How does the Next Up feature aim to influence customer behavior?

The Next Up feature aims to influence customer behavior primarily by offering early upgrades. This approach encourages customers to remain engaged with the service, as it provides them with the opportunity to access the latest devices sooner than they might regularly be able to. By making it more appealing to upgrade devices early, customers may be more likely to continue their subscription and remain loyal to the brand. This strategy not only enhances customer satisfaction by giving them access to the most current technology but also incentivizes them to spend more in the long run, ultimately benefiting the service provider as well.

The other options, such as increasing monthly fees, limiting device access, or requiring long-term contracts, do not support the goal of fostering customer loyalty and satisfaction in the same way that offering early upgrades does.