Android 15 Feb 2025 Security Patches

My Google Pixel 8 Pro forced an update to Android 15 for security reasons and now I cannot access the KrakenSDR Server Settings from the app. I only get a blank page when I connect to the IP address of the Pi5 and if I try to run the app anyway, nothing logs, so I assume it is not communicating with the server. Net Analyzer also gives a notice that IDing IP addresses on the hot spot network is no longer allowed. Is anyone else having this issue and have you found a work around? Thanks in advance.

Also note, using the app on Samsung tablet connected to the same phone hot spot has the same issue. Only get a blank page when it connects to the server IP address.

Can you still connect to the page via the Chrome browser?

Observations on Android 15:

  • After updating from app version 3.6.9 to 3.7.0, on-screen tracking/updates start to bog down after about 30 minutes and soon stop altogether: On-screen display becomes intermittent/sluggish. A reboot of the tablet will restore operation, but I haven’t checked to see if simply exiting/restarting will do so.

  • On app version 3.6.9 (haven’t checked on 3.7.0 due to its stopping working on its own) after running for a while, all map tiles would disappear (blank screen other than indicator for current location - added markers disappear as well) and it would no longer display bearings and it would stop updating vehicle speed on the screen. This often occurs after going into and coming back out of config menus. Connectivity to the RPi was confirmed as data updates are continuing on the web page. It takes a complete reboot of the tablet to restore operation.

Regards,

CT

Yes, I can still connect to the server via the web browser. After rebooting the system several times, it is now working through the app.

Separate note, perhaps related. When playing back the log files, the IP address changes in the app settings. The issue I was experiencing may have been due to the wrong IP address, but I check that every time I start the system. Thanks for looking the reply and looking into this.

Thank you CT. I am running 3.7.0.

Hm very odd, nothing in 3.7.0 relating to performance should have changed. It’s just a fix for the Android 15 padding requirements. Will look into it.

Can you please share exactly what device you are using?

Can you please share what device you are using? I haven’t been able to replicate this on my devices or the simulator.

Sorry for the delay in replying - there seem to be a number of problems stacked up.

First, the device: I’ve been mostly using a generic, cheap Android 15 tablet (“Headwolf” brand, if that helps). For the most part, the issue was buttons appearing on top of the app - but with the screen as large as it is, they are a minor annoyance rather than preventing it to be used.

The “other” problems:

Perhaps the problem, I noticed that I stopped getting updates from the Pi5: I would go to the server (on the Pi) and see, in the configuration screen, signal levels varying as I would expect - but if I went to the spectrum screen I would see no data and a frequency scale starting at “0” on the left side - and in the DOA Estimation screen - a straight line at zero degrees.

The above would happen no matter how I accessed the unit - different platforms/computers and browsers showed the same problem, implying that the application on the Pi5 was hosed somehow.

Re-imaging the SD card restored “normal” operation of the server on the Pi - but even though I can now see the stats and the DOA Estimates via the KrakenSDR app, I’m no longer getting any bearing information from it, despite setting thresholds (velocity, quality, signal level) to cause it to “always” show DOA data, I get nothing: This is after deleting/reinstalling on the Android tablet - and it doesn’t work on the previously-working Android 11 phone, either.

There are still a few things that I can try, but this is quite unlike when I originally set it up and it “just worked” with no issues: Now, I can’t get anything to work with the app.

FWIW, I’m connecting using a non Internet-connected private network which seems stable (e.g. I can connect to the Pi5).

CT

A bit more information.

As noted, I re-flashed the SD card for the RPi5 - but while I can, once again, get a DOA indication via the web interface, two of the Android devices will no longer work.

Following the “troubleshooting” I see that I can get to the RPi’s UI via port 8080 and also get the raw “DOA_value” data from port 8081 - this on both of the devices that no longer working App.

I have also disabled “Pause Data Collection When Stationary” in the app, as well as made sure that the “confidence” value is zero.

I can download maps and they will display properly, and I see my own velocity and my marker moves along the map as it should - but I’m getting absolutely nothing from the Pi itself: Again, I can get to the Pi interface via the app itself and can see the configuration screen and the DOA compass view just fine.

I suspect that there’s something amiss with App version 3.7.0: Since both my no-name Android 15 tablet and my Motorola Razr (Android 11) phone have updated it hasn’t worked.

I then remembered that I had tried it originally using BlueStacks which worked, but was painfully slow: This - running App version 3.6.something - DOES work.

Is there something that I’m missing here - perhaps some permission setting?

At the moment, I’m considering side-loading an older version, but I’m not sure that I trust any of the sketchy web sites - or the equally-sketchy “xapk” apps out there.

Any suggestions on where to go from here?

Thanks,

CT

Are you sure that the signal was not just being squelched (as in there was currently no signal in the VFO)? This is exactly what I would expect to happen when the KrakenSDR is squelching.

I double checked the changes in 3.7.0 and there is really nothing changed with the network code, it was just an adjustment to rescale things properly under the new Android 15 requirements.

These are probably not real, the app is protected and it shouldn’t be possible to be on third party sites.