Here are great best and modern ringtones for the Galaxy S4, HTC One, Xperia Z or any android phone.
Use Rocketplayer android music player app to easily set these as default ringtones.
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How to Add Ringtones to an Android Phone
Adding ringtones to an Android phone can be tricky. If you drag and drop a ringtone file to your device, it will end up in with your music collection. However, with one simple trick, it can be a breeze