I just wonder if the idea has ever been floated. Not to encourage Cell phone usage versus other means, but could be a handy tool 'in the field' to look up a callsign, especially if you're operating out somewhere with cell coverage and didn't want to pack a computer with you. I know many a time I've looked at logs and luckily with it being Field day, a lookup quickly determined if the N I thought it was is actually a W or whatever, since I knew what ARRL district they were in. I know there are callsign CD's etc also, but sometimes packing a computer, even a laptop into the field is difficult. But seems like everyone has a cell nowadays, even if like me they only carry it for the XYL and emergencies. So has this idea ever crossed anyones mind at QRZ, or otherwise? Or does it exist already somewhere and my search just yielded nothing because I'm searching wrong? Thanks for any commentary.