Dar es Salaam, Aug. 12 -- WE wash our hands, sanitise shopping trolleys and wipe down cafe tables.

But what about our phones? We touch these devices dozens of times a day, and take them everywhere from the kitchen to the dining table, and even the bathroom.

Phones can be contaminated with many kinds of potential germs.

When was the last time you wiped down yours – and with what? If you use the wrong cleaning agents or tools, you could strip your phones protective coatings, degrade waterproof seals, or even affect its touch sensitivity.

Do phones really need cleaning? Touchscreens get covered in fingerprints and smudges, so there are aesthetic and functional reasons to wipe down your screen. Another reason comes down to potential...