[Regarding the impact of the AT&T line maintenance]
In order to make a voice call, it is necessary to turn on VoLTE.
/ iPhone: Settings > Cellular > Cellular Plan > Voice & Data > Turn on VoLTE.
/ -Android: Settings>SIM card & mobile data>Tap the line in use>Turn on VoLTE call. /
 
 
[USA America Mainland & Hawaii]
USA Continental & Hawaii 30 days 8GB prepaid sim card
It is an MNO data communication prepaid card of Hong Kong telecommunications company Hutchison (same position as Japan's three major carriers). Wide range and stable high-speed communication using AT&T's communication network.
When 4G data traffic is used up, it will be slowed down to 128kbps.

[with free call]




After arriving at the site, if you replace the SIM, the phone number will be notified by SMS. (You can't know the phone number first)
The phone number is the Hong Kong phone number. Please add +852 when calling.
Voice call: 3000 minutes (incoming & outgoing in the US + outgoing to Hong Kong); 100 minutes (China, Japan, South Korea, Taiwan, Australia, Vietnam, Indonesia)

[Easy setting! ]
Easy to set up: just turn on mobile data and data roaming. Some terminals require APN settings.

[Corresponding band]
[ 4G ]: Band2, 4, 5, 12, 17, 30, 66 (main band is B12 or 17)
[3G]: Band 2/5, 1900Mhz, 850Mhz
*Frequency bands differ between Japan and the United States, so please check in advance whether the frequency bands are compatible.

【Compatible models】
Can be used with SIM-free smartphones, tablets, and Wi-Fi routers (DOCOMO SIM-locked devices cannot be used.)