In the era of mobile internet

all kinds of application appear

and the user’s choice becomes much rich.Increasing application

however

does not improve user customer perception

in contrast to the enormous workload of the service.Based on the IMEI terminal brand satisfaction

the research includes extracting the user call records mainly from all kinds of data interfaces

Internet access

and the IMEI of extracting user terminal

through changing the IMEI to predict user replacement time

user behavior and preferences

and handle customer complaint. Based on these

algorithms

models and approaches are established to output reports as the core of terminal loyalty

which can be deployed to support the market.