Will jailbreaking an iphone also unlock it?

I have bought an iphone 4 from japan and i'm from the philippines. I tried inserting smart/globe sim card and it says invalid sim.

so do i need to unlock it before jailbreaking?

or will jailbreaking also unlock its sim capability?

Jailbreaking does not unlock iphones.
only the original carrier can unlock it

  • Will jailbreaking my iphone 4 remove the unlock i have for tmobile? I want to jailbreak my iphone 4 which is currently on ios 6.1.3 if i do this will it remove my unlock that i got for tmobile. Att store was the one that unlocked my iphone.
  • Will Jailbreaking my iPhone 3GS ruin my unlock? I have an AT&T iPhone 3GS on 6.1.3 (I know there's no jailbreak for it yet, but I know an untethered is being made) and I have it unlocked to be used with T-Mobile. If a untethered jailbreak comes out for 6.1.3, will my unlock be ruined and not let me use my T-Mobile services? ps. I have it unlocked, not jailbroken, so I don't have cydia
  • Will jailbreaking iPhone unlock it? I have a black sprint iPhone 4S, and I have t-mobile. IPhone 4S's come with a sim card holder and tray too, but I have to go to sprint directly to unlock it for a high fee. I heard if I jailbreak it, it gets unlocked and I can use t-mobile with it! Is this true? Will jailbreak unlock an iPhone 4s to use any carrier, and if so how do I do it?!
  • Iphone unlock and jailbreaking? I bought a unlocked brand new iphone and the guy told me not to update it or it would render the phone useless by ridding it of the unlock whih i already knew, but i want to jailbreak it as well to get the most out of the phone so if i jailbreak the phone will that mess it up or am i gonna be safe?