According to exploration firm Idc report shows that inside 2015 the global second-hand mobile phone shipments with 81.3 million, and 2020 will reach 222.6 million, your compound annual growth rate connected with 22.3%. This also means that more and more people will probably choose to use second-hand mobile phone.
The use of second-hand cell phone is indeed a social choice, first is to reduce the environmental pollution with electronic products, second: second-hand expense is much lower than the new appliance. But how can you make sure to receive a very good second-hand phone? Do you concerned with after few days you bought it will eventually stop working?
Here we take a look at the way to distinguish true or bogus iphone:
First, with or without iCloud activation lock
Particularly important! If the purchase of second-hand iphone you can find activation of the lock, the very first can not confirm whether the owner of the seller himself, the second could possibly be the next day the iphone will be directly locked directly to the distant can not be used, so the recognized website of Apple to confirm whether or not the iphone iCloud activation lock, Buying a used iphone with an iCloud activation lock is just not recommended.
Second, the question serial number
Through Apple’s established website or fruit powdered ingredients query and other third-party tools to be sure of the phone serial number of many important information, such as: activation time period, the remaining warranty period, made use of iphone mobile phone box, mobile phone accessories may be fake, so the primary code significance.
IPhone mobile phone serial number determined by the mother board, but the market may be a cheating spouse serial number tampering, but look into the serial number can be said which the first step in the inspection equipment. The Internet will often appear to Taiwan, Korea, Japan, the US version of the serial number into the Country’s Bank of the number of full. Even without the iCloud lock the serial number of the motherboard to write, once the next Brush so that you can re-activate, will once again be iCloud account activation lock can not be activated to help activate the use.
Third, DFU Brush
Get the machine after the planned DFU mode through iTunes absolutely brush machine, is not a authentic machine a test.
Ios DFU mode: Progress Firmware Upgrade, that is, ios firmware forced downgrade mode. If you buy is not a true machine, then in the DFU recovery process may occur the following:
1. Larger than fifteen code can not be recovered.
When you get an error code, you can talk about Apple’s official technical support documentation. If your recovery can not be completed by the actual above-mentioned activation, then this machine is inclined not a real machine.
2. Wash can not be activated after completion.
Brush machine is completed can’t be activated, or obviously wash machine has been confirmed before there is absolutely no iCloud activation lock (refer to reduce costs), brushing machine is motivated to enter a strange Apple ID so that you can activate, then this machine will not be real machine , Or get a new serial number of the machine. Additionally, if it is a card product or foreign contract machine through illegal channels in order to unlock, will not be able to complete the brush machine after the normal activation.
3. Brush in the process of long-term “white apple” program can not continue to the next step.
Given that the connection to the computer’s details cable is original plus normal connection without interruption, laptop network connection is normal, a steps are correct, if repeated try DFU Brush still only appears Apple LOGO but tend to not enter a long time to a higher step, then this machine may well Not a real machine.
Final, hardware testing
Because ahead of time to know that you buy a second-hand mobile phone, so the machine hand to the post, you do not have to look at the phone has no sandalwood flavor, you cannot find any foil what, first determine the machine, fineness, appearance, colour and description is not the picture same.
And then began to test your phone’s hardware, which need to become tested one by one, very time-consuming, where there are some detailed test things may be ignored.
Began to examination the hardware to see if the appearance of the phone fretting hand or burr, the handset as well as speaker mesh is stiched mesh, as if the hint is as good as genuine, and then check the power option, volume keys, mute press button, Home button touch vulnerable and feedback is obvious and not stiff, check whether the dslr camera into the gray or bust.
Appearance part of such a handful of, and then switched to the 2nd stage.
Screen check process: you can download some absolute white, pure black, real green, pure red picture, the brightness of the premier mobile phone backlight point of view whether there may be uneven and bright locations, tilt to see the seeing angle, the edge is not noticeable light leakage.
Touch id is normal: if the fingerprint recognition function is easy and sensitive identification, aim to enter once and un-lock many times.
WIFI is normal cell phone: WIFI link detection is typical and stable signal durability.
Gyro is normal: open the original compass system, a glance.
Camera focus is accessible: you can try to take pictures, macro, and so forth., iphone 6 with phase focus, you can even use the palm of your side try the camera close plus long-range automatic switching speed is usually fast.
Headset is normal: try and insert the headset can be smooth, if the headphone jack can not be employed, there may be damage to the motherboard.
Distance sensor is normal: the phone is usually tested once the cover will likely be off the screen near the mobile and sensitive, a try to understand.
Flash is normal: turn the camera switch to record video function and choose to turn on the pen, pay attention to also observe several models of well-being LED flash are all working properly at the same time, a glance.
Wireless bluetooth is normal: iphone can only match alternative Bluetooth devices but can not necessarily search other iphone, get a Wireless headset to match the connection, a glance.
Micro is normal: open the system is sold with voice memo program, a documenting know
Vibration function frequently occurs: light side of the phone mute button, a glance.
If thez network lock: Turn off the information in the cellular data walking around, built-in card machine may not be shut after the closure of the Web.
Note: If an application named “Qcard” should be an internal card sticker.
There’s no disassemble: This will need to take apart to judge their own, mainly relies on whether the internal water test out paper intact, there is no noticeable motherboard repair or “flying line” welding traces.
Accessories: This is particularly important, if the retailer told you that comes with the original Apple extras, then you have to take a good go through the power adapter inside the serialized number is clear, whether the produced fonts and other original font line, the data line user interface copper is neat Burrs and also corrosion marks. Apple’s original settings (data cable, power adaptor, headset) is still very expensive, towards profiteers left a new multi-barreled new business, our recommendation is that users use the original or even with Apple’s official MFi certified accessories, or may appear in the future Problems for the motherboard can not be energized or accelerated battery loss the result of automatic shutdown restart and the like.
Note: General second-hand mobile phones are not original apple accessories or statements, because, after all, second-hand equipment, traders sell either when these products are too old, or is shed lost. So buy second-hand cell phone are basically bare metal.
In case the average user to check a great deal of has been quite easy, and should be capable of avoid most of the problem device.
Finally, I wish you a joyful purchase!