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What if Apple 4s can't use telecom 4g card?
The 4s mobile phone does not support telecom 4g, and it can only be used through the 3g network after loading the 4g card.

The solution to the problem that iPhone6/6 Plus Telecom of the Bank of China cannot access the Internet;

1, please download? Configuration information and configuration method of telecom 3G cmnet. Zipper. (No data changes)

2. Send yourself an email with downloaded attachments, open the email with your mobile phone and check the attachments in the email. (via mobile phone or computer)

3. A window will pop up, prompting to install APN of telecom.

4. Prompt for an unsigned description file, and then click Install.

5. If you set a password, you will be asked to enter it when installing. If you haven't set a password, please go directly to the next step.

6. At this point, the installation is complete. You can see an additional "operator" in the phone settings.

7. Click the operator option, and then select NAI:ctnet@mycdma.cn.