diff --git a/src/webkit/FrameManager.ts b/src/webkit/FrameManager.ts
index 01c982472b..9cb02ac80e 100644
--- a/src/webkit/FrameManager.ts
+++ b/src/webkit/FrameManager.ts
@@ -329,6 +329,7 @@ export class FrameManager implements PageDelegate {
 
   async setUserAgent(userAgent: string): Promise<void> {
     await this._setUserAgent(this._session, userAgent);
+    await this.reload();
   }
 
   async setJavaScriptEnabled(enabled: boolean): Promise<void> {
diff --git a/test/page.spec.js b/test/page.spec.js
index 9477f5fbf8..9dd5af1cd1 100644
--- a/test/page.spec.js
+++ b/test/page.spec.js
@@ -513,7 +513,7 @@ module.exports.addTests = function({testRunner, expect, headless, playwright, FF
       ]);
       expect(request.headers['user-agent']).toBe('foobar');
     });
-    it.skip(WEBKIT)('should emulate device user-agent', async({page, server}) => {
+    it('should emulate device user-agent', async({page, server}) => {
       await page.goto(server.PREFIX + '/mobile.html');
       expect(await page.evaluate(() => navigator.userAgent)).not.toContain('iPhone');
       await page.setUserAgent(playwright.devices['iPhone 6'].userAgent);