This research was conducted to find out what opportunities exist for consumers of GSM cellular card brands to switch to other cellular card brands. In addition, this research allows us to predict how the number of GSM prepaid mobile card users will develop in the future. The data used in this research is primary data collected by distributing questionnaires to mathematics course students at Jambi University. A total of 32 people responded to the survey. Based on the results of Markov chain analysis, it is known that Telkomsel brand GSM card users constitute the majority of mathematics course students. However, looking at developments, the opportunity for growth for the tri-card brand is getting bigger. On the other hand, the Telkomsel brand has almost the same opportunities for increase and decrease, so the opportunities for increases and decreases in the Telkomsel brand are unstable. For the Axis, XL, By.U, and IM3 brands, the probability of switching continues to decrease, but for the Axis card brand, the survey found that the number of users and the number of users are almost the same. Therefore, XL, By.U and IM3 cards are still unable to compete in the market for Mathematics undergraduate students at Jambi University.
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