You should try electroneum mining which does not actually use computing power but still gives you electroneum coins. They are very reliable. I have had a couple of payouts and also sold them. The app is developed by the electroneum team so no doubt at all. If you want a cloud mining website, I am not very sure but possibly Genesis mining and 24 Hashing can be good ones I guess, although I am just 60% sure of their legitimacy. But electroneum is surely a good one and also runs on a normal mobile.