How to check iPhone 4: analysis of hot topics and hot content on the Internet in the past 10 days
With the development of technology, although iPhone4 is an old model, there are still many users using or collecting it. This article will focus on the theme of "How to check iPhone 4", combined with the hot topics and hot content on the Internet in the past 10 days, to provide you with detailed answers and structured data.
1. Basic information query method for iPhone4

If you want to query the basic information of iPhone4, you can use the following methods:
| Query content | method | Description |
|---|---|---|
| serial number | Settings > General > About this Mac | Serial number can be used to verify device authenticity and warranty status |
| IMEI | Enter *#06# on the dialing interface | IMEI is the unique identifier of the device |
| System version | Settings > General > About this Mac | View current iOS version |
2. Hardware detection method of iPhone4
If you want to detect the hardware status of iPhone4, you can refer to the following steps:
| Hardware components | Detection method | FAQ |
|---|---|---|
| screen | Check whether there are any bad pixels and whether the touch is sensitive | Screen aging, touch failure |
| battery | Settings > General > Usage > Battery Percentage | Short battery life and abnormal charging |
| camera | Photo and video testing | Camera is blurry and unable to focus |
3. iPhone4 software and system query
iPhone4 software and system queries mainly include the following aspects:
| Query items | method | Things to note |
|---|---|---|
| System update | Settings > General > Software Update | iPhone4 supports up to iOS 7.1.2 |
| Application compatibility | Prompt when downloading from App Store | Many new apps no longer support iOS 7 |
| storage space | Settings > General > Usage | iPhone4 has limited storage space |
4. Hot topics about iPhone4 in the past 10 days on the Internet
According to the data of the entire network in the past 10 days, the following are the hot topics and hot content about iPhone4:
| hot topics | Discussion popularity | Main content |
|---|---|---|
| iPhone4 nostalgic style | high | Many users share their experience and collection value of iPhone4 |
| iPhone4 Repair Guide | in | How to replace iPhone 4 battery or screen yourself |
| iPhone4 system downgrade | low | Discuss whether it is possible to downgrade iPhone 4 to an earlier iOS version |
5. Second-hand market situation of iPhone 4
If you want to buy or sell a second-hand iPhone4, you can refer to the following market conditions:
| Fineness | Price range (RMB) | Remarks |
|---|---|---|
| Brand new and unopened | 800-1200 | Rare, mostly collectibles |
| 90% new | 300-500 | Functional, minor cosmetic wear |
| 50% new | 100-200 | There are obvious signs of use, and there may be problems with the function. |
6. Summary
As a classic smart phone, iPhone4 has withdrawn from the mainstream market, but it still has certain use and collection value. Through the query methods and structured data provided in this article, you can easily understand various information about iPhone4. Whether it is hardware detection, software query, or market conditions, I hope this article can provide you with valuable reference.
If you have any other questions about iPhone4, please leave a message in the comment area and we will be happy to answer it for you.
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