Contract SIM-card on an unlocked iPhone 4?

[Pantrelli]

Hi, I currently have a contract with T-Mobile at the moment and want to change from my Samsung to an iPhone 4, I am able to get my hands on a unlocked iPhone 4 but before I do so, I want to make sure, will my sim-card which is on contract work on an unlocked iPhone 4? I have only seen prepaid sim cards being mentioned hence the confusion. I don't want to spend money on a device that I can not use at the end... I understand that I will need to cut the sim-card to a compatible micro-sim but my main concern is whether if my contract sim card would work on an unlocked iPhone 4.

Any help would be appreciated. Thanks in advance

 

[perky_pat_x]

Yes! It will. The contract doesn't know what phone is being used and doesn't care. And the iPhone is unlocked. So, bingo!

 

[Pantrelli]

Oh YES! Great thank you!
Do you know if 3G would work? I was looking through my network statuses and it said that the Mobile Network type is UMTS, would that enable 3G if I was to get an iPhone?

 

[Napoleon PhoneApart]

The 3g on T-Mobile in the US uses different frequency bands, so your iPhone won't work on their 3g cell network.

 

[Pantrelli]

The 3g on T-Mobile in the US uses different frequency bands, so your iPhone won't work on their 3g cell network.

I'm in the UK though... (Sorry, should have said that earlier)

 

[Chex]

I can't find the answer by googling , but I was under the impression that uk t mobile and Att in the us used the same band.


Sent from my iPhone 5 using iCafe app

 

[Pantrelli]

I checked and it says the European frequency bands are either 2100 or 1800, is this compatible?

 

[Chex]

Att uses 850 and 1900
But the iPhone is quad band so it has the European bands in it. (900/1800) so your good.

Sent from my iPhone 5 using iCafe app

 

[Pantrelli]

Excellent! Thank you!