The data usage of SkyPhone calls is as follows.
Voice Calls:
About 0.6MB with standard quality sound (set by default) and about 1.2 MB with high quality sound
Video Calls:
About 8.6 MB with standard quality sound
Note: As for video calling, we recommend that you use Wi-Fi.
<SkyPhone User Support Availability During the September Holidays>
Please be informed that SkyPhone User Support will be closed during the following period due to Japanese national holidays.
Support Closure: September 19 (Sat.) – September 23 (Wed.), 2026
Unavailable Services: Responses to support inquiries and related support services
Inquiries received after 1:00 PM (JST) on September 18 will be answered sequentially from September 24.
We apologize for any inconvenience this may cause and appreciate your understanding.
Please note that while our user support services will be closed during this period, SkyPhone will remain available as usual.
If you need our support, click here to contact us.
Business hours to reply to your message: Monday to Friday 10:00 AM to 5:00 PM (JST), except for national holidays