Dust on lens ?

[Bobeobi]

Hi, guys. Here is the problem, first it was barely seen single spot (I thought it was dust), but soon it became more vivid and another one appeared on the same line. They don't move, is it dust or what is that?

[MarlonUk1]

if you run Xperia diagnostics or boot on safe mode: does it show?

try restarting your device and clean with microfibre cloth. if your phone is water resistant try with a little bit of water

if still persistent send your device to your local service center Local support