Foxconn actually does quite a lot of design work, so even the "designed in California" bit may not be entirely true. It should also be said just how much it suits the interests of these companies to keep a low profile. The fact that Huawei is a major supplier for the PLA, for example, will not register with consumers at the moment as they don't know who Huawei are, but if Huawei were to become a famous brand western consumers would be quick to punish them for this.