Skip to content
TechBone
Xiaomi

Xiaomi: Set Up Fixed Dialing Numbers (FDN)

If your Xiaomi phone suddenly refuses to dial certain numbers, Fixed Dialing Numbers might be limiting outgoing calls and texts to a preset list. This SIM-level restriction blocks any number that is not on the approved list, even a local number with the right area code. Turning the feature on or off always requires PIN 2, not the regular SIM PIN, which trips up most people who try it for the first time.

6 min8 steps
VersionAndroid 11 · MIUI

Step by step

1 / 8

Step 1 of 8: Tap on **Phone**

1

Tap on Phone

Live simulator

Android 11 · MIUI
Set Up Fixed Dialing Numbers (FDN) – MIUI: step 1 – Tap on Phone
Tap on Phone
1 / 8

Scroll or use the buttons for the next step

Feedback

Was the guide correct?

Help others: confirm the path or report a problem.

10

Confirmations

Forum verified this path

Xiaomi

Set Up Fixed Dialing Numbers (FDN) auf Xiaomi

Fixed Dialing Numbers (FDN) is a SIM card feature, not a phone setting. When it is active, only the numbers stored on the FDN list can be called or texted from that SIM slot. Every other number gets rejected instantly, which looks like a network problem but actually comes from this restriction.

Because FDN lives on the SIM, enabling or editing it always asks for PIN 2. This is a separate code from your everyday SIM PIN, usually supplied by your carrier. Enter it wrong too many times and the SIM can lock, so keep the correct PIN 2 ready before you start.

To reach the setting: Tap on Phone ➔ Open the Menu ➔ Tap on Settings ➔ Tap on Calling accounts ➔ Tap on Advanced settings ➔ Tap on Fixed Dialing Numbers ➔ Choose a SIM card (Dual SIM) ➔ Turn On/Off Fixed Dialing Numbers and set the FDN list.

Use FDN when you need to limit a device to a fixed set of contacts, for example a child's phone or a company line. For everyday use without restrictions, leave it turned off.

Frequently asked questions

Without the correct PIN 2 you cannot enable, disable, or edit the FDN list. Contact your carrier to retrieve it, since entering the wrong code repeatedly can lock the SIM.

Compatible devices

Tap your device — opens its hub with matching guides.

Android 11 · MIUI

Xiaomi A1Xiaomi Black Shark 2 ProXiaomi Mi 10 5GXiaomi Mi 10 LiteXiaomi Mi 10 Pro 5GXiaomi Mi 5Xiaomi Mi 8Xiaomi Mi 8 ProXiaomi Mi 9Xiaomi Mi 9 LiteXiaomi Mi 9 ProXiaomi Mi 9 Pro 5GXiaomi Mi 9 SEXiaomi Mi 9TXiaomi Mi 9T ProXiaomi Mi Max 2Xiaomi Mi MIX 3Xiaomi Mi Note 10Xiaomi Mi Note 10 LiteXiaomi Mi Note 10 ProXiaomi Mi Note 2Xiaomi Mi Pad 3Xiaomi Mi PlayXiaomi Mi5s PlusXiaomi Poco F2 ProXiaomi Redmi 1SXiaomi Redmi 3SXiaomi Redmi 4 PrimeXiaomi Redmi 4 ProXiaomi Redmi 4aXiaomi Redmi 4XXiaomi Redmi 5AXiaomi Redmi 6AXiaomi Redmi 8Xiaomi Redmi 8AXiaomi Redmi 9Xiaomi Redmi 9AXiaomi Redmi K20 Pro PremiumXiaomi Redmi K30Xiaomi Redmi K30 ProXiaomi Redmi K30 Pro ZoomXiaomi Redmi Note 8Xiaomi Redmi Note 8 ProXiaomi Redmi Note 8TXiaomi Redmi Note 9Xiaomi Redmi Note 9 ProXiaomi Redmi Note 9 Pro MaxXiaomi Redmi Note 9SXiaomi Redmi Y3

More guides for Xiaomi

Calls & Messages

Dark or Light Theme for Messages App

Open guide
Calls & Messages

Add or Remove Emergency Contacts

Open guide
Calls & Messages

Filter Call History

Open guide
Calls & Messages

Import Contacts from VCF, SIM or Account

Open guide