providers then the location information is erased even though the location information service provider may be one of the third or fourth listed preferred service provider furthermore step 132 in fig5 may also be modified to check only if the location information service provider is the home service provider and if it isn 39 t then step 132 will erase the location information the effect of the various aspects of the present invention is to use the concept of erasing the location information fully or in part to take advantage of the service provider search routine of the wireless device in this manner the wireless device can be directed more efficiently to an acceptable service to provider thus there may be other aspects of the invention not disclosed or discussed here involving ways of erasing the location information or other stored service provider information to take advantage of the service provider search routines any and all such modifications of this basic idea are considered as within the scope of the present disclosure although the above description may contain specific details they should not be construed as limiting the claims in any way other configurations of the described embodiments of the invention are part of the scope of this invention for example many of the embodiments are disclosed as being associated with the gsm system and sim cards however other wireless networks with various wireless devices may also store the current or most recent service provider in a memory unit the present.