I'm wondering if they could work the phonetic angle since the "ph" orthography doesn't exist in spanish. Instead they should conduct the entire case calling it the "eep-hoan-ey". In ads and campaigns they could go out of their way to never pronounce iPhone (then again, I'm not sure trademarks extend to the phonetic pronunciation, so maybe the pronunciation used in deciding the case matters. I think trademarks only cover orthography).