Looks like today i saw a green line right next to my front camera through the screen. How ever when i tried to screenshot it, it was not covered. And after pressing one and off for 2 times, it went off. Am i seeing things or is that a green line issu...

Mine is a 8 gb ram 256 gb variant. However the available ram is always less than 3.5 gb. And the phone is lagging.How to resolve this

Any idea when will samusng release the security patch for s21 fe 5g snapdragon variant for the month of august 2024