Refers to unlocking iPhones. Unlocking an iPhone that has been locked to a specific carrier (such as Verizon or AT&T), allows you to use it on other compatible networks.

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11 views

iPhone 5S showing SIM invalid [duplicate]

My brother brought me iPhone 5S from UK, It was given without any sim and it was working fine, until I restore it following restore iOS device to factory settings page, now I can't activate device, ...
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0answers
107 views

Locked iPhone 5 AT&T works on Tmobile network

Hope this question is in the right location. I recently switched from AT&T to Tmobile. I put in a request with AT&T to unlock an iPhone 5 under my family plan and was deined due to the ...
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0answers
293 views

iPhone unlock. How the iphoneosunlock.com service works?

Check this video How to Unlock any iPhone, how does the iphoneosunlock.com works? I thought that you can unlock iPhone only with Carrier Contract ID or SSN. Am I wrong? Can I do the same that the ...
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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 ...
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3answers
4k 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 ...
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1answer
441 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?
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2answers
2k views

How can I update and jailbreak/unlock my iPhone 3Gs from 4.1 to 6.1.3?

I have an iPhone 3Gs running iOS 4.1 (baseband 06.15.00, serial number: 8704244TEDG). I want to update it to iOS 6.1.3 instead of iOS 7. How can I update it, and unlock it using Ultrasn0w after ...
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votes
1answer
238 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 ...
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3answers
15k views

Unlocking old Sprint iPhone 4s

I have an old Sprint iPhone 4s that hasn't been under contract for around a year now and I have a friend on T-Mobile whose contract doesn't end for another year. He still has a flip phone so I want to ...
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2answers
370 views

iPhone 3G 4.2.1 Unlock

Is there any way I can unlock an iPhone 3G with Firmware 4.2.1 and baseband 05.15.04? I correctly installed Cydia and Ultrasn0w (under iOS 4.1.2 or something like that if I remember right) via ...
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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?
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2answers
885 views

Is it possible to use baseband at 4.10.01 on iOS 5.0.1?

Is it possible to use baseband at 4.10.01 on iOS 5.0.1? How, considering that redsnow 0.9.9b8 is does not recognise 5.0.1 ipsw? Is it safe to upgrade iOS wirelessly or it will upgrade the baseband ...
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votes
0answers
10 views

Help me unlock my Iphone! [duplicate]

It's an iPhone 4, no sim. Just did an update last night and as it was hooked to the computer, one of my kids ran by and knocked the cord out. Now I have to "unlock" the phone from the activation menu. ...
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votes
1answer
11 views

Sim not Valid for apple iphone 4s

i have the same kind of error on my iPhone 4s. How can I solve that problem?
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votes
1answer
382 views

How legit is this website in telling if the phone is sim unlocked [closed]

How legit is this website. It says my phone is not sim locked but I'm to scared to update it and ruin the jailbreak unlock. Somebody said they could factory unlock my phone for free so I gave them my ...
-3
votes
5answers
343 views

iphone 3GS and iOS 5.1

I have an iPhone 3GS which is locked on the AT&T network. It was jailbroken before and after I clicked "Erase all settings", it won't boot up. Now I'm thinking to upgrade to latest iOS 5.1 and I ...