The invention discloses a dual-
system smartphone and a
mobile phone outer sleeve with a communication function, and relates to the technical field of mobile communication of mobile terminals and
information security, in particular to the field of individual privacy
data security of smartphones. The dual-
system smartphone comprises a first
system and a second system, the first system is used for
processing privacy affairs, a user cannot install
third party application programs, the second system is used for
processing general affairs, and the user can install
third party application programs. An SIM card is mounted on the first system, and the first system provides
network connection services for the second system. Based on an identical idea, the
mobile phone outer sleeve with the communication function is provided with an SIM card slot and other
mobile phone hardware and has WiFi hot pot functions, and the mobile phone outer sleeve with the communication function serves as the first system and provides the
network connection services to the mobile phone serving as the second system. According to the dual-system smartphone and the mobile phone outer sleeve with the communication function,
user privacy data can be protected effectively and easily.