What should I do if the US version of the locked iPhone4 cannot be activated after upgrading the sys

Prepare the mobile phone card (i.e. micro-SIM card) to be used by Apple iPhone, if you do not insert the mobile phone card, you will not be able to activate the mobile phone.

1.Start pressing the power button of your iPhone to power on.

2.After waiting for the initial boot of the system, you will be taken to the welcome screen of the activated device, starting with swiping to unlock.

3.You will then be taken to the language selection screen, select China, and click the "Next" button.

4.Since during the activation process, you need to connect to the network and verify the phone with the Apple server to activate it, so you need to use the network. Select the wireless network and click the "Next" button when it is connected.

5.This is followed by the selection of some phone accessibility features, such as the "Location Services" feature, which is generally recommended to choose to activate.

6.You'll then be asked if you want to enter your Apple ID to connect to the App Store, which you can enter or leave unattended, click to skip this step.

7.Then it prompts you if you want to enter a password, and again, you can create a password, if you don't create one, click Don't Add.

8.For example, iCloud and other settings are optional, and you can choose according to your needs.

9.When everything is set up, you will see the welcome screen in Chinese, click to start using, and then the activation has been successful. In addition to some options that must be selected, such as iCloud, passwords, etc., you can choose to skip during the activation process, and you can set it slowly during the use process later.

The solution to this problem is currently to jailbreak the phone imperfectly and then unlock it with Super Snow! But I'll give you a look at this baseband ,..The only way to solve this problem is to do it with a hard downgrade, or the perfect jailbreak after the card you waited for was posted!

The national bank iphone4 passes by ..

Then update to the perfect cracked version.

Dear, hello, the American version of Apple cannot be activated for the following reasons, reason 1: the mobile phone is not installed with a SIM card when activating the iPhone, if the mobile phone does not have a SIM card installed, or an invalid SIM card is installed, the Apple mobile phone cannot be activated. This is because during the activation process of the iPhone, the phone will automatically recognize whether there is a valid SIM card installed, and if there is no SIM card installed or an invalid SIM card is installed, the mobile phone cannot be activated.

Solution 1: Insert a working SIM card into your phone and then activate it. Reason 2:

Unable to connect to the serverWhen the iPhone is activated, the prompt "Your iPhone cannot be activated because the server cannot be connected" appears, most likely because the iPhone is not connected to the network. This is because the iPhone needs to be connected to the network in the process of excitement, and it is not because the mobile phone needs to verify the information with the server of Apple's Gongkuyan Shed Division. If the phone does not have a network, it is naturally impossible to activate the iPhone.

Solution 2: Connect your iPhone to the wireless network at home, or use your own mobile phone data, and you can complete the activation of the iPhone.

Taobao buy an ATT card to activate, or activate it by jailbreaking. If you connect iTunes, it prompts that the SAM card is not supported. It means that you have a locked phone.

Please use the card or the corresponding card program to unlock it! Don't upgrade the version! Otherwise, it will lock the phone!

Activate it with a card unlock. With the card, you don't have to think about activation. Simply speaking, the card is to simulate your SIM card into an American card, and if you buy a card, you should pay attention to your mobile phone version and buy the corresponding card.

The U.S. version is locked, how can it be restored? You take it to the store and have them activate it with a US SIM card.

There are the following reasons:

1. Most of the reasons why you can't activate it are because you forgot your phone's ID password, and if you forget your Apple ID password, you can retrieve it through Apple's official website.

2. The mobile phone does not have a SIM card: the mobile phone cannot be activated without a card, please insert the card and then activate it.

3. The card is damaged or the phone has been upgraded: Some locked mobile phones need to be used with the card, no card, card damage or the phone has been upgraded will cause the phone card to be unreadable and cannot be activated, please replace the card.

4. Not plugged in: It may be that the card is not plugged in well, resulting in the phone not recognizing that the SIM card cannot be activated, so pull it out and reinsert it.

5. Card or card slot damage: You can insert other mobile phone cards to try, and then put the SIM card of the mobile phone itself on other mobile phones to see if there is a signal, if the card slot is damaged, it is recommended to replace the card slot, if the SIM card is damaged, please go to the business hall to replace the SIM card.

How to unlock via card:

1. Turn off the phone, put the cut SIM card and card sticker into the special card slot, turn on the phone, do not insert the SIM card first, and immediately unlock the screen lock to enter the desktop and push the SIM card into the SIM card.

2. Wait for a dialog box from Gevey Card to pop up, pop up and click Confirm, you need to wait for 15 seconds to proceed to the next step.

3. Wait for 15 seconds and dial 112, do not need to connect, hang up immediately (within 2 seconds), after hanging up, it will be stuck in the hang-up interface for a few seconds, and then return to the dial-up interface normally, at this time, open the settings to enter the airplane mode (within 5 seconds).

4. After entering airplane mode, waiting for 30-40 seconds will pop up an error window, prompting that the SIM card is not installed, ignore him, and leave airplane mode. Now the SIM card invalid prompt will pop up, still ignore it, wait for 10-20 seconds, and the long-lost signal appears.

Precautions for card unlocking:

1 First of all, the card unlocks the user, in addition to cutting the card with the card cutter, the user also needs to cut the card for the second time by himself, only its shape and the shape of the card match and can be inserted and used.

2 After using a card to crack the iPhone 4, there is a risk of being locked by Apple officials or operators at any time.

3 After unlocking iPhone 4 with a card, you need to follow the previous activation steps to activate it again when you turn it back on.

4 iPhone 4 may have no signal after unlocking it with a card.

The landlord means that the phone has not been activated and needs to be connected to iTunes to activate??? If this is the case, you need to insert the SIM of the ATT to activate it, and then unlock it with the card.

Every time this problem has been encountered, it should not be from this kind of problem. You take it to the place where you upgrade and take a look!

The reason is that you are flashing the time,At the same time upgrade the baseband caused,Not upgraded before it can be used because the previous baseband has been cracked,You are in the settings of the phone,General,About this machine to see the version of the modem firmware,If it is lower,**A card on the line,If it is,Congratulations,You need to unlock it through the AT&T official unlock server,Two ways,Free,On the official website,Communicate in English,Send an email to apply,Look at the character,Character has always been good mine is unlocked。

Charge, find an official solution on **, once untied will appear a week or a period of time and then re-locked, but also depends on the character.

After flashing, the U.S. version can only be activated with the original card, that is, the AT&T card. You can buy one on **, it's very cheap, about 10 yuan.

The U.S. version basically doesn't have an unlocked machine.,After swiping, you have to see that the operator before you don't brush is the telecom company.,You can activate it with their card.。

It is very likely that the revision machine is that the motherboard of the mobile phone has changed the chip and changed the version.

As a result, the information of the mobile phone does not match the original information, so it cannot be activated.

Do you still want to flash the American version? Is there a base band upgrade? Even if you don't have a base band, it's a brick.,Your phone is a black machine.,Try to use the original card to see if you can activate it.,If you can't activate it, you can only use the red snow jailbreak pseudo-activation! Your problem is that you can't push the verification.

It's hopeless. The activation mechanism has been changed. As long as it's been repaired before, it can't be activated when touch. One way to hard drop the baseband is only 56 hundred dollars.

The US version of the locked iPhone 4S activation can be done by following these steps:

1. Turn on the machine without inserting the card, and wait for the machine to enter the state to be activated.

2. Press the home button to bring up the emergency call interface, enter 112, and click to call.

3. Put the thumbs of both hands at the end of the screen at the end of the end of the call button on standby, and when the mobile phone is connected to 112 and there is a voice prompt, the right thumb clicks on the right side of the end call button, and then the left thumb quickly follows the left side of the end call button, and then the right hand continues to click, the left hand continues to click, and the two hands click alternately, the screen will appear: a, call - end - call - end - call failed - wait for more than 3 seconds, click cancel --- enter the desktop.

b, call-end-call-end--black screen but the call is through--wait for more than 3 seconds, click the home button--exit black screen--call hold-enter the desktop.

c, call-end-call-end--black screen but the call is on--wait for more than 3 seconds, click the home button is invalid--press and hold the power button--pop up the shutdown button--click cancel-exit the black screen--call hold-enter the desktop.

Should it be 64GB for AT&T? If you want to activate, you can only take the AT&T card to see if the package has it If you don't bring it, then the tragedy can't activate what prompt ? If it's no SIM, then there's really no way to activate it with an AT&T card It's not okay As for other unlocks, you have to figure it out yourself.

Your dad's friend is really spraying, and he didn't ask clearly when he bought it, and he bought it for $300, which he thought was quite cheap.

You can jailbreak and then use it as touch.