Samsung i535 (Verizon version S3) cannot use China Telecom 3G network

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• I finally solved the problem by referring to several articles.

I finally solved the problem by referring to several articles.

The reference document is as follows:

Http://bbs.189store.com/thread-66887-1-1.html

Http://www.diypda.com/thread-795593-1-1.html

Http://forum.xda-developers.com/showthread.php? T = 1756885

Basic file preparation before getting started:

I535 Computer DriverProgram

Preparations

1. Download an object

1. Download The i535 driver.And double-click to install.

2.Download the ADB file.

2. Go to the mobile phone and enable "Settings =" Developer Options => debugging"

The process is mainly divided into three parts (must be performed in order ):

1. Use Odin to directly fl Rom

2. Get root permissions

3. modify files related to the mobile network standard

Step 1: Use Odin to directly fl Rom

Download the odmin software and the ROM of the mobile phone first (Note: my mobile phone is version 4.1 ).

Odmin software (version 3.7 is used): Download

Rom

Download 4.0

Download 4.1

After the two files are downloaded.

OpenOdminSoftware files,Double-click to open the following file.

When the phone is not connected to the computer, press and hold the phone's "volume down key" + "Wake up key" (the middle ammonium key at the bottom of the screen) + power key. After the screen appears, press "volume up key" to enter the Odin mode.

The following interface is displayed when you connect to your computer with a data cable. Note: If the ID: COM is not green, do not proceed to the next step. check whether there is anything missing from the preparation and the above steps.

Next, click the PDA button to display the file browser. Select the downloaded ROM file from the file browser. (Note that the downloaded file is in tar format. decompress the package first, what we need is to decompress the package. MD5 files ). For example

Click "start" to start Rom flushing. After the brush is done, the chance is automatically restarted. (Note that you do not need to disconnect the connection between your mobile phone and your computer during the flash process ).

Step 2: Get the root permission

Download GS3_debugfs-root_r2 software first.

After downloading, decompress the file and double-click the rootdebugfs. BAT file.

There will be some inquiry prompts, and the button prompts the input. In this process, the phone will automatically restart about three times.

Step 3: Modify the file related to the mobile network standard

First download the qpst software,Install qpst Software

Next, hide the menu and modify the USB settings for connecting your computer to your mobile phone.

1. Open the dialing Interface

2. Enter * #22745927 to go to the hide menu switch interface.

3. Click hidden menu disable, select enable in the pop-up window, and click OK to exit the interface.

4. Open the dial number again and enter * #87284 To Go To The phoneutil settings page.

5. Select "PDA"

6. Click "Qualcomm USB Settings" below, select "DM + modem + ADB", and click "OK"

7. Exit

In addition, you can refer to this mobile phone dialing tool.CodeSoftware. Click here to download.

 

Decompress the downloaded ADB file, Enter cmd in "run", and double-click it to Enter cmd.

Decompress my ADB file to drive D, enter "cd d: \ ADB" in the command prompt line, and press enter, as shown in figure

Next, enter ADB shell and press Enter. Then, enter Su to use the Administrator's permissions.

Next, enter the following command in sequence and run the following command with the Enter key on one line:

Echo 0>/sys/class/android_usb/android0/enable 0
Echo SMD, Bam>/sys/class/android_usb/android0/f_rmnet/transports
Echo diag>/sys/class/android_usb/android0/f_diag/clients
Echo 1>/sys/class/android_usb/android0/f_acm/instances
Echo rmnet, ACM, diag>/sys/class/android_usb/android0/functions
Echo 1>/sys/class/android_usb/android0/enable

If the file path cannot be found during the preceding command input and execution, drop the data line, remove the Enable debugging option from the developer options, select the check box, and enter the following again: ADB shell then press the Enter key and then enter Su to run the preceding command with the administrator privilege. If a command fails to be executed more than twice, skip to a command.

Next, go to the Device Manager and find out which comport is occupied by the mobile phone. This is com4.

Choose Start> qpst configuration.
Select the ports tab, click Add new port in the lower-right corner, enter com4 in the port and port lable fields on the interface (enter com4 if the value is displayed on your computer), and click OK.
Now port should be displayed

Active phone is displayed

If it cannot be identified, re-dial the phone or try to delete the unused COM port and change the COM port of the phone to less than 20.

The following figure shows how to set up 3G Internet access for China Telecom. This setting is generally done before JS sends a mobile phone. If you have MMs, 3G is normal, skip this step.
If your 535 plug-in is capable of speech but cannot be 3 GB, it is generally because JS is not set or set incorrectly, and you will be asked to send it back or even collect your money to learn this trick, stay away from unscrupulous JS
After completing the settings of the above two posts
Choose Start> qpst> Service programming.
Select your mobile phone
If a window prompts "the server is running" or something, click "switch"

Open the M. IP tag
Select M. IP only, select 2000 ms, and then check the following check box
(The data before reading from phone is empty. I will not cut the following figure again. Normally, the data is blank)

Start PPP config
The second um is modified.
User fill ctwap@mycdma.cn
Enter vnet.mobi in Password
Others do not need to be moved (may be blank)

Click write to phone. If the following window is displayed, click OK.

Dial the data cable, change the USB mode back to "MTP + ADB" in the hidden menu, and restart the mobile phone.
Well, your machine should be able to access the Internet through 3G through China Telecom. ctwap is used for mms. If you don't need it, you can change it to ctnet.

It is best to take a completed photo and you can see the 1x icon next to the mobile phone signal, because my mobile phone is now using Verizon's network, and the mobile phone card is using a domestic telecom card. If the China Telecom card is a 3G card,

3G.