Recently I’ve made a few posts about how to support different cultures and accents when using the Windows Phone 7 Long List Selector from the Windows Phone Toolkit. So rather than try and explain each bit I decided to finally publish the code showing how the MSDN sample can be altered to support both accented groupings and cultures;

https://wp7llssample.codeplex.com/

The sample is provided as-is, the code is mostly from MSDN with a few tweaks. You should not accept this as production ready code, please carry out your own tests.

Accented grouping

Japanese grouping

Japanese Jump List