If it were regarding iOS or Android, the answer would be simple. But what about phones in general?
The question in question is about whether one should remove a phone's battery when not in use.
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There was a proposal to have a site for Electronic Gadgets, but it failed. There is not a site where the question is very much on-topic. You might have luck from a Skeptics point-of-view, but that would require some source stating it is good or bad and you want to know if it is right or not:
it is for researching the evidence behind claims you encounter. It is not for speculation, philosophical discussions or investigating original claims
This question has already been asked at Skeptics, so that'd be a site for it.
It is unlikely that that question would be well-received on any site at the current point in time. That 2011 Skeptics question was in the first few Google results, it only took a few seconds to find (plus all the other info that exists about that topic), and some amount of research effort is generally expected.
In general, btw, searching for what you're looking for is often quicker than the process of forming a new question about it, for example comparing the above Google search with the process of asking on SU and having it deleted, then asking where to ask here on MSE, then waiting for results, then asking on a different site, then waiting for results again (and most of those results would likely be as equally credible as Google results anyways, or based on the answerer doing that same research while writing).