What are you using, a phone card or WiFi ?
5 Answers
It is recommended to use local SIM cards. Domestic roaming numbers cannot be used on Google Maps and are cheaper than roaming...
Use domestic mobile phones directly, with a daily limit of 30 yuan and unlimited traffic.
Wi-Fi Wi-Fi
I bought a card from the local operator AT&T in the United States. I have run through many states and feel that the signal and network are both good. A package of $45 per month with 4G high-speed network is enough. Deposit 100 dollars in it, and apply for number retention and disconnection one day before returning to China. It is very convenient to continue using it every time you return to the United States by finding an AT&T store. (After returning home, please keep this phone card well and do not lose it.) I hope this can help you.
I bought AT&T from Taobao. The phone can make unlimited calls to the US and domestic, with 6G of 4G traffic and unlimited 3G traffic. It has been working very well for a month.