Altcoins based on mobile mining: Do they affect mobile performance ? Is there any research done on this ?
Yes, based on my own experience, I used to have a lot of mining applications that are similar to PI when I was active on mobile mining and I noticed a significant drop in battery life; it can even reduce the lifespan of a high-end cellphone.
And there are articles and studies that you can find online that can proved it but there are developers who claim that their cell mining application claims to be energy efficient but you have to prove that yourself. My advice is to never install more than 3 mobile mining applications, as it will shorten your cell's lifespan.
Mobile mining seems to be the only Pi I've seen listed on some of the top exchanges here in the crypto space. Though, 6 years have passed before it was listed on crypto exchanges. But it doesn't mean that it's really legit that can be said right away, so of course Dyor still needs to be done.
Now, the other mining apps on mobile, I haven't seen any that can really be considered legit because once you accumulate a let's say okay amount,
it seems like you will redeem what you accumulated via mining on their apps in which is when those apps are scammers.