first contact Nokia, then explain to them what 'kd player' is
No,nokia 7210 supernova doesn't support WIFI.
Yes. it cost 200php(Philippines) and can be found in any original cellphone stores.
Yes it is compatible. Follow below procedures. Go to Settings. Go to Configuration. Go to Personal Configuration Settings. Now, press Add New (visible if you do not have a previous Personal Setting...
You can store uptill 20mb msgs in nokia 7210 supernova