Sony Ericsson K510i Black Sim Free Unlocked The Sony Ericsson K510i GSM Phone Black is a stylish, compact and simple phone with great set of features like a 1.3 MP camera, great media player, GPRS connectivity with NetFront browser and more. The Sony Ericsson K510 also boasts of good instant messaging capability besides its Picture Editing features. It is an inexpensive phone loaded with great features.