That build text is called device fingerprint, e.g. you get it from Terminal app bySame here!
When i read the Google help Page for this, i think they also now check the build Text. And in the build text for me is the following
QQ3A.200805.001
PixelExperience_polaris-10.0-20201122-0400-OFFICIAL
And this is the sign for Google that i dont use official Software. But it is only a thought.
I cant understand, Why it is a problem for google when we have a rooted Phone.
getprop ro.build.fingerprint
You can also read them (there are more similar props), by use of e.g. SesEdit app from Playstore
In order to get GPay working, your Device must show as certified in Playstore, and in order for that device must pass SafetyNet test
Mathematically speaking, these are NECESSARY condintions, but maybe NOT SUFFICIENT
That is, if you don't pass A then 100% B will also fail. But if you do pass A, there is still a (small) chance to fail B, but bcs of other reasons
You can use Magisk Hide Props Config to fake the device fingerprint and/or device product model to trick the Google to pass the SafetyNet
Edxposed etc, might be just one of those other reasons to fail the Basic Integrity (part of the SafetyNet test)
Those tests and restrictions are not only Google's wish. E.g., banks don't want their users to use the rooted phones (discuss with them how and why) and they require some mechanism to attest if the phones are running the original software that was certified by the phone vendors or if somebody tweaked the phone by potentially security risky changes
They don't have mechanism and it would be too complicated, practically impossible to prove that your changes did not introduce security risks - the other way would be for you to go alone to Google and pay for the time and material to let them attest and certify your root changes against all standards, security, etc - then you would show to your bank your attest certificate and your bank would say ok
Think similarly about passing the technical exam for your car if you replaced the original and certified engine, suspension, etc
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