I have a Nokia Lumia 520 and really want to use Chrome. There seem to be a few knock-off versions of Chrome on the Windows Store.
Is there an official version?
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I would suggest other browsers like Opera Mini and UC Browser, Maxthon or Surfy. They are some nice ones and one or the other will suit in some way. Give it a try.
Also, I found this article where the details have been written about other browsers: Best Browsers for Windows Phone.