May I ask what I should do if I just got the Lenovo A580 machine, which uses a mobile 2G card, and t

Dear users, hello:

You can check in advance if your mobile SIM card is installed correctly and if the SIM card is valid. You can also visit your local mobile office for more information.

It is not ruled out that it is a problem with the stability of the system, you can contact your local Lenovo maintenance outlet to reflash the system for you and observe it for a period of time. If the local site staff can't directly propose an improvement plan for you, they will help you collect the relevant information of your mobile phone and feed it back to the manufacturer's technical department to help you further verify the situation and propose solutions, so as not to affect your subsequent use.

Inquire about relevant maintenance outlets.

We apologize for the inconvenience.

If your device's SIM card is abnormal, we recommend that you perform the following steps to resolve the problem:

1.If the SIM card is not in good contact, it is recommended that you turn off the SIM card and try to re-insert it to see if it can be used normally.

2.If the SIM card itself is abnormal or compatible, it is recommended that you use other SIM cards for comparison, if other SIM cards can be recognized, it is recommended that you contact the operator for card replacement or other operations;

3.If the above operations cannot identify or improve the problem, please back up the fuselage data and restore it to factory settings.

If the problem still cannot be effectively solved, it cannot be ruled out that it is caused by the failure of components such as the body card slot or radio frequency, we recommend that you take the time to go to a nearby Lenovo authorized repair station for specific testing and treatment.

Lenovo authorized after-sales site inquiry.

The following methods can be tried: 1. Try it with a different card. Make sure that the card slot model is the same.

2. Adjust the phone mode.

3. If the above does not work, reset the VPN.

4.If it doesn't work yet, it may be a hardware issue. It needs to be returned to the factory for repair.

1.The mobile phone hardware signal receiver is not good!

There's a problem with the card slot!

3.The outside signal is not good!

Try to change the card, if it doesn't work, you can only fix it.

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.

There is no network after inserting the card

If you don't know how to get it yourself, it's best to get it after sales and ask about it.

Your phone should be custom-made, and you can only use the company you brought with you when you bought it.