High Court Rules Mobile Phone Numbers Are Personal Data Protected by the Constitution

The High Court has made an important decision that strengthens the privacy rights of Kenyans in the digital age. 

In a ruling delivered on Thursday, March 19, Justice Lawrence Mugambi declared that registered mobile phone numbers are personal data protected under the Constitution. 

He stated that such numbers cannot be switched off or given to another person without the clear consent of the owner.

In his judgment, Justice Mugambi explained that mobile phone numbers are more than just tools for communication.

He described them as digital identifiers that are closely tied to an individual’s private life.

According to the court, a phone number can connect to a person’s financial records, social interactions, and even sensitive personal details, making it an important part of their identity.

The judge based his decision on Article 31 (c) and (d) of the Constitution, which protect every person’s right to privacy.

These provisions ensure that individuals should not have their private information revealed or interfered with unnecessarily.

By linking mobile phone numbers to these protections, the court made it clear that telecom companies and other service providers must treat such data with great care.

Justice Mugambi pointed out that in today’s digital world, a mobile number is often used to access essential services.

From mobile banking and online accounts to social media and official communications, the number acts as a key that unlocks many aspects of a person’s daily life.

Because of this, losing control of a phone number can expose someone to serious risks, including financial loss or identity misuse.

The court also addressed the issue of arbitrary deactivation and reassignment of phone numbers.

It ruled that service providers cannot simply disconnect a user or reassign their number to someone else without following proper procedures and obtaining consent.

Doing so, the judge noted, could interfere with a person’s privacy and disrupt their personal and professional life.

This decision is expected to have a significant impact on how telecommunications companies operate in Kenya.

They will now be required to review their policies to ensure they comply with constitutional standards on data protection.

The ruling also sends a strong message that personal data, even something as common as a phone number, must be handled responsibly.

Legal experts have welcomed the judgment, saying it reflects the realities of a fast-changing digital environment.

They argue that as technology becomes more central to everyday life, the law must evolve to protect individuals from potential abuse.