I’m getting Sim 808 init error

[slooly-do]

I'm facing a quite contradictory problem.
When I run my program, it's saying "init sim error" but the D3 LED on my SIM808 is bipping every 5seconds(which means it has established the connection). Kinda weird.. Because I checked on a phone and my SIM is definitely unblocked,
Does somebody have a possible answer to this ?

In case, here is my program

• Arduino | module
• PIN_TX | TX1
• PIN_RX | RX1
• Power the module, which is successful when the power indicator on the module is ON
  /
  // #define CONNECT_BY_JUMPER 1
  #if CONNECT_BY_JUMPER
  #define PIN_TX 7
  #define PIN_RX 8
  SoftwareSerial mySerial(PIN_TX, PIN_RX);
  DFRobot_SIM808 sim808(&mySerial);
  /*
• Use Leonardo for push-in connection
• Set DIP switch to 3-Arduino, and use the Serial1 of Leonardo for communication
  /
  #elif defined(ARDUINO_AVR_LEONARDO)
  DFRobot_SIM808 sim808(&Serial1);
  /*
• Use UNO & MEGA2560 for push-in connection
• Set DIP switch to 3-Arduino, and use the Serial of UNO and MEGA2560 for communication
  */
  #else
  DFRobot_SIM808 sim808(&Serial);
  #endif

//Mobile phone number,need to change
#define PHONE_NUMBER "009665******15"

//The content of messages sent
#define MESSAGE "hello,world"

void setup() {
#if CONNECT_BY_JUMPER
mySerial.begin(9600);
#elif defined(ARDUINO_AVR_LEONARDO)
Serial1.begin(9600);
#endif
Serial.begin(9600);

//******** Initialize sim808 module *************
while(!sim808.init()) {
delay(1000);
Serial.print("Sim808 init error\r\n");
}
Serial.println("Sim808 init success");
Serial.println("Start to send message ...");

//******** define phone number and text **********
sim808.sendSMS((char *)PHONE_NUMBER, (char *)MESSAGE);
}

void loop() {
//nothing to do
}

[Railroader]

Tx to Tx is wrong! One Tx must be connected to Rx of the receiver and vice vers.
What about the powering?
Schematics would make the suggestions better. Guesses are..... guesses, often wrong.

[xfpd]

You need to be better at cleaning up the code after copy/paste from HTML.

/*
    Arduino | module
    PIN_TX | TX1
    PIN_RX | RX1
    Power the module, which is successful when the power indicator on the module is ON
*/

// #define CONNECT_BY_JUMPER 1
#if CONNECT_BY_JUMPER
#define PIN_TX 7
#define PIN_RX 8
SoftwareSerial mySerial(PIN_TX, PIN_RX);
DFRobot_SIM808 sim808(&mySerial);

/*
Use Leonardo for push-in connection
Set DIP switch to 3-Arduino, and use the Serial1 of Leonardo for communication
*/

#elif defined(ARDUINO_AVR_LEONARDO)
DFRobot_SIM808 sim808(&Serial1);

/*
Use UNO & MEGA2560 for push-in connection
Set DIP switch to 3-Arduino, and use the Serial of UNO and MEGA2560 for communication
*/

#else
DFRobot_SIM808 sim808(&Serial);
#endif

// Mobile phone number,need to change
#define PHONE_NUMBER "009665******15"

// The content of messages sent
#define MESSAGE "hello,world"

void setup() {
#if CONNECT_BY_JUMPER
  mySerial.begin(9600);
#elif defined(ARDUINO_AVR_LEONARDO)
  Serial1.begin(9600);
#endif
  Serial.begin(9600);

  //******** Initialize sim808 module *************
  while (!sim808.init()) {
    delay(1000);
    Serial.print("Sim808 init error\r\n");
  }
  Serial.println("Sim808 init success");
  Serial.println("Start to send message ...");

  //******** define phone number and text **********
  sim808.sendSMS((char *)PHONE_NUMBER, (char *)MESSAGE);
}

void loop() {
  // nothing to do
}