Why can t Lenovo A520 use mobile phone card traffic?

1.Please ensure that the surrounding network environment is good, and you can change the usage environment or compare it with other nearby users.

2.If there is a problem on other mobile phones, it is not excluded that the SIM card is abnormal, and it is recommended to contact the operator for further processing.

3.Please go to: System Settings - Wireless & Network - Mobile Network - Access Point Name, switch the existing access point, and restart the observation;

5.Please back up the fuselage data for factory reset, if it is invalid after restoration, please send it to the repair site in time for processing.

Inquire about authorized maintenance sites on the official website.

You are welcome to contact us or visit Lenovo at any time

Consult to find out.

You put your hand on the top screen and pull it down,A drop-down menu appears,You click on the button with a switch,The button for data connection appears,You click on it,It's lit up and you can go online,And,Don't open it when you're fine,Lenovo This is specially customized for large traffic radiation。

Look for it in the settings, it may be that the operator is wrong.

Lenovo Mobile Tablet Service & Support**.

Of course, you can customize the machine just to limit individual features.

It works properly. If it is a contract machine or a contract period, you need to plug in the Unicom card every month to activate it. Feel free to use it if it's outside of the contract period.

Dear Lenovo users, hello!

Lenovo Community:

The company's card, call ** to ask (mobile 10086, Unicom 10010.)Telecom 10000), if it's not a card problem, it's a problem with your mobile phone.

In the function menu, tap Settings, then Wireless & Network Settings, then Mobile Network, and then tap Data Enabled (i.e., enable data access for mobile networks).

Hello. Sorry for the inconvenience caused to the normal use of your mobile phone.

The problem that the mobile phone cannot move data to access the Internet may involve whether the SIM card is in arrears, the mobile data service switch, the access point, and the system is abnormal. It is recommended that you try to confirm and perform the following steps again:

1. Is the mobile data service switch not turned on?

You can scroll down at the top of your phone's screen to see if the data service feature is enabled.

2. Is the SIM card in arrears or abnormal?

Try dialing ** to see if the call works. In addition, if you have just paid the phone bill after the shutdown due to arrears, you need to restart the mobile phone before you can access the Internet normally, please understand. Or you try to change to a different SIM card for testing.

3. Is it caused by the poor signal of the current network?

Are you sure that other mobile phones can access the Internet normally? Or compare yourself to other users around you.

4. Is it caused by an abnormal access point?

You can try toggling the access point under "System Settings - Wireless & Networks - Mobile Networks" on your phone.

Or check the settings again, you can refer to this for specific settings.

5. At the same time, do you also make sure that you have operated some traffic monitoring settings?

For example, Lenovo's Lenovo security - traffic monitoring - application network management operation related, or others such as 360 mobile phone guard, etc.

6. If you used it normally before, you can try to back up the important data of the fuselage, and then restore the factory settings of the phone to see if it can be improved. (System Settings - Operational under Privacy)

If the problem persists and cannot be effectively solved, we recommend that you take the time to go to your local Lenovo service center and have an engineer help restore the system to use, or test and solve it. You can log in to the official website to check the address.

You are welcome to contact us at any time or visit Lenovo Lewen (for consultation.

Your question is too general and inaccurate.

There are many reasons why you can't get online, you try these:

1. Computer hardware failure: network card, road oiler, Internet modem, network cable connection error.

2. The connection at the bottom right of the monitor is displayed as crossing, indicating that the network cable connection is abnormal; Check if the network connection indicator on the back of the host is on, if not, make sure that the network cable is not connected properly, try to plug it back in.

3. When the computer hardware is not faulty, you can't get on, if you use the oiler, disconnect the oiler, connect the network cable directly to the cat, try with dial-up, if you can go online, there may be a problem with the oiler, if you can't get on, try to change the cat.

4. Call ** to confirm the network status with the network operator.

Is there a problem with the network settings?

Look clearly at the position of the card, some are put 2G cards, and some are put 3G cards, don't mix them. Then it is possible that the signal of your location is not good, I and the landlord are using the same mobile phone, and there has been a similar situation, it really doesn't work, turn off the phone for a period of time and then turn it on, if it still doesn't work, it is recommended to change a card, and you can change the number when changing the card.

What card are you putting in place? If your phone doesn't support telecom cards, it's useless to put telecom cards, or your phone only supports telecom cards, and it's useless for you to put other cards. Then you can take it to the phone repair shop and have a look. Hope it helps.

I'm also an A520, and it's the same situation as you, and I've just dropped it a few times.