When images imported into unity gets jagged.
But the unity 2d pack sprites does not gets jagged:
Jagged Image VS 2D Pack Sprite
I do all tasks like:
1 - Disabling and Enabling Mip Maps
2 - Fit texture size for usage
3 - Change filter mode
4 - Set Compression to None
5 - Importing Images from Photoshop instead of illustrator
Details: Unity Version 5.5.0f Images Created in Adobe Illustrator CC 2017
I solved it.
You should import your textures and sprites in the size that you want for example:
If you need a 64 x 64 texture you should create and import your texture in 128 x 128 size.
By doing this the texture will become anti aliased and a little fade.
Thanks.