MS SB2144

Requires all smartphones manufactured and sold in Mississippi on or after July 1, 2016, to include a technological "kill switch" that can render essential features (voice, text, internet access) inoperable to unauthorized users.

The kill switch must be reversible by authorized users, survive factory resets and operating system downgrades, and prevent reactivation on wireless networks without authorization; users can opt out but only through actions performed by the authorized user or their designee.

Retailers knowingly selling non-compliant smartphones face civil penalties of $500 to $2,500 per phone, enforceable only by the Attorney General or district attorneys, with no private right of action; sellers are shielded from liability for technological solution failures unless notified of unremediable vulnerabilities.

Prohibits government entities and communications service providers from interrupting communications service without a court order signed by a judicial officer, except in extreme emergencies involving immediate danger of death or great bodily injury, in which case an application for a court order must be filed within 6-24 hours.

Preempts local regulation of smartphone kill switches and communications service interruptions, declaring these matters of statewide concern; exempts emergency 911 services, wireless emergency alerts, and hostage/barricade situations from restrictions.