Dreame, a Chinese manufacturer best known for its robot vacuums but with ambitions to do much more, says it’s making smartphones now. I’m not sure I believe it. The company showed off two phones at its own Next event, which took place in California this week, though both had previously been revealed in China in March. Neither phone has actually launched though — in China, the US, or elsewhere — and the company has revealed only a handful of specs about either. Aurora Nex LS1 is the more interesting of the two, but also the less plausible. It’s a modular smartphone with a magnetic attachment point where the rear camera would normally be.…