Why can t my Huawei P20 use a telecom card

Hello, it is recommended that you contact the operator.

If it is not due to the carrier's fault, and the SIM card cannot be replaced, it is recommended that you bring the purchase invoice to the local Huawei after-sales service center for inspection and repair.

2. You can also have an after-sales outlet query address entrance at the bottom of the official website page of Huawei**;

If the service outlets are far away, you can choose to send repair services.

Huawei P20 is a full Netcom model,Support telecom standard,You can directly install the telecom mobile phone card to use,If the telecom mobile phone card cannot be used,It is recommended to restart the mobile phone test,If it still can't be used,Please remove the mobile phone card and wipe the metal part of the mobile phone card with an eraser,Then install it back to see if it can be used normally。 To learn more about service discounts, click on the "****" customer service 218 below to answer for you.

Hello, you can use it, this mobile phone is a full Netcom mobile phone, and it can be used directly by installing a telecom mobile phone card if it supports the telecom standard. Use the star card to enjoy the multiplication of traffic, the more the traffic is used, the more you use it, the more you swipe the **, play the whole network, easier and more free, you can log in to the Guangxi Telecom online business hall to view. Customer service 30 will answer for you.

Your phone may be a mobile network.

Support telecommunications. Huawei P20 was launched on March 27, 2018, and it is a fully Netcom mobile phone that supports 4G networks of China Mobile, China Unicom, and China Telecom, and can use telecom cards.

Huawei P20 supports dual SIM and dual standby, and it supports five types of 4G networks: Mobile TD-LTE, China Unicom TD-LTE, China Unicom FDD-LTE, China Telecom TD-LTE, and China Telecom FDD-LTE.

Summary. Hello, Huawei Mate20 suddenly can't use the telecom card Reasons and solutions:1

Confirm if the 5G switch is turned on: enable 5G and make sure the 5G switch of the phone is turned on. 2.

Is the power saving mode turned on? Under the NSA network, the power consumption of the 5G network will increase relatively, so after turning on the power saving mode, 5G may be turned off to save power.

Hello, Huawei Mate20 suddenly knew that the travel group could not use the telecom card Reasons and solutions:1Confirm if the 5G switch is turned on:

Enable 5G and make sure your phone's 5G switch is turned on. 2.Is the power saving mode turned on?

Under the NSA network, the power consumption of the 5G network will increase relatively much, so after turning on the orange power saving mode, 5G may be turned off to save power, you can try to turn off the power saving mode first.

3.Whether carrier aggregation is turned off. Under the NSA network, if the mobile phone carrier aggregation switch is turned off, the 5G network connection capability will be affected, and the 5G network may be closed.

You can pull down the notification panel, press and hold the mobile data icon to enter the mobile network interface, and click Advanced to confirm whether the carrier aggregation switch is turned on. 4.Network issues.

In the early days of 5G network deployment, 5G network coverage may not be so comprehensive, if the surrounding tracks of 5G mobile phones using the same operator's network have this problem, it may be that the local network does not cover 5G, you can go to other places to try. Card issues. If you install the same carrier SIM card in other normal use to the same card slot location of the machine, if there is no problem, it may be a SIM card problem, and you can find a different card with the operator.

6.Roaming asked no questions. If it involves the use of the domestic version of the mobile phone abroad or the use of overseas mobile phones in China, there may be a mismatch between the frequency band of the mobile phone and the operator.

At the same time, if your SIM card is already roaming internationally, you can check it in the drop-down status bar, press and hold the mobile data icon to enter the mobile network settings interface, select the network operator, turn off automatic selection, manually search for the operator through your mobile phone, and manually select the operator that supports international roaming.

Because there is no Telecom VoLTE function, if Huawei P20 needs to use two telecomic cards, it is necessary to enable the Telecom VoLTE function.

HUAWEI P20 card slot can be switched between primary card and secondary card at will;

For dual-SIM 4G network use, it is necessary to determine whether it is supported based on the operator's network and related service deployment. The subsequent mobile phone software functions may be upgraded with network matching, please refer to the actual version of the mobile phone support functions.

China Telecom (Chinese mainland region) dual SIM dual VOLTE function, mobile phone system upgrade to EML-AL00 and above version.

If both fuel backup cards are telecom cards, the secondary card (non-default mobile data card) must activate the telecom VOLTE service to use the dual telecom SIM cards at the same time.

OK. As we all know, Huawei's P-series mobile phones have always featured high-value design and thin and light bodies, but this does not conflict with large batteries. The battery capacity of the Huawei P20 series has been slightly improved compared with the previous generation, among them, the P20 has a built-in 3400mAh battery, and the P20Pro has a built-in 4000mAh super large battery, and thanks to the powerful AI performance, the battery life of the Huawei P20 series has broken through the past.

Huawei P20 is equipped with a rear dual camera, which is a 12 million pixel color lens with a 20 million pixel black and white lens design, with an aperture of and a large unit pixel area.

Huawei P20Pro is the world's first smartphone with three rear cameras, its three lens pixels are 40 million, 20 million and 8 million respectively, with a larger photosensitive area, its ISO can reach up to 102400, even in extremely low light environments can shoot high-quality**.

Both the HUAWEI P20 Full Netcom Edition and the HUAWEI P20 Mobile Customized Edition support China Unicom telecom cards.

Hello, the customized machine you said should be 4G+ mobile phone, it can be inserted into the telecom card, 4G+ mobile phone is also known as the difference between mobile full Netcom and full Netcom is that when inserting dual cards, the default mobile card is the main card, and can not be switched at will, that is, the traffic can only use mobile cards, if there is no mobile card, there is no difference with full Netcom. 4G+ is exactly the same as the full Netcom mobile phone in terms of hardware, so it is possible to change 4G+ to full Netcom through technical means.

Hello! Mobile can only be used by mobile, can not use telecommunications, the whole Netcom can, personal advice, if it helps you, please remember to adopt it, I need a little encouragement from you, thank you! Have a great day!

If it is indicated as a mobile customizer, it is not possible.

If your Huawei P20 telecom card does not have a 4G network, consider the following possible reasons:

1.The 4G function is not enabled for the telecom card attribute. In this case, you can contact telecom customer service to enable the 4G function.

2.SIM card is damaged. If you have another telecom card, insert it into your P20 phone, if the card has access to 4G, then your original SIM card may have been damaged. Traces of trouble.

3.Poor signal. If you are in an area with a weak signal, your telecom card may not be able to access 4G.

4.Problems with device settings. If your device is not set up correctly, such as not turning on the 4G function, it may cause you to lose access to 4G.

You can try restarting your device and checking that the card is inserted correctly. If the problem persists, you may need to contact China Telecom customer service or Huawei customer service for further assistance.

Hello, this mobile phone is a full Netcom mobile phone, supporting telecom standards, telecom mobile phone cards can be installed in any card slot for use.