During the last evening, tweaks with the names appeared in Cydia 2 MakeMyPopup si myname, but both have the same description and were developed by the same person. Both the first and the second bring the same functionality to iDevice owners, more precisely through them you can immediately change the text that is displayed in the upper left part where the operator's name normally appears. These are not the first tweaks of this kind and certainly not the last, but through them you can quickly change that text.
In Cydia you will surely find MakeMyPopup or MyName, any of them being available for free.
