New 10DLC Non-Compliance Fees

Beginning January 1, 2024, T-Mobile is instituting three new fees for non-compliant traffic that result in a Severity-0 violation. A Sev-0, (Severity-0) represents the most harmful violation to consumers and is the highest level of escalation and applies across all products (SMS or MMS, Short Code, Toll-Free, and 10DLC) that transverse T-Mobile’s network.

The non-compliance fine(s) (USD) will be assessed for every Sev-0 violation issued as follows:

  • Tier 1: $2,000, for phishing attempts, smishing, and social engineering
    • Social Engineering refers to the practice of targeting individuals in a way that manipulates individuals to reveal private information like credit card numbers, or social security numbers.


  • Tier 2: $1,000, for illegal content (must be illegal in all 50 states and federally)
    • Illegal content includes, but is not limited to, Cannabis, Marijuana, CBD, Illegal, Prescriptions and Solicitation.


  • Tier 3: $500, for all other violations including, but not limited to, S.H.A.F.T.
    • S.H.A.F.T.= Sex, Hate, Alcohol, Firearms, Tobacco (including cannabis).
    • Please review the T-Mobile Code of Conduct Section 5.2 for a list of all disallowed contact.


How to Avoid Non-Compliance Fees and Suspensions

Ensure that all traffic leaving your network is wanted and compliant by following these best practices:


  • Register any numbers that will send SMS/MMS messages with 10DLC.
  • Register toll-free numbers using the verification form.
  • Make sure users explicitly say they want messages from you. Have a clear opt-in process.
  • Provide opt-out functionality within the text message (ex- reply STOP to unsubscribe).
  • Identify your brand in your messages (ex- [Your Business Name]: You have an appointment for Tuesday @ 3pm.  Reply YES to confirm or NO to reschedule.  Reply STOP to unsubscribe).
  • Do not use publicly available URL shorteners (ex-,,, etc.).  It is recommended to build custom URL shorteners that relate to your company name.
  • Click here for a complete list of 10DLC best practices.


ACC Telecom is a telecommunications provider headquartered in Columbia, Maryland and serves businesses nationwide.  ACC specializes in business cloud phone systems with integrated SMS/MMS messaging, mobile apps, video conferencing, and more. Contact ACC Telecom with 10DLC SMS compliancy questions or concerns, or visit their FAQs page.

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