diff --git a/mms-lib/include/mms_connman.h b/mms-lib/include/mms_connman.h
index 235a426..d5c85be 100644
--- a/mms-lib/include/mms_connman.h
+++ b/mms-lib/include/mms_connman.h
@@ -19,6 +19,7 @@
 
 typedef struct mms_connman_class {
     GObjectClass parent;
+    char* (*fn_default_imsi)(MMSConnMan* cm);
     MMSConnection* (*fn_open_connection)(MMSConnMan* cm, const char* imsi,
         gboolean user_request);
 } MMSConnManClass;
@@ -35,6 +36,14 @@ void
 mms_connman_unref(
     MMSConnMan* cm);
 
+/**
+ * Returns default (first available) IMSI or NULL if SIM is not present
+ * or not configured. Caller must g_free() the returned string.
+ */
+char*
+mms_connman_default_imsi(
+    MMSConnMan* cm);
+
 /**
  * Creates a new connection or returns the reference to an aready active one.
  * The caller must release the reference.
diff --git a/mms-lib/src/mms_connman.c b/mms-lib/src/mms_connman.c
index c2fc2f5..257e09e 100644
--- a/mms-lib/src/mms_connman.c
+++ b/mms-lib/src/mms_connman.c
@@ -55,6 +55,23 @@ mms_connman_init(
 {
 }
 
+/**
+ * Returns default (first available) IMSI or NULL if SIM is not present
+ * or not configured. Caller must g_free() the returned string.
+ */
+char*
+mms_connman_default_imsi(
+    MMSConnMan* cm)
+{
+    if (cm) {
+        MMSConnManClass* klass = MMS_CONNMAN_GET_CLASS(cm);
+        if (klass->fn_default_imsi) {
+            return klass->fn_default_imsi(cm);
+        }
+    }
+    return NULL;
+}
+
 /**
  * Creates a new connection or returns the reference to an aready active one.
  * The caller must release the reference.
diff --git a/mms-ofono/src/mms_ofono_connman.c b/mms-ofono/src/mms_ofono_connman.c
index 6651ba7..1595b2d 100644
--- a/mms-ofono/src/mms_ofono_connman.c
+++ b/mms-ofono/src/mms_ofono_connman.c
@@ -37,6 +37,24 @@ G_DEFINE_TYPE(MMSOfonoConnMan, mms_ofono_connman, MMS_TYPE_CONNMAN);
 #define MMS_OFONO_CONNMAN(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),\
     MMS_TYPE_OFONO_CONNMAN, MMSOfonoConnMan))
 
+/**
+ * Returns IMSI of the default SIM
+ */
+static
+char*
+mms_ofono_connman_default_imsi(
+    MMSConnMan* cm)
+{
+    MMSOfonoConnMan* ofono = MMS_OFONO_CONNMAN(cm);
+    if (ofono->man) {
+        MMSOfonoModem* modem = mms_ofono_manager_default_modem(ofono->man);
+        if (modem && modem->imsi) {
+            return g_strdup(modem->imsi);
+        }
+    }
+    return NULL;
+}
+
 /**
  * Creates a new connection or returns the reference to an aready active one.
  * The caller must release the reference.
@@ -153,6 +171,7 @@ void
 mms_ofono_connman_class_init(
     MMSOfonoConnManClass* klass)
 {
+    klass->fn_default_imsi = mms_ofono_connman_default_imsi;
     klass->fn_open_connection = mms_ofono_connman_open_connection;
     G_OBJECT_CLASS(klass)->dispose = mms_ofono_connman_dispose;
 }
diff --git a/mms-ofono/src/mms_ofono_manager.c b/mms-ofono/src/mms_ofono_manager.c
index 697ef3f..e04d57f 100644
--- a/mms-ofono/src/mms_ofono_manager.c
+++ b/mms-ofono/src/mms_ofono_manager.c
@@ -155,6 +155,21 @@ mms_ofono_manager_modem_imsi_find_cb(
     return modem->imsi && !strcmp(modem->imsi, imsi);
 }
 
+MMSOfonoModem*
+mms_ofono_manager_default_modem(
+    MMSOfonoManager* ofono)
+{
+    if (g_hash_table_size(ofono->modems) > 0) {
+        GHashTableIter iter;
+        gpointer key, value = NULL;
+        g_hash_table_iter_init(&iter, ofono->modems);
+        if (g_hash_table_iter_next(&iter, &key, &value)) {
+            return value;
+        }
+    }
+    return NULL;
+}
+
 MMSOfonoModem*
 mms_ofono_manager_modem_for_imsi(
     MMSOfonoManager* ofono,
diff --git a/mms-ofono/src/mms_ofono_manager.h b/mms-ofono/src/mms_ofono_manager.h
index 76e40ae..92b568d 100644
--- a/mms-ofono/src/mms_ofono_manager.h
+++ b/mms-ofono/src/mms_ofono_manager.h
@@ -25,6 +25,10 @@ void
 mms_ofono_manager_free(
     MMSOfonoManager* ofono);
 
+MMSOfonoModem*
+mms_ofono_manager_default_modem(
+    MMSOfonoManager* ofono);
+
 MMSOfonoModem*
 mms_ofono_manager_modem_for_imsi(
     MMSOfonoManager* ofono,