You have a GSM handset. That code is for CDMA and TDMA phones only.Originally posted by wholesaler
As that code *3001#12345# dosnt work
To change the operator logo (alpha tag is on TDMA and CDMA phones) you need to use a data cable and software such as Logomanager, Logoexpress or Oxygen Phone Manager. You can then upload a 14 X 72 pixel .bmp or .nol file to your phone.