diff --git a/html/launcher.php b/html/launcher.php
index 150e346..42db277 100755
--- a/html/launcher.php
+++ b/html/launcher.php
@@ -99,6 +99,32 @@ if ($type == "sara_connectNetwork") {
     $command = '/usr/bin/python3 /var/www/nebuleair_pro_4g/SARA/sara_connectNetwork.py ' . $port . ' ' . $networkID . ' ' . $timeout;
     $output = shell_exec($command);
     echo $output;
+    #save to config.json
+    $configFile = '/var/www/nebuleair_pro_4g/config.json';
+    // Read the JSON file
+    $jsonData = file_get_contents($configFile);
+    // Decode JSON data into an associative array
+    $config = json_decode($jsonData, true);
+    // Check if decoding was successful
+    if ($config === null) {
+        die("Error: Could not decode JSON file.");
+    }
+    // Update the value of SARA_R4_networkID
+    $config['SARA_R4_neworkID'] = $networkID; // Replace 42 with the desired value
+    // Encode the array back to JSON with pretty printing
+    $newJsonData = json_encode($config, JSON_PRETTY_PRINT);
+    // Check if encoding was successful
+    if ($newJsonData === false) {
+        die("Error: Could not encode JSON data.");
+    }
+
+    // Write the updated JSON back to the file
+    if (file_put_contents($configFile, $newJsonData) === false) {
+        die("Error: Could not write to JSON file.");
+    }
+
+    echo "SARA_R4_networkID updated successfully.";
+
 }
 
 #SET THE URL for messaging