I WANT TO BUY AN I PHONE 3, IS THERE A DIFFERENCE BETWEEN 3 AND 4?

In another 1 month, 4 will also be eliminated, because there are 5 generations.

The generations are all "iOS 4."*.The minor version number has been upgraded.

Bluetooth function is the same, Bluetooth is supported, but contacts cannot be transferred (I heard that it can be after jailbreaking). As for the generational differences, there are too many, from the appearance to the CPU, to the memory, to the camera, to the screen, all of them are different. This upgraded product is not a small step, it is simply a leap!

Function - iPhone 4 is well known, with 2 cameras on the front and back, and a 5 million pixel camera on the back. And the 3rd generation only has a 3 million camera.

The 4th generation supports multi-tasking operations, for example, if you open ** chatter, you can't.

4th generation Internet speed, faster boot speed. Because the A4 processor used by the iPhone 4.

The 4th generation screen has increased the resolution, which is known as the retina screen, which means that the resolution exceeds the recognizable resolution of your eyes, and the 3rd generation has a low resolution.

Design – The 4 has a flat back design behind it, and the 3rd generation has a rounded design. And the audio buttons below are also treated with soft plastic and tempered to the screen. Baking paint is a piano paint plus thickening treatment.

Technology - A4 processor, 5 million rear camera is almost a digital camera. Three-axis scrolling is added to make the operation more sensitive when playing games, and it supports multi-tasking operations.

Battery life – The iPhone 4 uses a larger area of battery to provide longer battery life.

Jailbreaking is to remove the restrictions of the original firmware of the iPhone, and the biggest benefit is that it can install cracked software, which may have been charged. Jailbreak alone is risky, so it is recommended to let a computer expert handle it.

The 4 to 3 appearance can look better, multiple front cameras, the camera function can be stronger than 3, and the machine speed of 4 can run faster than 3, such as playing games better, and the battery life is also much stronger. All have Bluetooth capabilities.

In fact, it's essentially used to play **.,If you're not interested in the game.,There's not much difference in essence.,Take a 4-generation out.,Maybe it's more admirable.,Satisfy your vanity.。

Jailbreaking is to break through Apple's restrictions by installing cracked software, so that users can install other smartphone software at will, otherwise they have to spend money to buy it from Apple!

1. The screen is much better, the IP4 resolution is nothing, and the 3GS screen is a little outdated.

2. The feel is much better, the 3GS plastic feeling is strong, the IP4 glass material is very textured, and it feels very high-end.

3. The hardware has been improved. The CPU went from 628MHz to 1GHz. However, in actual use, it feels like the difference is not very big. There is no difference between 1st and 2nd generation, or 2nd and 3rd generation.

4. IP4 has no disadvantages compared with 3GS. The so-called signal difference is basically not felt. But if there are any shortcomings of the iPhone, I think, the battery cannot be replaced. It's quite inconvenient. Go out and play and don't dare to play it to the death. I'm afraid that there will be no electricity...

5. Now it is the most cost-effective to buy IP4 or IP 3GS 8GB version to buy Unicom contract machine. No matter how you calculate it, it is the most cost-effective. You can buy it at the largest Unicom business hall in each region.

Licensed, national warranty, no worries. **Also cheaper than parallel imports. If you include the phone bill, it is nearly half cheaper than parallel goods

Resolution, camera pixels, CPU, new system, when I buy it, be careful whether it is renovated, whether there is a dark disease, etcNow Hong Kong licensed 16g is about 5000....It is not recommended to buy parallel goods, there is no guarantee, Apple's standby is comparable to a copycat machine, 3 to 4 days of normal use a day, no problem, if you play the game quickly out of power....If you buy a SIM card, you can only connect with the mainland bank, and you can do it casually with the Hong Kong bank.

To give you some of the easiest way to identify, about parallel goods and licensed goods, you see the Settings-General-About the local model column, if the last two English letters are CH, it is the national bank, if it is zp, it is the Hong Kong bank, and the others are parallel goods.

About the refurbished machine, you can open Settings-General-About This machine Look at the serial number column, the third digit represents the year of manufacture, if you want it now, the third digit must be 0, which represents the 2010 machine, the fourth and fifth digits represent the number of weeks of delivery, and now if you want to buy it, it must be at least 30 weeks later, and generally the factory for more than half a year will not be a new machine.

In addition, you can check the charging port of the mobile phone, if there are scratches and dust, it is definitely not a new machine, and the two screws of the interface to see if there are traces of being unscrewed.

Generally, with the above points, the old machine and the refurbished machine cannot escape.

You can also check on Apple's official website, enter the IMEI number, and it will show whether there is a warranty.

It's all hand-played based on experience.,I hope you can adopt it if it's useful.。。。

Upstairs,Now the new version of the licensed goods and parallel goods all have wifi.,What era are you talking about?。

If you have difficulty finding customer service, Apple customer service: 800-810-2323 directly report the IMEI number of the machine.

There is wifi is definitely not licensed in Chinese mainland, it's as simple as that.

3G is the second generation, 3GS is the third generation, the third generation has more compasses than the second generation, the camera has been increased from 2 million to 3.2 million, the CPU frequency has been increased from 300 to 600, the speed is faster, and the screen is clearer than the second generation! ~