https://www.reuters.com/article/us-nxp-semicondtrs-m-a-qualcomm/qualcomm-investors-cheer-end-of-nxp-deal-doomed-by-china-u-s-tensions-idUSKBN1KF193 >Qualcomm Inc , the world's biggest maker of chips for mobile phones, said on Wednesday it would drop its $44 billion bid for NXP Semiconductors after failing to secure regulatory approval from China against a backdrop of widening trade tensions.