What minimum FPS I should keep in Windows Phone 7 XNA application?

I know that maximum of 30 fps is perfect but what are reasonable minimum values?

Assume that there开发者_StackOverflow社区 is constant movement, so lag needs to be almost unnoticed.

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The frame rate is capped at 30 for Windows Phone 7 XNA applications, by default. I would suggest that around 20-25FPS would be acceptable, but ideally, the higher the better. It depends on how intensive your application is as to how much the FPS is affected.

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I've done J2ME games on crappy phones in the past. We were aiming for 8-12 FPS for high quality 2D games.

It didn't feel very responsive though at 8 fps. 15 fps should give you a playable game.

Of course, for this to be true, you must implement all your logic as functions of the elapsed time, not with hardcoded rates...

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The answer to this question can only ever be specific to a specific application.

You'll need to test on actual devices (recommend the Surround or Trophy as these have the least RAM & ROM) and then set it as high as you can without affecting performance/usability.

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Ok... let's define this...

'cartoon animation' = '3d animation' (imho)..

Now let's talk about cartoons:

1. Some Japan animators make cartoons with 8 fps.. and those cartoons look pretty good... look at "school rumble" School Rumble

2. There is a cases where 200 fps is not enough. For example, two characters slowly moving into each other and kissing... remember this.. slower action = more FPS you have to provide, to make it look realistic

3. Some proffesional animators can handle 'variable' FPS.. drawing 1FPS for statick scence, and 12-24 FPS for dynamic scence.

PS : There is a lot of other tricks.. i recomend you to read some books about 2D animation..

http://en.wikipedia.org/wiki/Limited_animation#Techniques

So the answer is

6-8 fps is enouth, but you really have to use a lot of 'tricks' to make it look smooth...