Published by Prolific Technology Inc.

Report an issue with Prolific PL2303 USB-UART.
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Why should I report an Issue with Prolific PL2303 USB-UART?

  1. AppContacter will directly Email your issue/feedback to an apps's customer service once you report an issue and with lots of issues reported, companies will definitely listen to you.
  2. Pulling issues faced by users like you is a good way to draw attention of Prolific Technology Inc. to your problem using the strength of crowds.
  3. Importantly, customers can learn from other customers in case the issue is a common problem that has been solved before.

Prolific PL2303 USB-UART Customer Insights

1. Thats just not cricket, chaps.Not working at all, may be needed an update for new version of Android.Waste of time...Please update with compatibility for 6.0 :( I think you need to add the permission in your apps manifest, from what I read in forums.Working perfectly with android 6 and the latest android 7, as well as with usb type-c.Can't we capture receive and save data in hex,character format?Doesnt do arduino nano clone to s4It does not support pl2303ta.Can I software upgrade in this toolsWorks great.

2. Also, removing support for "discontinued" products as if that suddenly removes them from existing devices in the wild is incredibly short sided.

3. Supported chips dont seem to match chip case markings.

4. As a tinkerer and developer I have to say is ridiculously bad form from a company widely known as Prolific.

5. The IC I'm working with is just marked HX, no A D etc.

Steps to Troubleshoot & Fix Prolific PL2303 USB-UART Issues

1. Fix Prolific PL2303 USB-UART Not Working/Crashes/Errors/Unresponsive & Black/White screen:

  1. Restart Prolific PL2303 USB-UART: Restarting the app will resolve most errors.
  2. Update the Prolific PL2303 USB-UART App. Here is how:
    1. On Android goto PlayStore » Search for "Prolific PL2303 USB-UART" » Open Prolific PL2303 USB-UART » click "Update".
    2. On iPhone, goto AppStore » Your profile » Available Updates » Check for Prolific PL2303 USB-UART » click "UPDATE".
  3. Clear Prolific PL2303 USB-UART app cache: Clearing cached data will force your app to retrieve the latest data directly from Prolific PL2303 USB-UART servers.
    1. On Android, goto Settings » Apps » Select "Prolific PL2303 USB-UART" » click Storage » click "Clear Cache".
  4. Check Prolific PL2303 USB-UART app permissions. If any of these permissions required to use your device's features are disenabled, Prolific PL2303 USB-UART might not work.
  5. Uninstall and reinstall Prolific PL2303 USB-UART. If nothing else has worked, completely uninstall Prolific PL2303 USB-UART then reinstall.
  6. Restart your device. Last, restarting your device can often clear most problems causing Prolific PL2303 USB-UART not working

2. Fix Prolific PL2303 USB-UART Server issues & Internet Connection

  1. Check network connection: An unstable Internet will make Prolific PL2303 USB-UART be unable to connect to it's servers. Ensure your wi-fi is working then restart app.
  2. Disable VPN: VPN can cause connection errors and lead to Prolific PL2303 USB-UART not working. Make sure all VPNs are off
  3. Enable background data: When Background data is turned off, Prolific PL2303 USB-UART may not be able to connect to the Internet when running in the background.

Reported Issues