A: Please check as below:
① The phone is connected to the 2.4GHz Wi-Fi.
② Press the power button of the thermometer quickly for 3 times, then the Wi-Fi icon of the device will blink rapidly.
③ Please put the IBBQ-4T close to the Wi-Fi router and phone.
④ Pair it on the Inkbird pro app, please make sure the Wi-Fi password is correct.
⑤ The Wi-Fi router encryption method was WPA/ WPA2-PSK.
⑥ The battery of IBBQ-4T was fully charged.
⑦ If still cannot work, please reboot the Wi-Fi router and test with another phone.
Here is a video for reference: