Can my China Mobile M-Zone Card still be used in European countries?

You can use it, provided that you bring your ID card and 2,000 yuan in cash to any communication 100 business hall for international roaming, and pay a deposit of 2,000 yuan (refundable after returning to China). PS: This is the regulation of Anhui Mobile, and other areas are uncertain.

SMS problem: The charges are different in specific countries, but I remember that it costs money to charge at least one yuan, send one yuan and send and receive SMS.

In addition: when handling, it is best to ask whether the mobile phone system in the country you are going to is the same as that in China. If it is not the same, you need to go to the relevant mobile department to handle the mobile phone rental business (that is, you can rent a mobile phone that can be used in that country and return it to mobile when you come back).