According to Kuo, the LCP limits the Radio Frequency (RF) performance of the handsets due to technology limitations and production issues, CNET reported on Sunday. However, Kuo believes that the Cupertino, California-based company could still use LCP as the primary material for 5G antennas in 2020 iPhones. The production issues affecting the RF performance of LCP antennas are expected to be resolved, meanwhile, the report added. With its 2019 line-up, Apple is expected to introduce the much awaited USB-C cables for the devices and bring improvements in iPhone’s camera performance.