All scams. A CPU Is a CPU. There's nothing a phone CPU can do that a PC CPU can't do better. "Phone only mining" is a pure lie.
Not all of them. Magi has a unique PoW algorithm (M7M) where it punishes big miners, instead of the "little guy". The higher the hashrate, the lower the block reward will be. This makes it easier for anyone to mine XMG on mobile devices. The only downside is that the number of exchanges are low (as well as market price).
It's this reason why we shouldn't expect to make profit mining on the go. It would only be for fun. Maybe someday developers will make a similar cryptocurrency that will gather the attention of mainstream traders and investors alike?
I’ve tried mining it last week when it came out. It was profitable for a few days, especially if you had some CPUs laying around or some AWS credits.
Later they increased the difficulty and made it very unprofitable. Then they increased it 32x and all of a sudden shut down mining altogether because it was congesting the network too much and they needed to rewrite the code from scratch.
So now you can’t mine it anymore.
Later they increased the difficulty and made it very unprofitable. Then they increased it 32x and all of a sudden shut down mining altogether because it was congesting the network too much and they needed to rewrite the code from scratch.
So now you can’t mine it anymore.
That sucks. At least, the idea of mobile mining is there. Making it a success, is another story. If implemented right, we could have a new wave of cryptocurrencies that are much more decentralized than BTC itself. After all, there are more mobile devices in the world than PCs (if I'm not mistaken). Anyone with a phone or tablet can support the Blockchain via mobile-friendly PoW mining. Electroneum wanted to do something like this but it failed. Who knows what would be of ORE in the future?