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Anonymous users2024-02-06Reasons: 1. The current mobile phone is not a three-network all-eat-all, and each mobile phone has a different network standard mobile phone;
2. Some mobile phones cannot put two telecom cards;
3. The SIM card is not all turned on;
4. Problems with mobile phone hardware;
5. Problems with SIM cards.
Solution: 1. Re-insert the SIM card when the power is off;
2. If two telecom SIM cards are installed on the telecom dual-SIM mobile phone, please replace them with other cards;
3. Turn on the SIM card: enter the mobile phone settings - turn on the mobile network Dual SIM and mobile network.
4. Turn off the phone and restart it.
One of the possible reasons and solutions for the lack of display of dual SIM phones:
1 First of all, confirm whether the mobile phone supports the network mode of the card, if not, it cannot be used. You can check the manual of the mobile phone for reference.
2 Whether the mobile phone card is normal or not, you can change it to another mobile phone to try.
3 Whether the mobile phone is normal, you can put the main card mobile phone on the card 2 to see if there is a signal, if there is no problem with the mobile phone, if not, you have to see if the card slot is damaged, try other mobile phone cards to see, if not, you can only replace the card slot after sale.
4 If the current network status is normal, you can go to the operator's outlets to check it.
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Anonymous users2024-02-05What kind of model are you inquiring about? We recommend that you try the following:
1. Take out the SIM card and reinstall it.
2. Try a different SIM card.
4. Update your phone's system through "Settings - > More Settings - > System Upgrade - >Check for Updates Now". You can go to Settings -> More Settings -> System Upgrade ->Check for Updates Now-, according to the prompts**Upgrade package, click Verify and install, and the phone will restart and automatically enter the upgrade mode.
If you try the above methods and still can't help you solve the problem, it is recommended that you go to the after-sales service center to test your mobile phone, please rest assured, the technicians of the after-sales service center will properly deal with the problems encountered by your mobile phone, you can check the address of the after-sales service center in the settings of the mobile phone - more settings - after-sales service menu. You can also go to vivo official ** to check the address of the after-sales service center:
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Anonymous users2024-02-04Dear Glad to answer for you. 1. Restart the phoneWhen the SIM card 1 of the scumbag phone cannot be used and the card 2 can be used, don't worry, you can try to restart the phone first, let the phone re-read the SIM card, and see if it can be solved. 2. SIM card 1, when the mobile phone cannot read the card or cannot be detected, you can try to replace card 1 and card 2, or you can put the mobile phone card on other normal mobile phones to determine whether it is a problem with the card or the mobile phone.
Check whether the SIM is damaged, scratches cause poor contact between the SIM card and the mobile phone, and whether the metal surface of the SIM card is dirty, wipe it clean and try again. 2. Check whether the SIM card is in arrears, resulting in the card being unusable. 3. Search the network on your mobile phone, turn [Airplane Mode] back on, and sometimes the problem will be solved.
4. The deformation and loose contact of the mobile phone card tray will also lead to the inability of the mobile phone card to be recognized. 3. Upgrading the system The mobile phone system will also cause the SIM card to be unusable, you can back up the data, restore the factory settings or upgrade the system to try.
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Anonymous users2024-02-03My phone is dual-SIM dual-standby, why does it suddenly show only one card?
Dear, hello, my phone is dual SIM dual standby, why does it suddenly show only one card? The workarounds are as follows:1
Please restart your phone to try It is recommended that you restart your phone and let your phone re-read the "SIM card" before trying. 2.Please observe if the SIM looks good3
Observe whether the surface of the SIM card is dirty, clean the dirt on the surface of the SIM card, and avoid contact with the situation. 4.If you are cutting your own SIM card, it is likely that the SIM card shape is not standard, and it is easy to loosen when installed in the card tray, resulting in poor connectors.
It is recommended that you bring your ID card to the nearest operator's office to change the standard SIM card. 5.Please verify whether your SIM card function is good, if your SIM card is installed on other normal mobile phones and cannot be recognized, or other normal SIM cards installed on your mobile phone can be recognized normally, it is likely that your SIM card is faulty, it is recommended that you bring your ID card to the nearest operator's business office to replace the standard SIM card.
6.If the problem persists after attempting the above methods, we recommend that you back up your data in advance (third-party messaging apps need to be backed up separately) and bring your purchase credentials to a nearby Huawei Customer Service Center for testing.
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Anonymous users2024-02-02Open the main interface of the phone, and then choose to tap the "**" icon on the interface of the main phone of the phone. After opening the **Main Field Slide interface, enter "Asterisk Tic-tac-toe 06" in the dialing window, and the mobile device identification code will pop up on the mobile phone. Finally, a window will pop up in the mobile phone system, and you can see the network access license number of the mobile phone.
Classification: Mobile phones are divided into smartphones and non-smartphones, the performance of smartphones is better than that of non-smartphones, but the performance of non-smartphones is more stable than that of smartphones, and most of the non-smartphones and smartphones use the CPU of the British ARM company architecture. Smartphones have a higher frequency.
It runs fast, handles faster tasks, and is more convenient in daily life (for example, Nokia N81 has a clock speed of 369 MHz); Non-smartphones have lower clock speeds and slower speeds (for example, the Nokia 5000 is 50 megahertz).
Smartphones refer to personal computers, with an independent operating system, most of them are large-screen machines, and they are capacitive touch screens, and some are resistive touch screens, which are powerful and practical.
It is a general term for a type of mobile phone that can be installed by the user himself, including a program provided by a third-party service provider, such as a game, to continuously expand the functions of the mobile phone through such a program, and to achieve wireless network access through a mobile communication network."
Broadly speaking, in addition to the call function of a mobile phone, smartphones also have most of the functions of PDA, especially personal information management and browser and e-mail functions based on wireless data communication. <>
That is to say, 1 mobile phone uses 2 numbers, but for example, if you come**2 numbers come at the same time**, you can only answer 1 number, and you can only answer another after hanging 1, and you can't answer 2 at the same time.
Is there a caller ID function?
It's very likely that there is a virus in the card.
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The signal cannot be shielded, and 3G mobile phones use 4G cards, and only 3G networks can be used. If there is no 3G network in the local area, I will switch to a 2G network.
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