http://www.nokia.com
2. Motorola
http://www.motorola.com
3. Samsung
http://www.samsung.com
4. Siemens
http://www.siemens.com
5. NEC
http://www.necwireless.com
6. Kyocera
http://www.kyocera.com
7. Mitsubishi
http://www.mitsubishiwireless.com
8. Sony Ericsson
http://www.sonyericsson.com
9. Qualcomm
http://www.qualcomm.com
10. LG Electronics
http://www.lge.com