diff --git a/package.json b/package.json
index 46db5bf..3772962 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "speed-testjs",
-  "version": "1.0.30",
+  "version": "1.0.31",
   "description": "measure internet bandwidth",
   "main": "index.js",
   "author": "Maulan Byron",
diff --git a/public/examples/download/downloadApp.js b/public/examples/download/downloadApp.js
index b5dd89f..ed83da9 100644
--- a/public/examples/download/downloadApp.js
+++ b/public/examples/download/downloadApp.js
@@ -198,6 +198,15 @@
         }
     }
 
+    function mobileAndTabletcheck() {
+        var check = false;
+        (function(a) {
+            if(/(android|bb\d+|meego).+mobile|avantgo|bada\/|blackberry|blazer|compal|elaine|fennec|hiptop|iemobile|ip(hone|od)|iris|kindle|lge |maemo|midp|mmp|mobile.+firefox|netfront|opera m(ob|in)i|palm( os)?|phone|p(ixi|re)\/|plucker|pocket|psp|series(4|6)0|symbian|treo|up\.(browser|link)|vodafone|wap|windows ce|xda|xiino|android|ipad|playbook|silk/i.test(a)||/1207|6310|6590|3gso|4thp|50[1-6]i|770s|802s|a wa|abac|ac(er|oo|s\-)|ai(ko|rn)|al(av|ca|co)|amoi|an(ex|ny|yw)|aptu|ar(ch|go)|as(te|us)|attw|au(di|\-m|r |s )|avan|be(ck|ll|nq)|bi(lb|rd)|bl(ac|az)|br(e|v)w|bumb|bw\-(n|u)|c55\/|capi|ccwa|cdm\-|cell|chtm|cldc|cmd\-|co(mp|nd)|craw|da(it|ll|ng)|dbte|dc\-s|devi|dica|dmob|do(c|p)o|ds(12|\-d)|el(49|ai)|em(l2|ul)|er(ic|k0)|esl8|ez([4-7]0|os|wa|ze)|fetc|fly(\-|_)|g1 u|g560|gene|gf\-5|g\-mo|go(\.w|od)|gr(ad|un)|haie|hcit|hd\-(m|p|t)|hei\-|hi(pt|ta)|hp( i|ip)|hs\-c|ht(c(\-| |_|a|g|p|s|t)|tp)|hu(aw|tc)|i\-(20|go|ma)|i230|iac( |\-|\/)|ibro|idea|ig01|ikom|im1k|inno|ipaq|iris|ja(t|v)a|jbro|jemu|jigs|kddi|keji|kgt( |\/)|klon|kpt |kwc\-|kyo(c|k)|le(no|xi)|lg( g|\/(k|l|u)|50|54|\-[a-w])|libw|lynx|m1\-w|m3ga|m50\/|ma(te|ui|xo)|mc(01|21|ca)|m\-cr|me(rc|ri)|mi(o8|oa|ts)|mmef|mo(01|02|bi|de|do|t(\-| |o|v)|zz)|mt(50|p1|v )|mwbp|mywa|n10[0-2]|n20[2-3]|n30(0|2)|n50(0|2|5)|n7(0(0|1)|10)|ne((c|m)\-|on|tf|wf|wg|wt)|nok(6|i)|nzph|o2im|op(ti|wv)|oran|owg1|p800|pan(a|d|t)|pdxg|pg(13|\-([1-8]|c))|phil|pire|pl(ay|uc)|pn\-2|po(ck|rt|se)|prox|psio|pt\-g|qa\-a|qc(07|12|21|32|60|\-[2-7]|i\-)|qtek|r380|r600|raks|rim9|ro(ve|zo)|s55\/|sa(ge|ma|mm|ms|ny|va)|sc(01|h\-|oo|p\-)|sdk\/|se(c(\-|0|1)|47|mc|nd|ri)|sgh\-|shar|sie(\-|m)|sk\-0|sl(45|id)|sm(al|ar|b3|it|t5)|so(ft|ny)|sp(01|h\-|v\-|v )|sy(01|mb)|t2(18|50)|t6(00|10|18)|ta(gt|lk)|tcl\-|tdg\-|tel(i|m)|tim\-|t\-mo|to(pl|sh)|ts(70|m\-|m3|m5)|tx\-9|up(\.b|g1|si)|utst|v400|v750|veri|vi(rg|te)|vk(40|5[0-3]|\-v)|vm40|voda|vulc|vx(52|53|60|61|70|80|81|83|85|98)|w3c(\-| )|webc|whit|wi(g |nc|nw)|wmlb|wonu|x700|yas\-|your|zeto|zte\-/i.test(a.substr(0,4)));
+            check = true;
+        })(navigator.userAgent||navigator.vendor||window.opera);
+        return check;
+    };
+
     function downloadTest(version) {
         var currentTest = 'download';
         option.series[0].data[0].value = 0;
@@ -318,8 +327,16 @@
             }
         }
 
+        var isHandheld = mobileAndTabletcheck();
+        if (isHandheld) {
+            downloadCurrentRuns = 4;
+            downloadSize = 20000000;
+            downloadTestTimeout = 10000;
+            downloadTestLength = 10000;
+        }
+
         var downloadHttpConcurrentProgress = new window.downloadHttpConcurrentProgress(urls, 'GET', downloadCurrentRuns, downloadTestTimeout, downloadTestLength, downloadMovingAverage, downloadHttpOnComplete, downloadHttpOnProgress,
-            downloadHttpOnAbort, downloadHttpOnTimeout, downloadHttpOnError, downloadSize, downloadProgressInterval, monitorInterval);
+            downloadHttpOnAbort, downloadHttpOnTimeout, downloadHttpOnError, downloadSize, downloadProgressInterval, monitorInterval, isHandheld);
 
         downloadHttpConcurrentProgress.initiateTest();
     }
diff --git a/public/lib/downloadHttpConcurrentProgress.js b/public/lib/downloadHttpConcurrentProgress.js
index 97d6d4a..ed43240 100644
--- a/public/lib/downloadHttpConcurrentProgress.js
+++ b/public/lib/downloadHttpConcurrentProgress.js
@@ -33,7 +33,7 @@
      * @param function callback function for test suite error event
      **/
     function downloadHttpConcurrentProgress(urls,  type, concurrentRuns, timeout, testLength, movingAverage, callbackComplete, callbackProgress, callbackAbort,
-                                            callbackTimeout, callbackError, size, progressIntervalDownload, monitorInterval) {
+                                            callbackTimeout, callbackError, size, progressIntervalDownload, monitorInterval, isHandheld) {
         this.urls = urls;
         this.size = size;
         this.type = type;
@@ -70,6 +70,8 @@
         this.resultsCount = 0;
         //results to send to client
         this.downloadResults = [];
+        // flag to track handheld devices
+        this.isHandheld = isHandheld;
     }
 
     /**
@@ -121,6 +123,11 @@
 
         //store results
         this._storeResults(result);
+        if (this.isHandheld) {
+            // setting concurrent runs to 1. As soon as one connection completes it start's another
+            // connection of the same size. This change is only for mobile devices.
+            this.concurrentRuns = 1;
+        }
         this.start();
         };
 
diff --git a/public/speed-testJS.js b/public/speed-testJS.js
index 961b30a..68d949a 100644
--- a/public/speed-testJS.js
+++ b/public/speed-testJS.js
@@ -351,6 +351,16 @@
     }
   }
 
+  function mobileAndTabletcheck() {
+    var check = false;
+    (function(a) {
+        if(/(android|bb\d+|meego).+mobile|avantgo|bada\/|blackberry|blazer|compal|elaine|fennec|hiptop|iemobile|ip(hone|od)|iris|kindle|lge |maemo|midp|mmp|mobile.+firefox|netfront|opera m(ob|in)i|palm( os)?|phone|p(ixi|re)\/|plucker|pocket|psp|series(4|6)0|symbian|treo|up\.(browser|link)|vodafone|wap|windows ce|xda|xiino|android|ipad|playbook|silk/i.test(a)||/1207|6310|6590|3gso|4thp|50[1-6]i|770s|802s|a wa|abac|ac(er|oo|s\-)|ai(ko|rn)|al(av|ca|co)|amoi|an(ex|ny|yw)|aptu|ar(ch|go)|as(te|us)|attw|au(di|\-m|r |s )|avan|be(ck|ll|nq)|bi(lb|rd)|bl(ac|az)|br(e|v)w|bumb|bw\-(n|u)|c55\/|capi|ccwa|cdm\-|cell|chtm|cldc|cmd\-|co(mp|nd)|craw|da(it|ll|ng)|dbte|dc\-s|devi|dica|dmob|do(c|p)o|ds(12|\-d)|el(49|ai)|em(l2|ul)|er(ic|k0)|esl8|ez([4-7]0|os|wa|ze)|fetc|fly(\-|_)|g1 u|g560|gene|gf\-5|g\-mo|go(\.w|od)|gr(ad|un)|haie|hcit|hd\-(m|p|t)|hei\-|hi(pt|ta)|hp( i|ip)|hs\-c|ht(c(\-| |_|a|g|p|s|t)|tp)|hu(aw|tc)|i\-(20|go|ma)|i230|iac( |\-|\/)|ibro|idea|ig01|ikom|im1k|inno|ipaq|iris|ja(t|v)a|jbro|jemu|jigs|kddi|keji|kgt( |\/)|klon|kpt |kwc\-|kyo(c|k)|le(no|xi)|lg( g|\/(k|l|u)|50|54|\-[a-w])|libw|lynx|m1\-w|m3ga|m50\/|ma(te|ui|xo)|mc(01|21|ca)|m\-cr|me(rc|ri)|mi(o8|oa|ts)|mmef|mo(01|02|bi|de|do|t(\-| |o|v)|zz)|mt(50|p1|v )|mwbp|mywa|n10[0-2]|n20[2-3]|n30(0|2)|n50(0|2|5)|n7(0(0|1)|10)|ne((c|m)\-|on|tf|wf|wg|wt)|nok(6|i)|nzph|o2im|op(ti|wv)|oran|owg1|p800|pan(a|d|t)|pdxg|pg(13|\-([1-8]|c))|phil|pire|pl(ay|uc)|pn\-2|po(ck|rt|se)|prox|psio|pt\-g|qa\-a|qc(07|12|21|32|60|\-[2-7]|i\-)|qtek|r380|r600|raks|rim9|ro(ve|zo)|s55\/|sa(ge|ma|mm|ms|ny|va)|sc(01|h\-|oo|p\-)|sdk\/|se(c(\-|0|1)|47|mc|nd|ri)|sgh\-|shar|sie(\-|m)|sk\-0|sl(45|id)|sm(al|ar|b3|it|t5)|so(ft|ny)|sp(01|h\-|v\-|v )|sy(01|mb)|t2(18|50)|t6(00|10|18)|ta(gt|lk)|tcl\-|tdg\-|tel(i|m)|tim\-|t\-mo|to(pl|sh)|ts(70|m\-|m3|m5)|tx\-9|up(\.b|g1|si)|utst|v400|v750|veri|vi(rg|te)|vk(40|5[0-3]|\-v)|vm40|voda|vulc|vx(52|53|60|61|70|80|81|83|85|98)|w3c(\-| )|webc|whit|wi(g |nc|nw)|wmlb|wonu|x700|yas\-|your|zeto|zte\-/i.test(a.substr(0,4)))
+        check = true;
+    })(navigator.userAgent||navigator.vendor||window.opera);
+    return check;
+  };
+
+
   function downloadTest(version) {
     var currentTest = 'download';
     option.series[0].data[0].value = 0;
@@ -460,8 +470,17 @@
 
       }
     }
+
+    var isHandheld = mobileAndTabletcheck();
+    if (isHandheld) {
+        downloadCurrentRuns = 4;
+        downloadSize = 20000000;
+        downloadTestTimeout = 10000;
+        downloadTestLength = 10000;
+    }
+
     var downloadHttpConcurrentProgress = new window.downloadHttpConcurrentProgress(downloadUrls, 'GET', downloadCurrentRuns, downloadTestTimeout, downloadTestLength, downloadMovingAverage, downloadHttpOnComplete, downloadHttpOnProgress,
-      downloadHttpOnAbort, downloadHttpOnTimeout, downloadHttpOnError,downloadSize, downloadProgressInterval,downloadMonitorInterval);
+      downloadHttpOnAbort, downloadHttpOnTimeout, downloadHttpOnError,downloadSize, downloadProgressInterval,downloadMonitorInterval, isHandheld);
 
     downloadHttpConcurrentProgress.initiateTest();
   }