手机

• *#06#
  • DeviceInfo
  • IMEI
• *#*#4636#*#*
• *#*#8255#*#*
• *#*#759#*#*
• ISP
  • ultra mobile
  • red pocket - 无法注册 GV

Red Pocket

• ICCID
• IMEI
• https://www.redpocket.com/activate
• https://www.redpocket.com/coverage
• https://help.redpocket.com/what-is-wifi-calling-and-can-i-use-it-with-my-red-pocket-service

E911 Address

• https://tools.usps.com/go/ZipLookupAction!input.action
  • ZIP Code™ by Address

Random Address

• https://codebeautify.org/random-street-address
• https://www.randomlists.com/new-york-addresses

FAQ

• Wifi Calling -> WLAN Calling
  • iPhone
    • https://support.apple.com/en-us/HT203032
• Use case
  • Twitter/X
  • Google Voice
  • WhatsApp
  • Line
  • Telegram

VPN

iPhone 开启 VPN 时不能用 Wifi Calling

Policy

• https://help.twitter.com/en/managing-your-account/phone-number-faqs

Free Msg: Unable to send message - Message Blocking is active.

Wifi Calling 没开通时发送短信

国际冠码

PREFIX+CODE+REGION+xxxx-xxxx

• + -> 00

loc	prefix	code
CN	00	86
HK	001	852
TW	002	886
澳门	01	853
US	011	1
澳大利亚	011	1
JP		+81

• https://zh.wikipedia.org/zh-cn/国际冠码列表
• https://zh.wikipedia.org/zh-cn/国际电话区号列表