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◎위챗 : speedseoul
http://www.linuxforu.com/2009/01/my-own-phone-dialler-only-on-android/
https://code.google.com/p/ics-custom-contacts/source/browse/src/com/android/contacts/dialpad/?r=edfb4642860ae05228633a6910b5b50bbb081767