Wrist-worn smart timepieces

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Smartwatches - Extend battery life

Wrist-worn smart timepieces

Before trying to pair your smartwatch again by following the tutorial steps, check the following:

Are you using the correct One App? You can confirm this on your Smartwatch’s original box.
Is your One App updated? And your phone’s software? — Both systems should be updated to their latest versions to ensure proper pairing.
If you first turned on Bluetooth on your phone and paired through that method, you need to disconnect this connection by clicking the "unpair" option. You can confirm if your Smartwatch is connected this way if it appears in the "Paired Devices" list (image on the right).
Restart your One Smartwatch.
Restart your phone.
Uninstall the One App and reinstall it.
Enable location on your phone (image on the left).
Make sure you are pairing through the One App. You can confirm you are connecting to the correct device by verifying the MAC Address (See the previous FAQ point if you have doubts).
Follow the tutorial steps again.

The MAC Address is a unique code that identifies your device. It is with this that the app One can recognize your smartwatch and pair it correctly.

To find this code on your device, follow these steps:

Open the Definitions of the smartwatch.
Look for the option Information.
Look for something like Version — there you will see the code you need.

A App ONE SMART is compatible with the following generations of mobile phones:

Android 4.4 or later, the current version of the Android operating system is 14

A App ONE TIME PRO is compatible with the following generations of mobile phones:

Android 5.0 or later, the current version of the Android operating system is 14
Apple iOS 10.0 or later, the current version of the iOS operating system is 18.1

A App ONE TECH PRO is compatible with the following generations of mobile phones:

Android 5.0 or later, the current version of the Android operating system is 14
Apple iOS 12.0 or later, the current version of the iOS operating system is 18.1

A App LEFUN HEALTH is compatible with the following generations of mobile phones:

Android 6.0 or later, the current version of the Android operating system is 13
Apple iOS 13.0 or later, the current version of the iOS operating system is 16.5.1 This means that phones from the last 8 years are compatible with the LEFUN HEALTH APP.

This means that phones from the last 10 years are compatible with the ONE APP. On iOS, the App "communicates" with the phone's Health App and the health data stays in that application.

After pairing with the app, the smartwatch automatically reconnects when it is within range. When you open the app, it automatically detects the smartwatch.

Bluetooth may disconnect on its own because the maximum range between the smartwatch and the phone is 8 meters in a straight line, without obstacles. The connection can be affected by:

Walls, doors, or other physical obstacles;
Interference from other electronic devices that use Bluetooth or Wi-Fi.

💡 Important: the functionality of Location for the One app must be enabled.

The latest generations of One Smartwatches allow you to make and receive calls directly from the device. Below we clarify some of the most frequently asked questions about this feature:
Does the contact name not appear when you receive a call? Please check the following:

Is your device properly paired in the One App? (image on the right)
Have you enabled call permissions in the App settings? (image on the left)
Are your contacts stored on the SIM card? If so, and the smartwatch does not have access to this specific storage, it may prevent reading the contacts. If contacts are stored on the SIM card and not available in the phone’s memory, the smartwatch may not be able to read this information, especially if it can only read contacts from the phone’s memory or the synced Google account.

Is the number of frequent contacts limited? Yes! Each One App has a limit on the number of frequent contacts you can add. To do this, open the App, select "Frequent Contacts," and on the page select "+" to add to the list. Synchronization is automatic, and the contacts you choose will appear on the smartwatch under "Frequent Contacts."

Whenever you want to change the list, you must edit it directly in the App by following the steps above.