帮一个朋友打个广告

短租Google Fi data-only SIM。只有data, 自带翻墙，可以用Google Voice app 或TextNow app 打电话发短信，可以直接用Google and Gmail. Unlocked GSM 手机都可以用。短租 Google Fi data only SIM 的费用是$12/trip up to 21 days or $15/trip up to 30 days, no extra charge if data usage < 5GB, pay extra $2/GB up to a total of 10GB. (Due to limited spaces for short term rental, SIM card will be deactivated one day after your trip is over, trip 日期改了要提前通知) 你把收信人名字与地址发给我免费订卡。Google 会直接寄卡给收信人，大约10天左右能寄到。行程定下来后请尽早通知我排入预约表。收到卡后把要激活的卡正反两面拍照给我。旅行出发日前3天的晚上联系我把卡从群帐号里激活试用一下，确认卡可以用了再付款。有些手机会提示必须下载Google Fi app 激活，可以下载然后disable Google Fi app, 它就不来烦你了。Google Fi 出美国前不要忘了打开roaming, 手机APN必须要设置成h2g2才会在美国以外工作, 把Google Fi 卡放入iPhone, go to settings, cellular, cellular data options, cellular network, change APN to h2g2 for both top cellular data section and bottom LTE Setup section. 有时候要重启手机才能看到APN. 其他注意事项可以参考：https://docs.google.com/document/d/1SJXs7LluTc9Vm5eTjE03bo9jimTbUrcBmU-0jdkycsY

How to get a GoogleVoice number, unlock and GoogleVoice app settings

https://docs.google.com/document/d/1kd0nLTwipMityigWNIG2ZYzQZz09zFQAV0-yzJsH_3E