Nokia Lumia 640 smartphone: specifications and customer reviews
An entry-level smartphone based on Windows 8.1 "with very good technical specifications is the Lumia 640. Its capabilities, as well as all the nuances associated with the operation, will be discussed in detail in this review. Also, a list of pros and cons of this device will be given, starting from which recommendations will be given regarding its acquisition.
Positioning the smartphone
Technical parameters do not allow eventhe middle segment of mobile devices Lumia 640. Reviews in this regard are allocated to the CPU, which is outdated both morally and physically. But do not forget that the operating system "Windows" for mobile gadgets can boast a high degree of optimization. Therefore, in comparison with direct competitors in the person of "Android", requires significantly less hardware resources to ensure its normal functioning. It is this advantage that distinguishes the devices of this software platform against the background of direct competitors. Accordingly, this device is perfect for those who need an inexpensive entry-level device with modest technical specifications, but with an acceptable level of performance. It is this combination that this "smart" phone can boast of. It should also be noted that this smartphone is based on the development of NOKIA, which was absorbed relatively recently by Microsoft Corporation, whose logo was applied to the gadget body.
Device accessories
The configuration of this device is very, very scarce. Smartphone Microsoft Lumia 640 can "boast" such a list of accessories, documentation and components:
- The smartphone itself is equipped with a removable rechargeable battery.
- Charger.
- Warranty card and multilingual instruction manual.
Newly-minted owners of this deviceimmediately have to buy an additional protective film for the front panel, a cover, a memory card, a stereo headset and an interface cable. Without these accessories, it will be impossible to uncover all the possibilities of this "smart" phone.
Appearance and ergonomics
Phone Lumia 640 is a familiar candy bar withsupport touch input. On its front panel is a high-quality 5-inch display, the lower part of which is occupied by a familiar control panel of 3 standard buttons. Accordingly, there are no individual touch buttons on this device. Below just located a black bar on which there are no controls or communications. Above, above the screen, there is a speaker, a manufacturer's logo, a hole in the front camera and a whole set of touch elements. On the left edge of the smartphone are correctly grouped the controls: the "smart" phone lock button and the gadget volume controls. This allows even with such a large display diagonal, like 5 inches, to control it only with the fingers of one hand (in this case right). There are no important elements on the opposite side of the device. The port for wired acoustics is displayed on top. Well, and below - the micro-USB port and the opening of the spoken microphone. On the back cover is the main camera with a single LED backlight. There is also a logo of the manufacturer. There are four options for the design of the case of this device. In addition to the usual white and black, there is also orange and blue. Matte surface of the body only in black, and all the others - with a glossy finish. The front panel of the gadget is protected from possible damage by the "Gorilla Eye" and, of course, the third generation.
Central processing unit
A very modest CPU modelinstalled in Lumia 640. This chip is Snapdragon 400, developed by the leading manufacturer of CPU for mobile gadgets by the company Kualcom. It consists of 4 computational clusters, each of which is based on the energy-efficient architecture "Cortex A7". But at the same time, the required level of performance is achieved by increasing the computational modules. In this case, there are 4 of them, and this is quite enough for the normal operation of multi-threaded applications. The frequency of each core changes dynamically and can reach 1.2 GHz. This processor is manufactured using 28 nm technology. For the latest versions of the "Android" capabilities of this semiconductor crystal is clearly not enough. But "Windows Von" is no longer so demanding on the hardware resources of the mobile device. Accordingly, all the software that is available for this software platform, will go without any problems on such a gadget as the Lumia 640 smartphone.
Display and its characteristics
The usual version of this smartphone is equipped withdisplay with a diagonal of 5 inches. Its resolution is 1280x720, that is, the picture on it is displayed as 720p. The pixel density in this case is equal to good by today's standards of 294ppi. The very same screen matrix is made using the "IPS" technology. This provides excellent color reproduction on this smartphone, as well as an acceptable level of energy efficiency. Another plus of the device is the availability of a special sensor that automatically adjusts the brightness of the touch screen. There is also a more advanced model of this smartphone - Nokia Lumia 640 XL. The difference between these devices is the diagonal of the screen. In this case, it is increased by 0.7 inches and is 5.7 inches. But the resolution of the screen itself has not changed. As a result, on a device with a larger diagonal, the image quality is worse than on the younger model.
Graphic accelerator
Adreno 305 is exactly this model of graphicThe accelerator is installed in Lumia 640. This video accelerator can not boast of a high level of performance. But its main task is to free the CPU from processing graphic information and thereby increase the overall performance of the mobile system. And with this task, he copes superbly. Separately, it should also be noted that this operating system is optimized for "modest" hardware. As a result, we get a completely balanced solution, both from the position of "hardware" and software.
Cameras
Enough high-quality cameras installed in theLumia 640. Their characteristics are not impressive, but this does not mean that it is impossible to get high-quality images with their help. The main camera has a sensor of 8 megapixels. There is a high-quality system of automatic image focusing and a single LED backlight. Also, developers did not forget to equip it with digital zoom. Among other features of this camera, it is necessary to note the BSI sensor and the f / 2.2 aperture number. As a result, the quality of the photo is really excellent, especially for an entry level gadget. This smartphone can record video with an image resolution of 1920x1080. In this case, the picture will be updated 30 times a second. Therefore, with the recording of videos from this smartphone, too, everything is in order. A more modest sensor at 0.9 MP lies at the base of the front camera. But this does not prevent her from recording video in 720p format (that is, calls will be made exactly in the same quality). The autofocus system is not provided for it, but for an average "quality" it is quite enough.
Memory
No censors and memory subsystem in Lumia640. The characteristics of it are really good for such a software platform. The amount of installed RAM is 1 GB. For simultaneous launch of several resource-intensive applications this is quite enough. At the same time, the interface will work smoothly and without glitches. The capacity of the integrated disk drive in this device is 8 GB. Some of them are occupied by the operating system. As a result, without an external drive in the form of a flash card can not do. Its maximum capacity can be 128 GB. The only drawback in this case is that you will have to purchase this accessory separately and for an additional fee. Also, Microsoft Corporation to promote sales of mobile gadgets based on its software platform provides free of charge to customers of this device 30 GB for a period of 1 year on its cloud service OneDrive. As a result, the given parameters of the memory subsystem are quite enough for comfortable and convenient operation on such a device as the Microsoft Lumia 640 smartphone.
Battery and device autonomy
As noted earlier, the battery is removable in Lumia640. Reviews highlight its high enough capacity of 2500 mAh. This, according to the manufacturer, enough for 26 and a half hours of continuous communication in second-generation cellular networks. For 3G, this value is reduced by 6 hours and is already 17.5 hours. If the gadget is used as an MP3 player, then one charge of the battery will last for 86 hours. In idle mode, this device can last 36 days. In reality, the owner of this gadget can expect 2-3 days of battery life at an average load level. With an increase in its time will be reduced to 10-12 hours (this is true for the most demanding games of the latest generation). Well and in the mode of the greatest economy it is possible to count on 5 days of work without additional charge.
Data exchange
By the number of SIM cards installed, thisthe smartphone model can be with 1 or 2 slots for their installation. The last one is called Lumia 640 Dual Sim. Reviews highlights the high quality of work this model with installed two cards. At the same time, no serious problems were found. The device itself can work in any GSM-networks: from 2G to 4G. With all this he has no problems. At the same time, the information transfer rate varies from several hundred kilobits per second to a solid 150 megabit per second. The gadget also supports the most common Wai-Fai standards: b, g, and n. Since the remaining standards a and ac are compatible with the previously mentioned three, there are also no problems with the operation of such wired networks.
Do not forget the developers and about "Bluetooth." In this case it is a question of its 4th version, which allows, in addition to data exchange with similar mobile devices, also to connect to the smartphone a wireless headset. The navigation capabilities of the device are realized with the help of GPS technology. As it was mentioned earlier, it allows using HERE service to determine the location of a gadget even without an Internet connection. In addition, the devices implemented technology A-GPS. It determines the location of the signal from the towers of cellular communications. But at the same time, you must necessarily connect to the Internet. If this method is accurate within the settlement acceptable, then on the track there may be problems. Another important interface is NFC, which allows you to quickly transfer a similar amount of information to a similar device in a matter of minutes. But there are only two wired interfaces in Microsoft Lumia 640. The reviews highlight the high quality of audio received from the audio port. Well, the second interface is a micro-USB, located on the bottom of the smartphone.
Software
Originally installed on this gadgetversion with the number 8.1 of the Windows operating system. Lumia 640 functioned perfectly under its control. But the hardware of this device made it possible to update the system software. As a result, in June of this year there was an update for this model to the 10th version of Windows Phone. A similar upgrade of the software part occurred for the older model - Nokia Lumia 640 XL. But here the level of sale of gadgets of this platform is very modest. To somehow stimulate this process, Microsoft decided to supplement this smartphone with a number of pleasant bonuses. The first of them (it was mentioned earlier) is 30 GB on the cloud service of this company OneDrive for 1 year, and absolutely free. Another plus of this gadget is the pre-installed Microsoft Office Office suite. In addition to it, smartphone owners are also absolutely free to receive a subscription for the year "Office 365". To perform photo editing on the device is preinstalled "Photoshop Express" from "Adob". But the navigational functions of this "smart" phone allows you to perform the mapping service HERE +, developed by the company "Nokia". Its main advantage is the ability to locate without connecting to the Internet. For this, only the GPS signal is used. But to make video calls on this device is preinstalled the most popular product to date - "Skype".
Price
Initially, the phone Microsoft Lumia 640 could bebuy for 223 dollars. But even at that time the device with similar parameters on other platforms was much cheaper. Therefore, after a significant reduction in demand for this gadget, the price dropped to $ 160. Now the cost of the gadget has further decreased and is 150 dollars. A similar price tag entirely corresponds to the software and hardware capabilities of this smartphone.
Owner feedback on the device
In fact, only one significant minusin Microsoft Lumia 640. Reviews highlight the software platform of the gadget. For the time being, the operating system called "Windovs Von" has not been widely used. Therefore, in the entry-level solutions segment, smartphones based on Android still dominate. But, as can be seen from the previously stated material, Microsoft is trying to change the situation in its favor. Especially since everything she needs for this is there. In the rest, the Microsoft Lumia 640 phone is a worthy alternative to any similar gadget from another platform. The software is highly optimized for hardware stuffing. As a result, the system's performance is sufficient for solving any problem. Well, program bonuses are a nice addition.
And what do we have?
If not for the software component, then the Lumia 640 gadget would be out of competition in the budget segment. But still it's a very tempting offer in the entry-level device environment.
