Have iPhone 4, iPad 3G and other brand phones with you? Changing SIM card between them is not as simple as ABC because both iPhone 4 and iPad 3G are using micro SIM card while others are still using the normal one. What should you do then? Simple, DIY your own micro SIM card adapter. But I am too lazy to do so as I scare that I might cut myself during the DIY session. So I looked for micro SIM card adapter in Malaysia. Too bad that I cannot find any retail shop that is selling micro SIM card in Penang or Kedah. So I bought it online.