Will my Japanese iPhone 5s work in the US?

8Unlocking it is not the issue. Its currently locked to AU, but I would take it to get unlocked after I get back.

I want to know if there are any hardware differences. My friend told me he thought that US and Japanese iPhones use different antennas or something. I want to know if this is true, or if the iPhone design is standard. Will I be able to connect to a US network with it?

Mine on softbank connects to the local network when abroad (right now!) but I'm still signed up with softbank. I don't think connecting to the network would be an issue as much as unlocking it…

  • Will a straight talk iPhone work in Japan with a Japanese sim card? I'm pretty sure you can put a sim card in it but I was curious I want to go to Japan sometime but it is difficult getting a phone there being a foreigner and it is pretty expensive but I see people switch their sim cards with there phones a lot like with at&t ect. I wonder if that would work the same overseas? Like putting a japanese cell service provider's sim card in the phone? This probably sounds really stupid though but thank you!
  • Which company is my Japanese iPhone locked to? Recently bought an iPhone off someone who said the iPhone was unlocked. Put my SIM card in it and will not accept. So obviously it is still locked. I have no problem unlocking it myself, but I don't know where to go to get it unlocked as I don't know where the iPhone came from in terms of its previous carrier. The iPhone is on hard reset so I can't access the settings or anything. I'm in Japan. Does anyone know how I can find this out?
  • What sims can be used on a Japanese locked iPhone 4S? I bought a second-hand iPhone 4S which is currently locked to a Japanese sim network but I live in the UK. Can any micro sim work and is there any way to unlock my phone if needed?
  • SIM unlock a Japanese iPhone? Just bought a iPhone 5 through a person to find out it is still locked. (yay) Apparently the carrier is soft bank, and so is mine. I put the SIM card from my broken phone into the one I bought to find that it is not valid. So I must get it unlocked. I heard it is expensive and I'm not trying to spend a fortune. I heard about some unlocking websites, but I wonder if any of you guys know how to unlock it at home? If not, what would be the cost to go to a carrier to unlock it?