Customize operator's nameTo show specified operator name set HKLM\SOFTWARE\OEM\PhoneSetting\ONSDisplayRule=0 (DWORD decimal)And then at HKLM\SOFTWARE\Microsoft\RIL\Operator Namesadd the code and the name to display. The value is 5 digits "CCCOO", where CCC is 3-digits country code, and OO is 2-digits operator's code. For example: "25099"="BEE LINE"For country and network code, go to wikipidea for [mobile country code|http://en.wikipedia.org/wiki/Listofmobilecountrycodes] and [network code|http://en.wikipedia.org/wiki/MobileNetworkCode]To show operator name based on the SIM card used (eg for cases where dual SIM adapter are used), set HKLM\SOFTWARE\OEM\PhoneSetting\ONSDisplayRule=1 (DWORD decimal)For my dual-SIM adaptor, when I switch between SIMs, the phone with default settings showed always one and the same name, until I reboot the device. Then, it was not able to retrieve operator's name from one of the SIM cards I use. Probably it is an adaptor fault. But anyway, after I changed ONSDisplayRule to 0 and set more up-to-date names for operators that I use, I now always see the name of the operator of the chosen SIM.