How to Set Up Xiaomi Watch S4 or Watch 5 with Mi Fitness App

The Xiaomi Watch S4 and Watch 5 are among the best-value smartwatches in 2025, offering health tracking, GPS, and HyperOS integration. This guide walks you through the full setup from unboxing to your first workout.

Step 1 — Download Mi Fitness

Android: Search ""Mi Fitness"" (by Xiaomi Inc.) on Google Play Store. Do not install the older ""Mi Fit"" — it is discontinued.
iPhone: Install ""Mi Fitness (Xiaomi Wear Lite)"" from the App Store.

Step 2 — Enable Bluetooth and Open Mi Fitness

1. Turn on Bluetooth on your phone.
2. Power on your Xiaomi watch (press and hold the side button).
3. Open Mi Fitness → tap Add device.
4. Select your watch model from the list.
5. The app scans and finds the watch. Tap the device name.
6. Confirm the pairing code displayed on the watch screen.

Step 3 — Grant Required Permissions

Mi Fitness needs these permissions for full functionality:

Permission	Why It's Needed
Location	GPS accuracy for runs
Notifications	Mirror phone alerts to watch
Health Connect	Share data with Google Health
Background activity	Continuous heart rate monitoring
Contacts	Show caller name on watch

Grant all of them for the best experience.

Step 4 — Configure Health Tracking

1. In Mi Fitness → tap your profile photo → Personal info.
2. Enter height, weight, date of birth, and gender (used for calorie calculations).
3. Go to Health monitoring → All-day heart rate → set to Smart or Real-time.
4. Enable Sleep tracking, SpO2 monitoring, and Stress detection.

Step 5 — Connect to Google Fit / Strava

1. In Mi Fitness → Profile → Connected apps.
2. Tap Google Fit or Strava → Connect.
3. Authorise Mi Fitness to read/write health data.
4. All workout and health data from your watch now syncs automatically.

Watch Face & Notifications

Change watch face: Mi Fitness → Device → Watch face store — thousands of free faces.
Notification mirroring: Mi Fitness → Device → Notifications — toggle apps you want mirrored (WhatsApp, Gmail, etc.).
Always-on display: Mi Fitness → Device → Display → Always-on display (uses extra battery).

Pro Tip

If your watch battery drains faster than expected after setup, disable Continuous SpO2 monitoring and switch heart rate to Smart mode (every 10 minutes when idle). This alone can extend battery life by 30–40%.