When the phone starts up, there is a static or animated Nokia logo with two hands joining. This logo may appear as well as a separate user startup logo that was set by the operator or in MobiMB.
In many older phones, this logo did not display if a custom startup logo was available, however later models and firmware versions usually display the Nokia logo as well.
In these instances, the behaviour is built in to the firmware, however it is frequently possible to switch this behaviour off using NkProfile V3.
NkProfile is available to registered users of LogoManager Pro Suite or MobiMB from your private downloads area.
Your phone and firmware version need to be one of those known to NkProfile (let us know if you'd like a specific phone/firmware added). Note that, in these phones, it is not possible to remove both the logos - the Nokia logo is always shown if no custom logo is set, but you can set a blank/white custom logo if you don't wish anything to be displayed on startup.