HTC has unveiled two LTE smartphones for the Taiwanese market. The HTC One will be offered at TWD 19,900 while the Butterfly S is priced at TWD 20,900, The Digitimes writes. Operators are expected to launch 4G services in Taiwan in the second half of this year. The company will offer a number of 4G models in cooperation with the operators and HTC expects 4G smartphones to account for at least 50 percent of handsets procured by operators this year.