I can't take credit for these hacks...they are just a collection of common known registry hacks. this actually was a massive post by mala but I broke it down to individual posts.
this hack only removes the Sprint PCS logo above ur last call line in the phone app. hey which phone u got if its the 6700 see
here. (mainly the performance enhancing .cab I made which just contains the best/most essential hacks. also fr a different phone pad do a search for eten dialer and u will see a dialer skin and theres one with bigger numbers I do believe.
~mike