One of the company's specialties is combining network modes, and with its new Coolpad 8920, it's one of the first phone makers to build devices with TD-LTE and FD-LTE, needed for Sprint's new tri-band LTE solution. Coolpad's single U.S. customer so far, MetroPCS, has also just pivoted. Since it was bought by T-Mobile, the carrier has tossed out its CDMA phone roadmap and is auditioning new GSM/LTE devices to run on T-Mobile's HSPA+ and LTE networks under the MetroPCS brand.