diff --git a/html/saraR4.html b/html/saraR4.html
index 9315819..ea8b29d 100755
--- a/html/saraR4.html
+++ b/html/saraR4.html
@@ -97,7 +97,7 @@
 
                 <div class="card-body">
                   <p class="card-text">SIM card information.</p>
-                  <button class="btn btn-primary" onclick="getSimInfo('ttyAMA2', 1)">Get Data</button>
+                  <button class="btn btn-primary me-1" onclick="getSimInfo('ttyAMA2', 1)">Get Data (ICCID)</button>
                   <div id="loading_ttyAMA2_AT_CCID_" class="spinner-border spinner-border-sm" style="display: none;" role="status"></div>
                   <div id="sim_info_alert"></div>
                   <div class="collapse mt-2" id="sim_info_logs">
@@ -105,6 +105,15 @@
                       <small><code id="response_ttyAMA2_AT_CCID_"></code></small>
                     </div>
                   </div>
+                  <hr>
+                  <button class="btn btn-primary me-1" onclick="getImsiInfo('ttyAMA2', 1)">Get Data (IMSI)</button>
+                  <div id="loading_ttyAMA2_AT_CIMI" class="spinner-border spinner-border-sm" style="display: none;" role="status"></div>
+                  <div id="imsi_info_alert"></div>
+                  <div class="collapse mt-2" id="imsi_info_logs">
+                    <div class="card card-body bg-light">
+                      <small><code id="response_ttyAMA2_AT_CIMI"></code></small>
+                    </div>
+                  </div>
                 </div>
               </div>
             </div>
@@ -792,6 +801,79 @@ function getSimInfo(port, timeout) {
   });
 }
 
+function getImsiInfo(port, timeout) {
+  console.log("Getting IMSI from port " + port);
+
+  $("#loading_ttyAMA2_AT_CIMI").show();
+  $("#imsi_info_alert").empty();
+  $("#response_ttyAMA2_AT_CIMI").empty();
+
+  $.ajax({
+    url: 'launcher.php?type=sara&port=' + port + '&command=' + encodeURIComponent('AT+CIMI') + '&timeout=' + timeout,
+    dataType: 'text',
+    method: 'GET',
+    success: function(response) {
+      console.log("IMSI response:", response);
+      $("#loading_ttyAMA2_AT_CIMI").hide();
+
+      // Store raw logs
+      const formattedLogs = response.replace(/\n/g, "<br>");
+      $("#response_ttyAMA2_AT_CIMI").html(formattedLogs);
+
+      // Parse response to extract IMSI (15-digit number)
+      let alertHtml = '';
+      const imsiMatch = response.match(/(\d{15})/);
+
+      if (response.includes('OK') && imsiMatch) {
+        const imsiNumber = imsiMatch[1];
+        alertHtml = `
+          <div class="alert alert-success py-2 mb-0 mt-2 d-flex justify-content-between align-items-center" role="alert">
+            <div>
+              <strong>IMSI read successfully</strong><br>
+              <small>IMSI: ${imsiNumber}</small>
+            </div>
+            <button class="btn btn-sm btn-outline-secondary" type="button" data-bs-toggle="collapse" data-bs-target="#imsi_info_logs" aria-expanded="false" aria-controls="imsi_info_logs">
+              <small>+</small>
+            </button>
+          </div>`;
+      } else if (response.includes('ERROR') || response.trim() === '' || !response.includes('OK')) {
+        alertHtml = `
+          <div class="alert alert-danger py-2 mb-0 mt-2 d-flex justify-content-between align-items-center" role="alert">
+            <div>
+              <strong>IMSI not available</strong><br>
+              <small>No SIM card or read error</small>
+            </div>
+            <button class="btn btn-sm btn-outline-secondary" type="button" data-bs-toggle="collapse" data-bs-target="#imsi_info_logs" aria-expanded="false" aria-controls="imsi_info_logs">
+              <small>+</small>
+            </button>
+          </div>`;
+      } else {
+        alertHtml = `
+          <div class="alert alert-warning py-2 mb-0 mt-2 d-flex justify-content-between align-items-center" role="alert">
+            <div>
+              <strong>SIM card detected</strong><br>
+              <small>Unable to read IMSI</small>
+            </div>
+            <button class="btn btn-sm btn-outline-secondary" type="button" data-bs-toggle="collapse" data-bs-target="#imsi_info_logs" aria-expanded="false" aria-controls="imsi_info_logs">
+              <small>+</small>
+            </button>
+          </div>`;
+      }
+
+      $("#imsi_info_alert").html(alertHtml);
+    },
+    error: function(xhr, status, error) {
+      console.error('AJAX request failed:', status, error);
+      $("#loading_ttyAMA2_AT_CIMI").hide();
+      $("#imsi_info_alert").html(`
+        <div class="alert alert-danger py-2 mb-0 mt-2" role="alert">
+          <strong>Communication error</strong><br>
+          <small>${error}</small>
+        </div>`);
+    }
+  });
+}
+
 // Cache for operators data
 let operatorsData = null;