iPhone Limits using Unity​

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Unity Documentation on Hardware

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Max Texture Size



• Iphone 3 1024x1024

• Iphone 3GS/4+ 2048x2048

• iPad 2 / 3 / 4 / Mini / iPhone 4S / 5 / iPod 5 : 4096x4096

Size of IPhone UI

 

• IPhone 4S and Earlier (320x by 480y) or (640x by 960y)Retina (R)

• IPhone 5 (320x by 568y) or (640x by 1136y) (R)

• Splash Image use (R) - (640x By 960y) or (640x By 1136y)

• iPad 1 & 2 (1024 x 768 pixels)

• iPad 3 retina (2048 x 1536 pixels at 264 ppi)

I find its best to build for IPhone 4S or IPad 2 and earlier

Use 25-30 or less Drawcalls



In 2D/iOS Games a​void GUI.Buttons



• Do Not use GUI.xxx, It is heavy.

• Use GUITexture in Game.

• Use Transforms as Buttons

2D Texture Optimization

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• Save as PNG,

• Use PNG Optimizer 

• (http://psydk.org/PngOptimizer.php)

1. Cleans your PNG files of useless or wrong information.

2. Reduces your PNG files weight.

3. Converts into PNG other lossless image formats (BMP, GIF, TGA).

4. Supports animated PNG (APNG).

5. Creates easily available PNG screenshots.

6. Offers a simple and productive user interface.

** Inside of Unity Textures should always be a power of 2. **