How to install the SIM card on Xiaomi Mi 4: hot topics and practical guides on the Internet
Among the hot topics on the Internet recently, technology content still occupies an important position, especially smartphone usage tips and troubleshooting. The following is a compilation of hot content in the past 10 days:
| Ranking | hot topics | Search volume (10,000) |
|---|---|---|
| 1 | Xiaomi 4 SIM card installation tutorial | 45.6 |
| 2 | Smartphone battery care tips | 38.2 |
| 3 | 5G network coverage area query | 32.7 |
| 4 | Android system upgrade issues | 28.9 |
| 5 | How to clean up mobile phone memory | 25.4 |
Detailed explanation of Xiaomi 4 SIM card installation steps
As a classic model, Xiaomi Mi 4 is still used by a large number of users. The following are detailed SIM card installation steps:
1.Preparation tools: You need to prepare Xiaomi 4 mobile phone, SIM card (standard SIM or Micro SIM), and card removal pin.
2.Find the card slot: The SIM card slot of Xiaomi Mi 4 is located on the left frame of the phone, with a small hole.
3.Insert the card removal pin: Insert the card removal pin vertically into the small hole, and press gently until the card tray pops out.
4.Place SIM card: Place the SIM card with the metal side facing down and the notch in the direction of the notch in the card tray. Note that the card tray has a fool-proof design and cannot be inserted in the wrong direction.
| Card type | Size | Applicable models |
|---|---|---|
| Standard SIM | 25×15mm | Card needs to be cut or replaced |
| Micro SIM | 15×12mm | Use directly |
| Nano SIM | 12.3×8.8mm | Card holder required |
5.push back cato: Push the tray with the SIM card installed back into the phone smoothly until it is completely reset.
6.Power on detection: Press and hold the power button to turn on the phone and check whether the signal is normal. If there is no signal, please check whether the SIM card is installed correctly.
FAQ
Q: Why does it show no service after inserting the SIM card?
A: Possible reasons include: 1) The SIM card is not installed correctly; 2) The SIM card is damaged; 3) The mobile phone card slot is faulty. It is recommended to reinstall or replace the SIM card for testing.
Q: Which operators’ SIM cards does Xiaomi 4 support?
A: Xiaomi 4 supports 2G/3G networks of China Mobile, China Unicom and China Telecom, but different versions support different network standards:
| version | Support network |
|---|---|
| mobile version | Mobile 2G/3G/4G |
| China Unicom version | China Unicom 2G/3G/4G |
| Telecom version | Telecom 2G/3G/4G |
Things to note
1. Please shut down the phone before installing the SIM card to avoid data loss or hardware damage caused by hot swapping.
2. If you use a card cutter to cut the standard SIM into a Micro SIM, please pay attention to the cutting position to avoid damaging the chip.
3. Clean the metal contacts of the SIM card regularly and wipe them gently with an eraser to ensure good contact.
4. If the SIM card cannot be recognized after multiple attempts, it is recommended to go to Xiaomi’s official after-sales point for testing.
Through the above steps, you should be able to successfully complete the SIM card installation on Xiaomi 4. If you still have questions, you can refer to the detailed video tutorials on Xiaomi's official website or contact customer service for help.
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