In a nutshell: To reactivate an expired Straight Talk phone plan, it's ideal to do so within 30 days to retain your original phone number. If you miss this window, reactivation may still be possible. To proceed, access the Straight Talk website, log into your account
If you were signed up for a Straight Talk phone plan but let the plan expire without renewing it, then you need to learn how to reactivate your phone if you want to continue using it. Fortunately, the reactivation process is pretty fast and easy.
To be sure of keeping your previous phone number, you need to reactivate your phone within 30 days of letting your service plan expire. After that period, Straight Talk might assign the number to another phone.Even if you are past the 30 day period, it is worth trying to reactivate it with a hope of getting your old number back, as Straight Talk may not have assigned it to a new phone yet.If your old phone number is no longer available, you will need to activate your phone as if it were a new phone. The procedure is essentially the same as the one described below, but you will also be required to select a new phone number. You will need to provide your phone's IMEI number or serial number, which you can find on the activation card you received with your Straight Talk phone.Your phone's IMEI can also be found under Settings. If you have an Android phone, select "About Phone" from the Settings menu and then "Status." If you have an iPhone, select "General" from the Settings menu and then "About."
Straight Talk home page
Straight Talk reactivation help page
The Straight Talk automated assistant will walk you through the reactivation process.
If you have any questions about reactivating your phone, call a Straight Talk customer service representative to get answers. The customer service center is open 24 hours a day, seven days a week.

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