Thomas Ibingira, a mobile app developer, was chatting using his WhatsApp and all of a sudden he saw blue ticks on one of his messages as opposed to the grey tick that we are all used to.
"It started with only one of my texts and I thought it was for only the person you chat with the most. It puzzled me and a couple of friends for the whole night until it went general the following day with many others in my chat list," he said.
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