I'm vacationing in Sicily for a week and will use my iPhone 5 for turn-by-turn navigation extensively. I'm with AT&T and I don't want to eat up my data plan for the sake of GPS.
I've read about Google Maps offline and have had my iPhone download the maps for the territory I'll be covering in Italy.
Questions I hope you can help me answer:
1. Since I've downloaded all the map data and will have it locally stored on the phone, can I leave my iPhone's 4G/LTE antenna on for other purposes or will that trick the iPhone into re-downloading the maps?
2. If I must turn off Cellular Data in order to avoid racking up charges, will there be any issues with turn-by-turn navigation as a result of those antennae being disabled?
Hoping someone who has used Google Maps offline in a foreign country might be able to answer.
TIA
BJ