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A. Background: 1280 x 1920 pixels
- Ideally, we highly recommend you design your Background image as a plain image (which doesn't have text or logo on it). Because the logo will be attached to this background, any pre-designed logo on the background will cause the output to look improperly.
B. Logo: 960 x 260 pixels
- Background of the image should be transparent so when it's attached to the background, it will look more properly.
The logo should include the app icon and app name. Here is an example of the logo of phpFox mobile app. 
Please note that this example phpFox logo has the transparent background and the app name is in white color so you can click on it to check.
Format: Both are in PNG
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Here is the sample of Splash image for phpFox app
Depends on each mobile OS and device's screen sizes, we will require several different images with different sizes.
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