# Help with running the hello world example on android

**URL:** <https://devforum.zoom.us/t/help-with-running-the-hello-world-example-on-android/95291>\
**Category:** Zoom Apps\
**Created:** [September 18, 2023, 11:47am UTC](https://devforum.zoom.us/t/help-with-running-the-hello-world-example-on-android/95291 "2023-09-18T11:47:04Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![yatanvesh](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/yatanvesh/32/52151_2.png) [@yatanvesh](https://devforum.zoom.us/u/yatanvesh)\
**Post date:** [September 18, 2023, 11:47am UTC](https://devforum.zoom.us/t/help-with-running-the-hello-world-example-on-android/95291/1 "2023-09-18T11:47:04Z")

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**Zoom Apps Configuration**  
( [Hello world example built with nodejs)](https://github.com/zoom/zoomapps-sample-js)  
Zoom app with mobile client support enabled

**Description**  
I got to the point where I’m able to install the app on desktop, that’s working fine. However the same app does not load in the android zoom client, I can see the icon and I’m able to click no it. It just opens a blank page, and I don’t see any API requests to my ngrok server as well during this.

**Error?**  
A blank screen where the hello world text content was expected

**Troubleshooting Routes**  
Tried installing on a new zoom app, updated mobile client to latest version

**How To Reproduce**  
[Setup the hello world example](https://github.com/zoom/zoomapps-sample-js), install it on desktop client. Then login to android client and try to open the application

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<div class="post-metadata">

**Author:** ![yatanvesh](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/yatanvesh/32/52151_2.png) [@yatanvesh](https://devforum.zoom.us/u/yatanvesh)\
**Post date:** [September 27, 2023, 4:16am UTC](https://devforum.zoom.us/t/help-with-running-the-hello-world-example-on-android/95291/2 "2023-09-27T04:16:56Z")

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The problem was with using ngrok, for some reason any content served from ngrok is not shown on mobile web. I got it working by using localtunnel

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**Author:** ![elisa.zoom](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/elisa.zoom/32/47836_2.png) [@elisa.zoom](https://devforum.zoom.us/u/elisa.zoom)\
**Post date:** [September 29, 2023, 6:31pm UTC](https://devforum.zoom.us/t/help-with-running-the-hello-world-example-on-android/95291/3 "2023-09-29T18:31:01Z")

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Thanks for sharing your findings with the community!