The home screen was a sea of apps he couldn’t read, and the familiar face of the was nowhere to be found. Every notification was a battle with a "System Manager" that spoke a language he was only halfway through learning on Duolingo. It was fast, sure, but it felt like living in a house where all the light switches were hidden behind secret panels.
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Instead of risking a full conversion, the recommended solution is to and install Google services manually: The home screen was a sea of apps