1. Regulatory focus
Mexico is not merely asking carriers to refresh customer records. The current model links each mobile line to a verified identity: CURP for individuals and RFC for business entities. Public reporting indicates the measure has applied since January 9, 2026, with existing lines required to complete registration by June 30, 2026. If a line is not registered, the subscriber may keep the number but lose service access, including voice and data. For newly sold SIMs, the sequence also changes: registration comes before normal activation. That makes identity validation part of the provisioning path, not a later compliance clean-up.
2. Business impact
For businesses, the issue is broader than carrier-side suspension. The regulation effectively redefines the line lifecycle. If users fail registration, OTP delivery, 2FA completion, billing reminders, support callbacks, and fraud controls can all degrade even when routing quality is normal. The symptoms may look like lower delivery rates or higher verification failure, but the root cause can be identity status on the line. This is especially relevant for travel eSIM, remote onboarding, fintech, and shared-device use cases, where the subscriber, purchaser, and actual user may not be the same person and where bulk corporate line allocation can create documentation gaps.
3. Operating recommendations
Operationally, this should be treated as a line-governance project, not a one-off customer communication campaign. Add registration-status logic to onboarding, account recovery, number change, login protection, and callback flows. Track whether the line is registered, whether it is held by an individual or business entity, and whether it is a newly issued prepaid line. Review failed OTP traffic, undelivered numbers, and inactive users separately from routing issues. If you sell or bundle SIM or eSIM products, align KYC collection, retention evidence, RFC capture for business customers, appeal handling, and fallback verification methods now so that post-deadline failures are not misread as messaging vendor instability.