Contact NanoVNA WebApp Customer Service

Why should I report an Issue with NanoVNA WebApp?

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 cho45 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.

1. NanoVNA WebApp is an open source Android application for NanoVNA / NanoVNA-H.

2. NanoVNA is a small standalone VNA (Vector Network Analyzer).

3. It works by connecting with NanoVNA via USB.

4. A USB OTG cable connector is required to connect NanoVNA to an Android smartphone.

1. Appreciate your time and effort s for the community.have installed this in both my V20 android and the Kindle Fire 10 and it works as advertised you have to purchase the OTG USB cable, in my case USB "C" to USB "A" Female so that you have the correct connection to plug the NanoVNA usb cable into.

2. It's a hardware issue.This app is wonderful, lets me analyze antennas away from my desk and do some twiddling and initial adjustments in the field, save the results, then analyze them in NanoVNA Saver at my desktop to look at deeper details and plan adjustments on matching, etc.Works better than the NanoVNA Saver PC Softw are.

3. Messages at low part of screen cover a buttons.Works with all my NanoVNA devices provides similar (sometimes better) functionality than PC software.

4. Display doesn't show start-end of scan range, eg 7mhz at each step on 40 meter band - maybe has only 1 digit resolution.

5. It connects up fine with the usb cable that came with the nanoVNA device.

6. As with the Computer based software you have to connect and power on the nanoVNA before starting the app.

7. I also haven't figured out how to get the app to display numbers (swr impedance, etc) like the analyzer display.

8. Where does it put the files it saves? It might be a good app if I could figure out how to get it to give the capability I think it should have.Update to my earlier review.

9. On latest Android the saved graphs are not found while captures are in document folder.

10. Found files in Documents, why Files didn't show them initially I don't know.

11. Cannot see an SWR and impedance in '50Ω 487nH' format at the same screen.

1. Fix NanoVNA WebApp Not Working/Crashes/Errors/Unresponsive & Black/White screen:

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

2. Fix NanoVNA WebApp Server issues & Internet Connection

1. Check network connection: An unstable Internet will make NanoVNA WebApp 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 NanoVNA WebApp not working. Make sure all VPNs are off
3. Enable background data: When Background data is turned off, NanoVNA WebApp may not be able to connect to the Internet when running in the background.