Be in Shenzhen 5 years, in Shenzhen China strong north 5 years, most propbably I am very qualified answer this question. Does Shenzhen assemble a mobile phone how? What should understanding above all is to assemble a mobile phone.
Assemble a mobile phone to have east go all out beat on the west come out (for instance this mobile phone advocate board bad, additionally one advocate board good but fittings is completely bad, it is two bad mobile phones originally, result exchange advocate board became one good one bad, good then the stage makes assemble machine) .
Assemble a mobile phone to also have from 0 begin to assemble, for instance I am here buy a screen, in Y here buys advocate board, in Z here buys a batteries to go to other place buying some this other fittings again neat, go all out rising also is a mobile phone, this also makes assemble machine.
As to quality you assemble how complete be decided by the part that moment uses is former plant part, if be former plant part, it is again a bit better to assemble handiwork quality is actually then good still, after all also artificial outfit comes out the mobile phone in the factory, we why not OK? Quality stand or fall basically is to see fittings most. But the cost that assembles a mobile phone so is particularly high, with former outfit opportunity cost place is differred very few, it is former outfit spare parts after all, the person that just holds is different.
But if you are bought fittings is copy, brummagem, perhaps had maintained advocate board of what, that simply cost is low want to be less than to you, you want much cheaper fittings to be able to say to have here, 1 1000 come piece IPhone7, more mountain fastness the still has 100 thousand IPhoneX of a bit, this kind assembled the quality of machine to need not say more. A minute of money a minute of goods, recapture goes exploding consider your life big (a bit exaggerative)
Offer a piece of advice finally the friend that everybody prepares to buy a mobile phone, the old driver that I am group of aircraft of one a famous player, the water deep water of mobile phone industry is shallow I am very clear, it is blood and tear, money + the experience that sweat changes. A minute of money a minute of goods, thinking be economical to buy ace machine, be impossible! You want to buy IPhoneX, you had be toed spend 7 more than 1000, if you 6 more than 1000 bought IPhone X, that quality affirmation is different. You want to be in this place be economical, then it is in certainly seek fund to you elsewhere. My it is the experience that my blood and tear change truly really.