Subscriber Identity Module: the chip card enabling access of a mobile device to an operator network.

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0
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1answer
140 views

Can I use my iPhone 4 sim in another iPhone 4

I was just wondering if I am able to use my current iPhone 4 sim in another iPhone 4 because my current phone is breaking. Thanks
0
votes
0answers
20 views

How can I check if an iphone is sim unlocked already? [duplicate]

For the iPhone 4S and 5, is it possible to easily check if they are sim unlocked ? If so how ? I've already seen this question but sounds a bit more complicated than I hoped. What's the simplest ...
0
votes
1answer
814 views

Activating unlocked iPhone 4s with SIM but without contract?

I'm in a research lab where we're looking to get an iPhone 4s to use as a speedier iPod touch. We don't want a cell phone contract, and we want to avoid jailbreaking or borrowing a SIM card just for ...
0
votes
3answers
5k views

I tried updating my iPhone, but now it says “SIM is invalid”

I have an iPhone 3GS 32GB. I have just tried updating the phone using iTunes. The phone is second hand, and was unlocked when I bought it. I didn't know that when you try to update it, it loses ...
0
votes
1answer
486 views

Will I be able to use an unlocked AT&T iPhone 3GS with European carriers?

Moving to Austria in two weeks. I have an iPhone 3GS that has been unlocked by AT&T. Will I be able to use my iPhone 3GS with European carrier sim cards once I get there?
0
votes
1answer
9k views

Can I use wifi on my iPhone 3G without a sim card? [duplicate]

Possible Duplicate: Can you use an iPhone without a SIM card as an iPod Touch? I bought an iPhone 3G that is currently off and doesn't have a sim card. Is there any way I can enable the ...
0
votes
1answer
625 views

My iPhone 4S running iOS 5.0.1 recently started showing “invalid sim” message

I recently forgot to pay for my cellular service, and when I paid the service my iPhone keeps displaying an "Invalid sim" message, then I have to reboot to recover the service. The phone is working ...
0
votes
0answers
420 views

Why does my iPhone 3GS drop service and delay receiving of data?

I have a 16 GB iPhone 3GS. The phone is dropping the network sporadically. I am in a metro area that should have full coverage. I know I should have service, because I can sit right next to someone ...
0
votes
1answer
464 views

From a jailbreaked iphone 3g 4.1 (foreign sim locked) to 4.2

A friend of mine bought an iphone 3g with a sim card in another country. Some months ago he gave me this iphone, but he forgot to give me the sim too, so I've jailbreaked it leaving the sim-lock, that ...
0
votes
1answer
215 views

iPhone 3GS no sim error

I got an iPhone 3G from a friend and it is showing "no sim card" and I know the sim card is good and it won't let me do anything but phone start up. Can anyone help please?
0
votes
1answer
249 views

Can I use the T-mobile contract free iPhone 5S with my AT&T number?

I am thinking of purchasing the contract-free 5S because my contract with AT&T just expired, and I will only need the phone in the US for a few more months. Will I be able to use my AT&T sim ...
-1
votes
1answer
62 views

An iPhone with dual sim capability?

Is there any iPhone model with official dual sim capability?
-1
votes
1answer
1k views

Are there any cons to buying a used iPhone 4S unlocked by a Gevey sim?

In comparison to a factory unlocked iPhone, are there any cons to buying a used iPhone 4S unlocked by a Gevey sim?
-15
votes
1answer
9k views

Can I get a new SIM card for iPhone I found?

I found an iPhone lying on my table. I called every person I know that was in my house to check if it was theirs. No one said it was theirs. I waited a month later, keeping the iPhone in my drawer. I ...