Which is preferred oldest browser and shortest Screen Size of mobile to test website and which has Facility to surf Internet and still in use? [closed]

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Which is oldest browser and shortest Screen Size of mobile which has Facility to surf Intern开发者_Go百科et and still in use?

I'm making a Mobile site for Older devices (Not for Smartphones), which are still in use.

I'm testing on Nokia 5130 Xpress Music mobile which has size of 240 x 320 pixels and Browser is Opera Mini (Version I don't know).

Is it enough to test on this, these days or I should test on lower size than this and less capable browser than this?

Any suggestion?

Edit: Like in desktop we don't consider screen size lower than 1024 X 768 px and We have started to not to consider IE6, Firefox 2 and 3.0 etc.

So is there any criteria like this for Screen and Browser for Mobile phones?

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Take a look at what devices are used for surf Internet (sorry for Russian, that site doesn't seem to have English UI - but it's pretty self-explanatory) - you'll probably be amazed how many people still use "feature phones" with fairly small screens and Opera Mini (Java ME-based) to surf. While touch-based smartphones (such as iPhone) slowly grow, more than 50-60% of total mobile users still use fairly small screens and simple devices.

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There are really a bunch of crap mobile phones that come accompanied with crap browsers as well.

Its smarter to test for the better mobile browsers instead for the worst or oldest in use. Make em look great on the iPhone and Android. Min res of 320x480 ( anything below this is just not worth the trouble.)

And for the rest -they will gracefully (more or less) degrade.

For features on the most important mobile browsers you can use http://caniuse.com/ or http://www.quirksmode.org/mobile/