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Ask Jerry: Can you use an Android phone without Google?
Let's talk about tech.
I like to give a concise answer at the beginning of an article for people who want quick info, so as mentioned above no you do not have to sign into a Google account to use an Android phone. Chrome, for example, will browse the web just fine but you won't have any syncing tools for access to saved bookmarks or across devices. Without access, you can't locate — or more importantly — lock and erase — a lost or stolen phone.
Or read this on Android Central