MTN Ghana blocked 4.8 million subscribers who failed to re-register their SIMs with the Ghana card.
The move is in compliance with the directive from the National Communications Authority.
According to the telecom giant, its subscriber base decreased by 6.3% to 26.8 million at the end of 2023.
MTN Ghana blocked 5.4 million SIMs that were not registered with the Ghana card as of May 31, 2023.
Six hundred thousand SIMs of the blocked cohort were however re-registered.
The NCA through the telecom operators in October 2021 embarked on a nationwide re-registration of all SIM cards using the Ghana National ID card.
The exercise was completed at the end of May 2023.