I saw a tiny white dot on my screen, at the top left. Why is this happening? Is it a dead pixel? It doesn't appear anymore but if it ever appears again, how can I fix it? Thank you :)
Open a plain black image in full screen, if it shows a white dot, then that's a dead pixel.
Read more or click anywhere on this bar to close it.
Are you on the best mobile phone tariff? Use our free comparison calculator to find out.