FREE Large Drink or Slush with Purchase at SONIC Drive-In (App/Online + Code Required)
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Enjoy a free Large Drink or Slush with any purchase online or using the SONIC Drive-In app! Simply apply the promo code given below to receive your free drink.
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How to get your free drink:
- Visit the company’s website by clicking “Get This Offer (External Website)”.
- Get the app from the Apple or Google Stores.
- Sign into the app or online, make any purchase and use the code TMOBILE when you checkout to receive a free large drink or slush!
* US only. Limit 1 offer per person/ account. Limited time offer. Ends May 1, 2022.