new phone cant get sim1 of 2 to register, proved sim is good,

hi new phone from china ... top left corner on starting flash's white triangle and some times 1 or 2 white sim cards ... on settling down only card in sim 2 shows a signal and id ... insde in menu sim cards sim 1 shows no sim . ... have put piece of card over sim still no good ... have tryed network reset and factory resets any help please????