The $349 Xiaomi Mi A1 operates on the Snapdragon 625 processor and has a dual-lens camera. Most other smartphones which run on the same chip, like the Oppo R9s or the dual-lens Asus ZenFone Zoom S, cost well over $600.
We have been experiencing some problems with subscriber log-ins and apologise for the inconvenience caused. Until we resolve the issues, subscribers need not log in to access ST Digital articles. But a log-in is still required for our PDFs.