The name reminds me of the Eurotrash 'flip4new'. When I got rid of the phone slavery contract (Extremely common in Europe: 24/36+ months forced contract periods, for a stupid phone you ultimately pay more for, than if you'd just buy it outright.), and switched to prepaid Android/LOS 5+ years ago, I tried. They ask you if the device is SIM-locked, scratched etc. and gave me a 'preview' of 90 abusetokens (which is already a joke for a perfectly functioning 1000 EUR device without scratches).
You go out of your way to find a physical post office, pay the insane bus ticket cost, send it to them.
A while later you get an e-mail with always the same exact story stating 'their technicians have evaluated the device and are willing to pay you 5 bucks for it'. Seriously. I demanded they return the thing to me and sold it on ebay for a more typical price. Which is terrible in itself, as ebay has absolutely insane fees. But better than getting less than a kebab for the thing. Bus fare to the city and back is almost 10 abusetokens, a kebab is 7-8 now (was at least 4-5 or even 3 then though, pre-UA/COVID), offering 5 is an insult.
You can test the entire hardware yourself too - there was an open source app which lets you look at all the sensors. I forgot the name, but you can probably find it. For testing, you'd want to give it all permissions it can get, so might be worth the effort of avoiding a store app, before they leech everything. Or at least re-flash before you install it. But Android has infinite ways of abuse, and I sure as heck don't know how to 'fix' them all. So I just avoid it altogether.
Correlations are the new oil, and everything that can be collected, will be collected.
