Hi, thanks for putting up this ANN. Minephone website states If during the 3 years of the mining contract the ETH difficulty increases so as to considerably reduce the original monthly profit, it will be possible to extract an alternative cryptocurrency.
well, if particular hardware is good for dagger-hashimoto it is not necessary good for anything else. Alternative crypo might be limited to this algo.
Alternate crypto has been tested, you can mine alternative cryptocurrency when the Ethereum mining difficulty is more. The Minephone has been built for the purpose of Mining.