US carriers have largely replaced traditional two-year contracts with device payment plans (DPPs) that spread the phone's cost over 24–36 months — but the financial lock-in is effectively the same. Leaving early means paying off the remaining device balance in full, sometimes with additional fees. Understanding the difference between your service agreement and your device financing agreement is essential before signing.
What is a Early Termination?
Most major US carriers (AT&T, T-Mobile, Verizon) use a combination of a month-to-month service agreement and a separate device installment plan (DPP). The service agreement can typically be terminated with 30 days' notice, but if you leave, you must pay off the remaining device balance immediately. Some plans include trade-in promotions that provide bill credits over 24–36 months — leaving early means forfeiting future credits. Prepaid carriers (like Mint Mobile or Boost) operate differently — you pay upfront without device subsidies.
Red flags to watch for
If you cancel service, the full remaining device installment balance becomes payable immediately. On a $1,200 phone financed over 36 months, leaving at month 12 means owing $800 in one payment.
Trade-in promotions and device credits are often distributed as monthly bill credits over the full device term. Leaving early forfeits all future credits — and sometimes the carrier can demand repayment of credits already received.
Financed devices are typically carrier-locked, meaning you can't use them on another network until the device is fully paid off. This prevents you from switching carriers to take advantage of competitive offers.
Many plans advertise pricing that includes a $5–$10 autopay and paperless billing discount. If you pay by a different method, your actual bill is higher. This is sometimes not clear from the headline pricing.
Default international roaming charges in the US can be very high. Some plans include international data at reduced speeds; others charge per-day or per-MB at rates not disclosed on the summary plan page.
Your legal rights
US mobile phone service contracts are governed by state contract law, the FTC Act (prohibiting unfair or deceptive acts), and FCC regulations. There is no federal mandatory cooling-off period for mobile contracts, but the FTC's 'negative option' regulations require clear disclosure of recurring charges. The FCC's truth-in-billing rules require carriers to provide clear, accurate bills. Many states have consumer protection laws that apply to deceptive billing practices. The FCC's number portability rules mean you can take your number to any carrier — carriers cannot contractually prevent this, though you must pay off any outstanding device balance.
Questions to ask before you sign
- 1Is there a separate device payment plan, and what is the total device payoff amount if I cancel service?
- 2How are promotional credits structured — are they at risk if I leave before the term ends?
- 3How long is the device carrier-locked, and what is the unlock policy?
- 4What is the price after autopay discount removed, and what payment methods qualify?
- 5What are the international roaming rates for voice, text, and data in my most-visited countries?
Disclaimer: This guide is for educational purposes only and does not constitute legal advice. Contract law varies by jurisdiction and individual circumstances. Always consult a qualified legal professional before making decisions based on this information.