diff --git a/lib/helper/WebDriver.js b/lib/helper/WebDriver.js
index a53d08787..cdd0229f2 100644
--- a/lib/helper/WebDriver.js
+++ b/lib/helper/WebDriver.js
@@ -1800,6 +1800,13 @@ class WebDriver extends Helper {
 
     const originalWindowSize = await this.browser.getWindowSize()
 
+    // this case running on device, so we could not set the windowSize
+    if (this.browser.isMobile) {
+      this.debug(`Screenshot has been saved to ${outputFile}, size: ${originalWindowSize.width}x${originalWindowSize.height}`)
+      const buffer = await this.browser.saveScreenshot(outputFile)
+      return buffer
+    }
+
     let { width, height } = await this.browser
       .execute(function () {
         return {