mobile devices manufacturing

Anyone knows what countries/cities the biggest manufacturing is based in for companies like Nokia, Ericsson Sony, Siemens Mobiles, Philips, Motorola?

Also, anyone can suggest good web sites where to advertise these types of jobs:

- Java Developer
- Electronics UI Designer,
- Hardware Designer
- Mechanical Designer for mobile devices
- Team Lead Application Development
- Mobile Application Developer

and find candidates with previous working experience that have worked for mobile phones manufacturer