You can't (re)activate a device by redeeming points. When redeeming points for a time plan, the Rewards system asks for a phone number to apply the plan to. But if the device is inactive, it has no phone number.
Service ends at midnight of the service end date. If the service end date is 11/10/2022, the phone quits working after 11:59pm 11/10/2022.
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