HTC 619d User Agents in our database. This is a listing of only some of the most popular ones.
Mozilla/5.0 (Linux; U; Android 4.2.2; zh-CN; HTC 619d Build/JDQ39) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/40.0.2214.89 Quark/2.0.4.956 Mobile Safari/537.36
Quark 2 on Android 4 (HTC 619d)
