1, new machine/refurbished machine (query activation time):
For the brand-new Bank of China iPhone, the first boot of the new machine requires an activation process. After activation, Apple begins to calculate your phone warranty. The activation time plus 1 year is the expiration time of your equipment warranty. Due to time difference, there may be a deviation of 1-2 days, which is normal.
The parallel iPhone may be activated in advance because it has passed the customs. Generally, the difference between activation time and purchase time will be about half a month-1month.
2, Apple demon machine and black machine
Due to China's special national conditions and strong demand for iPhone, some black industrial chains have emerged, and so-called black machines and demon machines have appeared.
The so-called demon machine is that the profiteer modifies the serial number, IMEI and model of the mobile phone by modifying the chip of the mobile phone font, so that the original factory locks the machine and pretends to be the Hong Kong version or the Bank of China, and sells the price of the Hong Kong version or the Bank of China. Because the modified serial number and other information are official and consistent with the appearance, capacity, network standard and other information of your mobile phone, it is impossible to know whether it is a demon machine by looking at the serial number.
Only by brushing the machine, this machine may have a 3 194 error about three-quarters or two-thirds of the time, and it is impossible to upgrade the firmware. Therefore, the machine after brushing is also facing the risk of "changing bricks".
The so-called "black machine" means that profiteers sell the old machine (or the replaced motherboard) that is replaced by a new one through some channels. Because this machine has been replaced by a new machine or an official machine after sales registration, the serial number will be replaced by a new machine and the official serial number will be cancelled. When inquiring, it is often prompted that the serial number is invalid or has been replaced. Therefore, it is relatively simple to identify the black machine, just query the serial number.
Therefore, when you buy an iPhone, you must choose a reliable business to avoid being deceived.
3. shanzhai machine
Wechat replies to the word detect, and then clicks detect your device to automatically judge whether your mobile phone is a fake mobile phone.
Enter the detection page. If it shows that your device is an Apple device, your mobile phone is not a fake.
Step 3 guarantee
IPhone/ iPad/ iPod touch/ includes accessories with a warranty period of 1 year. According to the specific fault situation, replace a single fault component or provide a replacement product. The replaced iPhone and components are brand new (basically official). The replacement iPhone enjoys the recalculated 1 year warranty period (only applicable to Bank of China). The replaced parts and accessories enjoy the remaining period of the original 1 year warranty period or the 90-day warranty period, whichever is longer.
Second, check the phone version.
Apple products (iPhone/iPad/MacBook, etc. ) It is sold all over the world, so different countries will have different models.
In "Settings-General-About this machine", the last letter in the model column represents the country where the mobile phone is sold. CH— Bank of China, ZP— Hong Kong Bank, LL— American version, X— Australian version, F— French version, ZA— Singaporean version, B— British version, DN— German version, J— Japanese version, KH— Korean version, C— Canadian version and IP— Italian version. Similarly, iPad and MacBook also apply.
[background color = rgba (255 255,255,255,0.298039)] iii. Explanation of 2/3/4G Concept
GSM: Mobile, Unicom 2G
CDMA: telecom 2G
W-CDMA: Unicom 3G (also international)
TD-SCDMA: Mobile 3G (independent research and development)
CDMA2000: Telecom 3G
TD-LTE: Mobile, Unicom and Telecom 4G (different frequency bands)
FDD-LTE: China Unicom and Telecom are the mainstay.
How do you know what kind of network your mobile phone supports?
There are many models and versions of iPhone. To know which version your phone supports in detail, you can check your phone model on the back of your phone, which is represented by Axxx (xxxx stands for four digits).
Because there are many versions and models, I won't list them here. According to the model, you can go to Baidu to find out the network types supported by mobile phones.
Fourth, the basic concept of iPhone
1, telephone support
Telephone support is also the most frequently asked question by Apple "Xiaobai" users. Many friends who used the iPhone for the first time asked me, "Why did my phone support expire? Can't I make a phone call? " Hehe, of course not?
Telephone support means that within 90 days after the device is activated, Apple will provide free telephone support for the basic setup, installation, assembly and connection of the device. Don't worry about this, it doesn't make sense. Call Du Niang when you have time and you will know the answer.
2. Apple official customer service phone number
400-666-8800
3, official turnover machine
The official refurbished machine refers to the official refurbished machine. Generally speaking, the activation time will be earlier than the production time. It consists of mobile phones returned by previous users due to quality problems or evaluation models used. After recycling, the manufacturer will repair or replace the parts for the second time and then reassemble them into brand-new products. Generally, the official turnover is equivalent to changing the machine after sale.
Five, iPhone common fault analysis
1, sound problem
(1) If you encounter audio problems when using a specific application, please try testing other applications to see if the problem still exists.
(2) Make sure that the speaker is not blocked by dust. If it is blocked, it can be cleaned with a clean and dry soft brush.
(3) Please try to restart the iPhone.
(4) customer service for maintenance.
2, mobile phone running fever
In fact, it is normal for the iPhone to get hot. I've seen the temperature of the iPhone rise to 50 degrees before. If this happens, I can try to stop using the phone, take off the protective case and put the phone at a suitable temperature to dissipate heat. If the burning problem still exists, I can try to refresh my phone or go to Apple Customer Service to check and repair it.
3. forget the APPLE ID password.
If you accidentally forget your APPLEID and password, you can try to consult Apple Customer Service, which will guide you how to operate it. Of course, the premise is that you must remember the password prompt questions and answers. Therefore, when setting, you must choose the questions you are most familiar with.