In which area is it difficult to send text messages on mobile phone cards?

Whether the SMS of mobile phone card is blocked has nothing to do with the region, but depends on the user's usage behavior and whether the SMS content meets the relevant regulations and standards. If users send illegal, illegal or harassing information, or are identified as spammers by operators, they may be blocked or turned off.

In China, short messages on mobile phone cards are required to comply with the People's Republic of China (PRC) Telecom Regulations and other relevant regulations, and illegal short messages are not allowed to be sent. Specific provisions include but are not limited to:

1. Don't send spam, including advertising, promotion, fraud, spam, etc.

2. Don't send information suspected of harassment, including frequent text messages and telephone harassment;

3. Do not send information that violates social ethics, including pornography, violence, terror, etc.;

4. Don't send information that violates national security, including political sensitivity, terrorism and separatism.

Therefore, no matter where you are, as long as you abide by the relevant regulations and standards, the short messages on your mobile phone card will not be blocked. On the contrary, if you don't follow the rules, you may be blocked or closed.