White dot (not a dead pixel) showing in the top left corner of the home and control center screen

@SravanKrA - I discovered this bug on my phone and I don't have any link to any Telstra resource about this, sorry. Telstra needs to update their carrier settings or whatever else they need to do so that the correct network name is displayed on our phones. I wonder if Android phone users see the same behavior.

Solved: the dot is the network name. Telstra, the network operator i use here in Australia must have made an update to their network and renamed by mistake their network identifier with a single full stop/period instead of a full name:

The Lock Screen wallpaper is the stock one from Apple. Not something downloaded from the Internet. And it was the same wallpaper I used for the past 6 months.