This article comes from a university. More often then not these sources of information are factual. I cannot personally claim that what they are saying is based on facts, but taking their word for the disclosed information is, but I can say that it is worth serious consideration.
I have found something interesting with smart phones. Having the latest and greatest does not seem to justify the costs. And in Germany the contracts are very hard core. So, being able to buy a phone that covers the basics like texting, and watching youtube is enough for me. I personally do not need a "mega camera system". So I can say that a phone like this would be perfect. I hope this helps you.
I honestly did not expect this to work well, but, I was wrong, it works well. For starting out small plant projects, its seems okay.