If your network is unstable or overloaded, the message "Your network connection seems to be unstable. You may not be able to use some features of this app." will be displayed on your MiiTel Phone.
Even if this message is displayed, you may be able to keep using MiiTel Phone without any issues, but we recommend you do the following.
Conduct a speed test
Conduct a speed test to check the status of your network.
Check if you are using MiiTel with the recommended environment
Go to Notice for using MiiTel and check if your network meets with the recommended environment.