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Sam's phone plan no longer covered enough data for his new job, so he visited the carrier's store to —upgradeunsubscribeunpackunplug to a bigger package. The sales rep compared three plans and pointed out which one offered the best —valuevalleyvalidvault for unlimited streaming. Sam also asked whether upgrading would affect his current phone's —warrantywarningwarehousewardrobe period, since he didn't want to lose his warranty. After signing the new contract, he received a text confirming the change would take —effecteffortaffectoffer at the start of his next billing cycle.