I had a Sony Ericsson phone w610i which was stolen and it came with two speakers when I bought it. Now speakers are of no use without that phone.
I wanted to use them with my laptop or any phone using USB supply and 3.5mm audio jack.
I searched for a Sony Ericsson pin diagram and found a link from "Suhashtech". I found the pin diagram, I had one old damaged card reader and an old damaged headphone. That's all thing I need!
I used card reader for USB power supply form laptop (we can use any mobile charger, too), soldered headphone's mic wires to the card reader on one side, and at another side connected it with my Sony Ericsson speaker's power supply. Thus the power supply part is done!
Now for the speaker's left and right channel connection, I used 4 wires those come from audio jack and connects to the left and right speakers of the headphone. I removed headphone speakers and soldered those wires with sony Ericsson speaker's left and right channels.
Thus my speakers, headphone wire, and old card reader are now usable and giving very nice sound output.
I have attached the screenshots
