diff --git a/Src/AtGsmTelitLe910_Ecall.c b/Src/AtGsmTelitLe910_Ecall.c
index 37e576c..bf5dc01 100644
--- a/Src/AtGsmTelitLe910_Ecall.c
+++ b/Src/AtGsmTelitLe910_Ecall.c
@@ -48,6 +48,14 @@ AtCommandResult AtGsmTelitLe910_SIMCardDetect(tAtCmd *env) {
     return AtCmdOkErrAnswer(env, env->stdRxTimeout);
 }
 
+AtCommandResult AtGsmTelitLe910_SIMCardNoDetect(tAtCmd *env) {
+    AtCmdPrepare(env);
+
+    AtCmdSendStatic(env, "AT#SIMDET=0\r\n");
+
+    return AtCmdOkErrAnswer(env, env->stdRxTimeout);
+}
+
 AtCommandResult AtGsmTelitLe910_EcallWriteMsdToModem(tAtCmd *env, uint8_t *msd, size_t msdLength) {
 
     //prepare msd data packet