The most economical thing is to chat online on your mobile phone. QQ is free on the mobile phone here. Of course, the mobile phone is 3G and has wireless Internet access.

It is difficult to receive text messages. In the past, my girlfriend never received text messages she sent me in China, unless she was using China Unicom's CDMA. I'm also here on 25th Street in St. Paul.

When it comes to making phone calls, it is much cheaper for your boyfriend to call you. It only costs about 20 cents per minute. There are many cards here that can be used to call China, such as Global Express and Global Card. I think these two cards are better. The global call time is long, about 13 hours per card, and the calls are stable. Unlike some cards that are easily disconnected, calls can only be made on landlines. To use a mobile phone, you must first activate the service, otherwise it will only last for more than ten minutes. As for the Universal Card, you can directly use a Sao Paulo mobile phone number to make calls anywhere. One card can be used for four hours, but the prerequisite is that the mobile phone number must start with 6, and it must be from a TIM company, just like China Mobile. Same. There is another company here that is owned by OI, like China Unicom.