The operator logo is the pictureon top of your phone screen, inmost cases is the name of your operator.
How to change it for a nice picture? You can do this by diferent ways:First create this folder if you dont have it:C:SystemAppsPhoneOplogoThe operator logo will be stored on it...)You can use FExplorer (any jpeg/bmp, no resize), seleQ (any image, it will resize it) --> select the image you want be operator logo, select options-file-set as operator logo.
You can make your own logo:The operator logos have the following format:COUNTRYCODE_NETWORKCODE_SUBNETCODE.BMPFor example, for Spain:Amena: 214 03 -> 214_3_0.BMPMovistar: 214 07 -> 214_7_0.BMPVodafone: 214 01 -> 214_1_0.BMPIn the PHILIPPINES:Smart: 515 01Globe: 515 02The size for bmp is 97 x 25 pixels.Also, you can store diferent logos for diferent operators. For example if you change your SIM to other operator, youwill see the other logo, or if you travel to other countries, you can store diferent logos forthe operators in this countries.You have a list of country codes and network codes here ,just ignore the first "0" in network code if any.
If you want to delete the logo to restore the original (name ofthe operator) just delete the bmp file from c:systemappsphoneoplogo.