「esim」使用英国号码依赖小火煎的IOS用户，开启wificalling时候TUNNEL如何设置？

UK的运营商比较多，有些支持WIFICALLING，有些不支持，使用小火煎的配置也有差异，稍不注意就会引起都开不起该功能的情况，
Some carriers in UK support wifcalling, VPN setting may vary to different carrier as well. For iOS users who rely on Shadowsocks to enable Wificalling, pay attention to the settings of the TUNNEL in Shadowsocks or you will be crazy all the time.

先对已知道的WIFICALLING在小火煎里面TUNNEL得配置做个汇总，希望对各位有所帮助
List all the carrier here with the TUNNEL setting, hope it may help.

1. Giffgaff、EE、Ctexcel这三家需要把TUNNEL中的三个开关开启
it's essential to enable these 3 functions in TUNNEL settings for Giffgaff、EE、Ctexcel.



2.VOXI、Vodafone则无需设置TUNNEL中的三个开关开启
VOXI、Vodafone do not apply to the method above.



看得出来VOXI和Vodafone是比较容易拉起来的，不用过多配置

厉害了

开不起来 wifi-c