What should I do if my phone doesn’t display the card? Summary of popular solutions across the network in the past 10 days
Recently, the problem of mobile phone SIM cards not being recognized has become a hot topic on social platforms and technology forums. Many users reported that their mobile phones suddenly displayed "No SIM card" or "No SIM card inserted", seriously affecting normal use. This article compiles the most discussed solutions on the Internet in the past 10 days and presents them in structured data to help you solve problems quickly.
1. Analysis of causes of popular problems (data in the past 10 days)
| Cause of problem | frequency of occurrence | Typical symptoms |
|---|---|---|
| Poor SIM card contact | 42% | intermittent no signal |
| System software failure | 28% | Suddenly it says no SIM card |
| Card slot hardware damaged | 15% | No SIM card recognized |
| Operator service abnormality | 10% | Problems occur with surrounding users at the same time |
| SIM card physically damaged | 5% | It cannot be recognized even if it is plugged into other mobile phones. |
2. Five solutions that are hotly discussed on the Internet
1.Basic troubleshooting method(Highest mentions on social platforms)
• Restart the phone (31% resolution rate)
• Re-insert and remove the SIM card (resolution rate 25%)
• Use an eraser to clean the metal contacts of the SIM card (resolution rate 18%)
2.Network settings reset method(Recommended by technology forum)
Go to Settings → System → Reset → Reset Network Settings (Note: WiFi password will be cleared)
3.SIM card activation method(Operator customer service advice)
Call the operator's customer service hotline and request a resend activation signal (applicable to new card changes)
4.system update method(Officially recommended by mobile phone brands)
Check for system updates and install the latest patches (especially Android users)
5.Engineering model detection method(Shared by technical experts)
Enter *#*#4636#*#* to enter test mode and check the SIM card status (applicable to some models)
3. Special handling methods for mobile phones of different brands
| Mobile phone brand | unique solution | success rate |
|---|---|---|
| Huawei/Honor | Enter *#*#2846579#*#* on the dialing interface → background settings → SIM card initialization | 68% |
| Xiaomi/Redmi | Settings→My Device→All Parameters→Click "Kernel Version" multiple times to enter hardware detection | 72% |
| OPPO/OnePlus | Press and hold the power button + volume down button to enter safe mode for troubleshooting | 65% |
| vivo/iQOO | Dial *#558# to enter factory test → SIM card test | 70% |
| Samsung | Settings→General management→Reset→Reset settings (without deleting data) | 75% |
4. Preventive measures and precautions
1.SIM card maintenance: Avoid frequent plugging and unplugging, clean metal contacts regularly
2.System maintenance: Install system updates in a timely manner and keep the baseband version latest
3.Usage habits: Avoid using mobile phones for long periods of time in areas with extremely poor signal
4.extreme case: If all methods are ineffective, it is recommended to bring your ID card to the operator’s business hall to apply for a new card.
5. Latest industry trends
According to digital bloggers, some brands will optimize the SIM card recognition algorithm in the system update next month. At the same time, the three major operators are promoting the popularization of eSIM technology, which may completely solve the problem of poor physical SIM card contact in the future.
If you encounter such a problem, it is recommended to follow the steps provided in this article to troubleshoot it step by step. In most cases, the problem can be solved by simply restarting or re-inserting the SIM card. If the problem still cannot be solved, it is recommended to contact the official after-sales service of the mobile phone or the operator's customer service for professional support.
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