(1) Make sure Bluetooth is enabled in your iOS device. (2) Make sure your SMS2 is within connecting range of your iOS device. (3) Before setting up, reset the device by long pressing the button in the hole for about 10 seconds until green LED blinks 3 times.
(1) Please check the battery level. Make sure the battery level is not lower than 5%. (2) If SMS2 is under BLE5.0 connection, the range is limited to BLE range only. So if BLE connection is poor, please consider setting up a Thread network for SMS2 for better connection. (3) If the connection of SMS2 and the Thread network is too weak, try putting a Thread router to improve the Thread connection.
(1) A red dot on the SMS2 icon in the Onvis Home app means a newer firmware is available. (2) Tap the SMS2 icon to enter main page, and then tap the upper right to enter details. (3) Follow the app prompting to complete firmware update. Do not quit the app during firmware update. Wait about 20 seconds for SMS2 to reboot and reconnect.