What does the ending of "dead cell phone" mean? What do you mean by receiving Li's text message?

At the end of Mobile Phone, I received a short message from my mobile phone, which means that the curse is not over.

This film is the second feature film directed by Greg Marcks. The story tells that an American engineer gets a mysterious mobile phone, and if he follows the instructions of the mobile phone, he will get a huge fortune. However, this mobile phone finally caught him in a deadly international conspiracy.

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Peterson (Shane West) is an American engineer. One day, someone mailed him a mobile phone. This is a mobile phone that can predict the future, and Peterson used it to avoid an air crash. Later, Peterson came to the Czech Republic. In a casino, he texted him on his mobile phone and won a lot of money.

His every move immediately caught the attention of the casino leader John (edward burns). John wants to know how Peterson cheated on his mobile phone.

So he sent the beautiful young Camilla (Tamara Feldman) to design Peterson. When John gambles with his mobile phone again, Special Agent Grant (Ving Rhames) arrests him on the grounds that Peterson has committed fraud. But in fact, Grant knows that anyone who uses this kind of mobile phone will eventually die. He is the person in charge of investigating this case.