What if the mobile phone only receives SMS packages?

You can consider Unicom's 4G national combination package, and you must choose the domestic traffic package. The minimum voice packages such as 8 yuan are optional packages, so you don't need to choose them. In this way, you can receive short messages abroad, and it is free. You can use this number to make calls and surf the Internet abroad and charge a usage fee. If you don't use it, you will go to 8 yuan a month, and there is no other fee. The premise is that the number must be open for international roaming rights and can be opened for a long time. Because the business rules of different provinces will be different, I suggest you consult the local hotline 100 10.