Plan to use google fi for trip back to China and Japan this year again. Used last year, worked well. Google fi have 4 months for 2 months $65 for one line ;110 for two lines 50G/month per line https://fi.google.com/about/plans/ Unlimited, Flexible & Group Phone Plans & Rates - Google Fi Wireless
https://fi.google.com/about/plans/ Unlimited, Flexible & Group Phone Plans & Rates - Google Fi Wireless