Going to Japan next year and thinking of grabbing a unit there. Apart from the shutter sound, can I get an unlocked unit?

OK another new development on my phone. I used waze yesterday and force-closed the app after i was done with it to ensure it won't be running in the background. Charged my phone to full before I slept yesterday and this morning it drained almost 20%. When I checked the battery usage, waze took up about 40% of it due to "BACKGROUND ACTIVITY"

Waddahell. Before this it was the stupid mail app. I had no choice but to uninstall it and use the Gmail app instead. Problem solved. Now even waze is acting up. The hell are apple developers doing??? I've never had so many problems on an iphone before having used so many generations of their phones.