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Phone UI Always Crashes in the Same Store (lemmy.world)

submitted 2 months ago by njordomir@lemmy.world to c/technology@lemmy.world

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I visit a store regularly and every time to try to reference something on my phone in that store, I get UI crashes. The phone works fine everywhere else. Its a Oneplus9 running a custom rom.

Two questions:

What could cause this? Is some sort of interference in the store crashing things? Is the bright light causing the luminosity sensor to overwhelm. Is the store trying to mess with or track my phone in some way and all my modifications, privacy configurations, etc. are choosing to crash instead of allow it?
Do you have any ideas about how I can figure out what is causing it? Spectrum analysis with a flipper zero or something similar, logs of some kind on the phone, process of elimination? Links are appreciated if it requires advanced nerd cred (I'm probably intermediate with Linux, Android and tech in general, except networking where my knowledge is mediocre bit growing).

I am beyond curious what is going on because it is so weird that it works perfectly everywhere, but the UI keeps rebooting in this one store.

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[–] njordomir@lemmy.world 7 points 2 months ago (2 children)

Found a very similar report, but I'm on TMobile, not FI: https://support.google.com/fi/thread/98016588/my-supermarket-reboots-my-phone?hl=en

[–] Switchy85@sh.itjust.works 7 points 2 months ago (1 children)

Just fyi, I believe T-Mobile is one of the main networks that Fi uses. So it's still possibly network related.

[–] njordomir@lemmy.world 4 points 2 months ago

Agreed, network is and was my #1 suspicion. My paranoid mind immediately assumed they have some kind of advanced customer profiling that pings your phone to see where you are in the store and build a profile and attach it to your loyalty card if one exists. I recognize that Occam's Razor doesn't support this theory, at least not until I rule out a lot of other things.

I will add that it happened both near the pharmacy and in the complete opposite corner of the store. It still happened with WiFi and BT off, even after reboot, so that would leave mobile data (multiple generations), NFC, and wireless charging. I will have to toggle through all of these the next time I go shopping.