A method for synchronous operations of text message data between a cell phone in form of a feature phone lacking touch control functions and a smartphone having touch control capabilities, a screen of the smartphone being larger than a screen of the feature phone comprising: the feature phone receives an operation request regarding text message data from a user on a user interface, the operation request comprising a text message deletion request (S101); the feature phone converts the operation request to an operation request with commands and parameters (S202); the feature phone sends the operation request with commands and parameters via a Bluetooth serial port to the smartphone (S102); the smartphone receives the operation request with commands and parameters sent by the feature phone (S103; S207); the smartphone carries out analysis on the operation request with commands and parameters, and obtains a first analysis result, the first analysis result comprising a text message deletion request (S305); according to the first analysis result, the smartphone carries out an operation corresponding to the operation request, and obtains a first operation result, the first operation result comprising a text message deletion result (S104; S306); the smartphone sends the first operation result to the feature phone (S105); the feature phone receives the first operation result sent by the smartphone (S106, S208); the feature phone carries out analysis on the first operation result and obtains a second analysis result, the second analysis result comprising text message deletion result sent by the smartphone (S309); according to the second analysis result, the feature phone carries out a second operation in form of a text message deletion operation corresponding to the first operation result, obtains a second operation result (S107, 310), and the feature phone displays the second operation result of the text message deletion operation on the screen of the feature phone. the feature phone receives an operation request regarding text message data from a user on a user interface, the operation request comprising a text message deletion request (S101); the feature phone converts the operation request to an operation request with commands and parameters (S202); the feature phone sends the operation request with commands and parameters via a Bluetooth serial port to the smartphone (S102); the smartphone receives the operation request with commands and parameters sent by the feature phone (S103; S207); the smartphone carries out analysis on the operation request with commands and parameters, and obtains a first analysis result, the first analysis result comprising a text message deletion request (S305); according to the first analysis result, the smartphone carries out an operation corresponding to the operation request, and obtains a first operation result, the first operation result comprising a text message deletion result (S104; S306); the smartphone sends the first operation result to the feature phone (S105); the feature phone receives the first operation result sent by the smartphone (S106, S208); the feature phone carries out analysis on the first operation result and obtains a second analysis result, the second analysis result comprising text message deletion result sent by the smartphone (S309); according to the second analysis result, the feature phone carries out a second operation in form of a text message deletion operation corresponding to the first operation result, obtains a second operation result (S107, 310), and the feature phone displays the second operation result of the text message deletion operation on the screen of the feature phone. <EOS>