How to turn on VoLTE and 5G on a Xiaomi phone (HyperOS 3)

Device

Android

Shown on

Xiaomi Redmi Note 15 Pro 5G (25080RABDG), HyperOS 3.0.308.0, Android 16

App

Settings

Path

Settings › Mobile networks › SIM

Real screenshots

4 of 4 steps

Checked

October 2026

Sources

1 official, linked below

Step by step

1. 

   Open Mobile networks

   Go to Settings, Mobile networks. Tap the SIM at the top.

   Done

2. 

   Turn on Use VoLTE

   Turn on Use VoLTE: Use VoLTE to improve the quality of voice calls. It was off on ours.

   Done

3. 

   Tap Preferred network type

   On the same page, tap Preferred network type.

   Done

4. 

   Choose Prefer 5G

   Choose Prefer 5G. Ours offered Prefer 5G, Prefer LTE, Prefer 3G and 2G only; Prefer 5G was selected.

   Done

If you do not see this option

• No Use VoLTE switch? Xiaomi's Xiaomi 15 page says to dial *#*#86583#*#* in the Phone app first, then turn on Use VoLTE. We did not try the code. Source: Does the Xiaomi 15 support VoLTE?

If this does not work

• No 5G icon? Ours showed no 5G icon while on Wi-Fi. 5G also needs coverage and a plan that includes it.
• VoLTE turns itself off? It needs your carrier's support. Source: Does the Xiaomi 15 support VoLTE?

About this guide

VoLTE carries calls over 4G. Its switch says it improves the quality of voice calls. It was off on our SIM.

The screenshots are from our Redmi Note 15 Pro 5G with Xiaomi HyperOS 3.0.308.0 and Android 16, in Light mode. We only opened these screens and changed nothing. Our carrier is blurred.

Good to know

Mobile data problems: Xiaomi mobile data not working.

In short: Settings, Mobile networks, SIM, Use VoLTE on, Preferred network type, Prefer 5G.