Graphene OS 預先安裝了瀏覽器 Vanadium，瀏覽器使用 duckduckgo 作為預設搜尋引擎。由於 duckduckgo 不是自由交易的，因為他們在搜尋結果中顯示廣告，所以我只給 4 個區塊。

I didn’t test Graphene OS, but from what they write it seems a trade-free operating system for phones. “GrapheneOS improves the privacy and security of the OS from the bottom up. It has a hardened kernel, libc, malloc and compiler toolchain with many low-level improvements. These changes are designed to eliminate whole classes of serious vulnerabilities or provide meaningful barriers to exploitation. We avoid making changes without a clear rationale and we regularly work towards simplifying and replacing these low-level improvements.” (https://grapheneos.org/) to me they seem to completely get rid of google and provide an operating system that does not want to exploit its users for the sake of trade. The website does not have trackers and ads neither. Because of that I give them 5/5. Of course I could be wrong, so if you find any trades, let us all know here.