Even on the Android or iOS phone the EU app won't run if the device owner made even a tiniest change of the operating system without Google or Apple approval.

Even on the Android or iOS phone the EU app won't run if the device owner made even a tiniest change of the operating system without Google or Apple approval. The EU developed system excludes the 1% of people for which the popular mobile solutions do not work and also make the rest 99% totally dependent on the selected corporations.