Xiaomi Cannot Receive Calls on Three UK Network

Xiaomi Cannot Receive Calls on Three UK Network – UK Fix

This guide helps if your Xiaomi on Three UK can make outgoing calls and send texts but cannot receive incoming calls, or calls go straight to voicemail without ringing. If you've searched for "Xiaomi incoming calls not working", "Redmi not receiving calls", "POCO calls go straight to voicemail", or "Three incoming calls not ringing", this guide covers the most common fixes.

Quick Answer:
If your Xiaomi cannot receive calls on Three UK, first check Do Not Disturb is OFF. Then check Call Forwarding – Phone app → three dots → Settings → Calling accounts → Three → Call forwarding → ensure "Always forward" is OFF. Also check VoLTE is enabled: Settings → SIM cards & mobile networks → Three SIM → VoLTE → ON. If the problem only happens at home, enable WiFi Calling.

Applies to Redmi, POCO and Xiaomi Phones

This guide applies to Xiaomi, Redmi and POCO devices running MIUI or HyperOS on the Three UK network, including MVNOs like SMARTY and iD Mobile.

🔍 Quick Check – Can You Make Calls?

Use this table to quickly identify your issue:

SituationUsually Means
Outgoing calls work but incoming don'tCall forwarding / DND / VoLTE
Incoming work but outgoing don'tRegistration issue
Texts work but calls don'tVoLTE / IMS
Nothing worksNetwork issue

🔍 Quick Start – Find Your Path

SymptomMost Likely CauseGo To
All calls go straight to voicemailDo Not Disturb or Call ForwardingSection 1
Calls from unknown numbers go to voicemailBlock unknown callers settingSection 2
Calls fail only in certain locationsCoverage issueSection 3
Calls fail after a HyperOS updateSettings resetSection 4
Some calls ring, others don'tSpam filter or blocked numberSection 5

Section 1 – All Calls Go Straight to Voicemail

If every call goes to voicemail without your phone ringing, the issue is almost always Do Not Disturb or Call Forwarding.

Try these in order:

  1. Check Do Not Disturb – Swipe down the notification shade. If the DND icon is highlighted, tap it to turn OFF. Also check Settings → Sound & vibration → Do Not Disturb → ensure no schedules are active.
  2. Check Call Forwarding – Phone app → three dots (⋮) → Settings → Calling accounts → Three → Call forwarding → ensure "Always forward" is OFF. Also check "When busy", "When unanswered", and "When unreachable" – they should either be OFF or set to voicemail.
  3. Check Blocked numbers – Phone app → three dots (⋮) → Settings → Blocked numbers → ensure the setting "Block calls from unknown numbers" is OFF.
  4. Check VoLTE is ON – Settings → SIM cards & mobile networks → Three SIM → VoLTE → ON.
  5. Enable WiFi Calling – Settings → SIM cards & mobile networks → Three SIM → WiFi Calling → ON. This routes calls over WiFi when signal is weak.
  6. Check IMS Registration – If your device supports the Phone Information menu, dial *#*#4636#*#* → Phone information → look for "IMS registered". If false, the phone isn't registered for voice services. This menu is not available on all devices and may be disabled by the manufacturer or carrier.
  7. Restart your phone – A full reboot can resolve temporary glitches.
  8. Test your Three SIM in another phone – If incoming calls still fail on another phone, contact Three.

Section 2 – Calls from Unknown Numbers Go to Voicemail

If you receive calls from contacts but unknown numbers go to voicemail, the issue is likely the "Block calls from unknown numbers" setting.

Try these in order:

  1. Check Blocked numbers – Phone app → three dots (⋮) → Settings → Blocked numbers → turn OFF "Block calls from unknown numbers".
  2. Check Google Dialer settings – If you're using Google Phone app, open Settings → Caller ID & spam → turn OFF "Filter spam calls" (this may send suspected spam to voicemail).
  3. Check if the number is blocked manually – Go to Blocked numbers list and ensure the specific number isn't blocked.

Section 3 – Calls Fail Only in Certain Locations (Coverage Issues)

If calls go to voicemail only at home, work, or in specific areas, the issue is likely coverage. Weak coverage may also affect VoLTE calls.

Try these in order:

  1. Check Three coverage – Visit Three's website and enter your postcode. If coverage is weak, incoming calls may fail and go to voicemail.
  2. Enable WiFi Calling – Settings → SIM cards & mobile networks → Three SIM → WiFi Calling → ON. This routes calls over WiFi when signal is weak.
  3. Switch to 4G only – Settings → SIM cards & mobile networks → Three SIM → Preferred network type → select 4G/3G/2G auto. 5G can be weaker indoors.
  4. Check if 3G is available – Three is phasing out 3G. Without VoLTE, calls may fail to reach you.

Section 4 – Calls Fail After a HyperOS Update

If calls started going to voicemail immediately after a system update, the update may have reset settings.

Try these in order:

  1. Check Do Not Disturb – Updates can sometimes turn DND on.
  2. Check Call Forwarding – Updates can reset forwarding settings.
  3. Check VoLTE – Settings → SIM cards & mobile networks → Three SIM → VoLTE → ON.
  4. Re-check WiFi Calling – Ensure WiFi Calling is still enabled after the update.
  5. Reset network settings – Settings → Connection & sharing → Reset Wi-Fi, mobile networks, and Bluetooth (last resort).

Section 5 – Some Calls Ring, Others Don't (Spam or Blocked Number)

If some calls come through and others don't, the issue may be spam filtering or a blocked number.

Try these in order:

  1. Check spam filter – Google Phone app → Settings → Caller ID & spam → turn OFF "Filter spam calls".
  2. Check blocked numbers – Phone app → Settings → Blocked numbers → ensure the number isn't blocked.
  3. Check Three's network spam filter – Three may block some calls at the network level. Contact Three to check.

Dual SIM Considerations

If you're using two SIMs, try these steps:

  • Disable the second SIM temporarily – Settings → SIM cards & mobile networks → Turn off the second SIM.
  • Set Three as the default calling SIM – Settings → SIM cards & mobile networks → Default for calls → Select Three.
  • Restart your phone – After making changes, restart to apply them.

eSIM Considerations

If you're using an eSIM on Three:

  • Check if the eSIM profile has expired – Some eSIMs have a limited validity period.
  • Contact Three – Ask them to refresh the eSIM profile or send a new QR code.
  • Delete and re-download the carrier profile – Only if Three recommends this.

Three UK 3G Switch Off

Three has retired most of its 3G network. As Three has retired most of its 3G network, phones that rely on 3G for voice calls may no longer receive incoming calls unless VoLTE is enabled. This means:

  • Older phones or phones with VoLTE disabled – May fail to receive incoming calls.
  • Ensure VoLTE is enabled – Settings → SIM cards & mobile networks → Three SIM → VoLTE → ON.
  • If VoLTE is missing – Contact Three to check your account provisioning.

Why Can't My Xiaomi Receive Calls on Three?

  • Do Not Disturb (most common) – DND sends all calls to voicemail silently.
  • Call Forwarding – "Always forward" sends all calls to voicemail.
  • Weak signal or no coverage – If your phone can't be reached, calls go to voicemail.
  • VoLTE disabled – Without VoLTE, calls may fail to connect.
  • Block unknown callers – Calls from numbers not in your contacts may be blocked.
  • IMS registration failed – The phone isn't registered for voice services.
  • Account or network issue – Three may have a temporary issue.

⚠️ What NOT to Do

  • Don't factory reset your phone – This is rarely needed for call issues.
  • Don't assume your phone is broken – Test your SIM in another phone first.
  • Don't ignore Do Not Disturb – It's the #1 cause and easy to miss.

Quick Questions

Why do all my Three calls go straight to voicemail on Xiaomi?
Most commonly Do Not Disturb is ON, or Call Forwarding is set to "Always forward". Check both settings.

How do I stop unknown calls going to voicemail?
Phone app → three dots → Settings → Blocked numbers → turn OFF "Block calls from unknown numbers". Also check Google Dialer spam filter.

Does Three have coverage issues in my area?
Check Three's coverage map or call 333. If coverage is weak, incoming calls may fail.

Why did calls start going to voicemail after HyperOS update?
Updates can reset DND, Call Forwarding, or VoLTE settings. Check all settings in Section 4.

Will resetting network settings fix voicemail issues?
It can, but only if the issue is settings-related. Try other fixes first – resetting removes saved Wi-Fi passwords.

Why can I make calls but not receive them?
This usually indicates an issue with Do Not Disturb, Call Forwarding, or VoLTE. Check all three settings in Section 1.

Can VoLTE affect incoming calls?
Yes. Without VoLTE, incoming calls may fail to reach your phone, especially as Three retires its 3G network. Ensure VoLTE is enabled in your SIM settings.

Why do calls go straight to voicemail without ringing?
This is usually Do Not Disturb (DND), Call Forwarding, or VoLTE being disabled. Start with Section 1 to check all three.

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