A huge study suggests the Apple Watch can sometimes detect a worrisome irregular heartbeat – but experts say more work is needed to tell if using wearable technology to screen for heart problems really helps.

Eskom quicky escalated its rotational blackouts from stage two to stage four on Saturday, despite demand over weekends typically being lower than on weekdays when industry is consuming more electricity.

Dimension Data senior managers are approaching lenders and investors to raise cash for a possible deal for the group’s Africa and Middle East operations, which could be valued at about $800-million.

African Rainbow Capital has attached an intrinsic value to telecommunications upstart Rain of R11.7-billion, or almost a third of Telkom’s market capitalisation.

Standard Bank Group expects to close 91 branches across South Africa, most by the end of June, in a move that may affect about 1 200 employees.

Parliament’s portfolio committee on communications has adopted a final report that recommends eight candidates to fill the SABC board.