What is the 8848 mobile phone system and why is it so expensive?

Android system. The 8848 mobile phone is deeply customized according to the titanium OS 1.0 of Android 6.0, and has original dual-system functions. Both systems have a complete operating experience, which can be switched with one button, with independent contacts, short messages, call records and emails, independent cameras, galleries and file storage, and independent installation of WeChat, banking, stock and other applications, which is equivalent to two mobile phones. Moreover, this mobile phone belongs to a high-end machine, which is privately customized, so the price will be very expensive.