Reviews can be anything to do with advice, its not that big of a deal if the phone has a few scratches here and there.
Do game reviews, rom reviews. Literally any review to do with tech. Do tests, watch other reviewers to get a similar idea.
I myself tend to watch reviews all the time, weather it be a TV or a phone. It gets my attention.
Hope you get far with this, and also if youre having financial issues, don't worry too much about that. Grab your camera and do what you can do.
If you do become very successful with this, companies will contact you. Ship you a new device and they'll get you to review it.
That's how most of the reviewers get viewers.
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