The sound quality is not good. There is a large delay.

If you find the sound quality is not good or there is a large delay, please try the following.


  • Go to "Settings" on the device > Switch on/off "Mobile Data Communication."
  • Go to "Settings" on the device > Switch on/off "Wi-Fi."


  • Go to "Settings" on the device > "More" > Switch on/off "Mobile Networks."
  • Go to "Settings" on the device > Switch on/off "Wi-Fi."

Note: The sound quality depends on the performances of communication line and device both parties use.


<SkyPhone User Support Holiday Closing>

The SkyPhone User Support will be closed during the following time due to Japanese national holidays as Golden Week.

Holiday Closing Time: From Saturday, April 27, 2019 To Monday, May 6, 2019 (JST)
Unavailable Services: User support services (including our responses to your inquiries)

Please note that you'll be responded on May 7 (JST) or later if you contact us after 1:00 PM on April 26 (JST).

You can continue using SkyPhone as usual while our user support services are unavailable.
Thank you for your understanding and cooperation.

If you need our support, click here to contact us.

SkyPhone User Support

Contact Form

Business hours to reply to your message: Monday to Friday 10:00 AM to 5:00 PM (JST), except for national holidays