The invention discloses a single-
chip, multi-card and multi-standby
mobile phone. The
mobile phone comprises a
baseband processing chip and a plurality of card slots for installing a user identification module. A plurality of user identification controllers which are same with the card slots in number are integrated in the
baseband processing chip; each user identification controller is connected to one card slot and the constant connection is kept; and one
baseband processing controller integrated by the base band processing chip is only connected to one user identification controller at same time. The user identification module comprises an SIM (
Subscriber Identity Module) card, a UIM (User Identify Module) card and a USIM (
Universal Subscriber Identity Module) card; correspondingly the user identification controllers are an SIM controller, a UIM controller and a USIM controller. The
mobile phone has the characteristics of high integration, small size and high reliability during change of multiple cards, and has the advantages of small interference and
low noise. The invention further discloses a method for solving conflict of the single-chip, multi-card and multi-solution during reading-writing multiple cards and receiving service. The method has the characteristic of high efficiency and
fast speed; and by adopting the method, unnecessary
cell reselection operation can be avoided, and
power consumption can be reduced.