Voice distortion in xiaomi redmi 4 pro. Budget Prime. Why You May Have Sound Problems

Not so long ago, three smartphones went on sale, which are of great interest to millions of buyers. Of course, we are talking about budget mobile devices ah from the Redmi 4 lineup, each with a unique set of specifications. The weakest and cheapest among all three models turned out to be Redmi 4A, followed by the average Redmi 4, and the most powerful and productive representative of the new line is definitely Redmi 4 Pro (Prime).

For review to the editor site hit the flagship budget smartphone Xiaomi Redmi 4 Pro, which we managed to use for several days and form a full-fledged opinion about it. As expected, the device justified the first impression of it, however, it was not without "jambs", which for someone may turn out to be decisive when choosing a smartphone.

The device comes in a white cardboard box, similar to iPhone boxes. Inside you can find Redmi 4 Pro, a 5W power adapter, a microUSB cable for connecting to a computer and charging, several short instructions in Chinese and, of course, a paper clip to open the tray for a SIM card, where can we go without it. In general, there are no complaints about the packaging, which means that the probability of damage to this smartphone during transportation tends to zero.

Body and first impression

For the first time taking Xiaomi Redmi 4 Pro in hand, you immediately feel that the device is very well assembled. The all-metal case also affects, which, in comparison with Redmi 3, has become a little thicker. The build quality has also improved. If the predecessor of this mobile device could slightly play and creak, then in Redmi 4 Pro there are no such "childhood" illnesses. This, of course, pleases, because it is always nice to have a quality item that you like to use every day.

On the top of the smartphone there is a 3.5 mm audio jack for connecting headphones, and on the bottom there is a microUSB connector and a cutout for speakers. On the side right side there is a volume rocker and an on / off button, also designed to lock and unlock the device. On the left side you can find only a slot for two SIM-cards, instead of one of which you can easily install a memory card up to 256 GB inclusive.

For such an excellent build quality and materials, Xiaomi would definitely like to say a big thank you, since it is almost the only company that collects its budget mobile devices so efficiently and responsibly. Even Apple is worth learning from, as the build quality of the iPhone has been lagging a lot lately.

Specifications

The hardware of the Xiaomi Redmi 4 Pro is at a very decent level for its money. The device is equipped with a 5-inch IPS LCD display with a resolution of 1080 by 1920 pixels, an eight-core Qualcomm Snapdragon 625 (MSM8953) processor with a clock frequency of 2.0 GHz, an Adreno 506 graphics accelerator, a slot for a microSD memory card up to 256 GB, 13 MP main camera with support for video recording in 1080p, 5 megapixel front camera, microUSB connector, as well as 3 GB of RAM and 32 GB of internal flash memory.

The battery capacity of the Redmi 4 Pro is a record 4100 mAh. According to Xiaomi, the device has support for fast charging technology, but which generation is not specified. Among the modules, it is especially worth noting - A-GPS, GLONASS, Bluetooth 4.2, Wi-Fi 802.11 a / b / g / n, as well as an infrared port, which is designed to control consumer and entertainment electronics.

Performance

Since the Xiaomi Redmi 4 Pro (Prime) is based on the Snapdragon 625 processor and 3 GB random access memory, the devices demonstrate a good level of performance even in complex 3D games. So, even in Grand Theft Auto: San Andreas at medium settings, the device produces a stable 30 FPS, which is more than enough for a comfortable game.

Perhaps it would be worth mentioning the indicators of synthetic tests, but we do not see any point in this. Samsung's experience has proven that "in synthetics" a smartphone can be a flagship, but in fact it can constantly slow down. The hardware in Redmi 4 Pro is well balanced, so the smartphone perfectly performs absolutely all everyday tasks.

Let's take a simple example. In the browser Google chrome we opened about 15 tabs, launched WhatsApp and Telegram messengers, turned on music playback, launched the installation of several 1 GB programs from Google play via Wi-Fi, opened the calculator, and also opened about 10 more simple programs starting from file manager and ending with simple notes. As a result, when there were about 20 running programs in the background of Redmi 4 Pro, the device did not slow down and continued to work exactly the same as with one application.

To make the case of Xiaomi Redmi 4 Pro hot, you need to try very hard, but we did not succeed in doing this. Even under maximum load, only a little heat is felt, so when performing everyday tasks, the metal case will always stay cool.

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Xiomi is famous for its inexpensive but fairly high quality product. After all, it is the budget line smartphones Redmi brought the greatest popularity and profit to this company. However, the quality of the product often does not match, but rather exceeds its price in the portable electronics market. With such a rate of development and literally "filling" the entire market of mobile devices with their products, they are replacing the products of other companies that we have long loved.

The sensational Redmi 3C model, which literally captured the sales market and made Xiaomi phones famous all over the world, is already waiting for its successor to come out. Xiaomi smartphone Redmi 4 will be the next step in the development of Xiomi brand electronics. But what can you talk about without detailed review Redmi 4 and comparisons with peers from other popular portable electronics manufacturers?

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Appearance of the device and equipment

The box is standard, very small, without unnecessary details, in white colors, created just in the size of a smartphone. Roomy and budgetary, like the smartphone itself, it symbolizes the modesty and economy of the option you have chosen.

In principle, Xiaomi smartphones do not really pamper users with various design options for their gadgets, and the 4 series was no exception. The seasoned style is presented in black (black), white (white) and gold (gold) colors. That makes it possible for everyone to choose the right smartphone.

The build quality of a monolithic (non-separable) smartphone, back cover which is made of metal, good. The upper part of the rear panel is plastic, for better signal transmission, it is installed tightly and does not creak. There is also a proprietary Mi brand logo, a fingerprint scanner, a camera and a dual flash.

On the right side of the device there are two metal buttons: a power (unlock) button and a volume control. They have a pleasant look and are very convenient when using this smartphone.

The upper part is represented by several important details at once:

• Infrared port (you can control the TV);
• Headphone jack (standard 3.5).

The left and bottom parts have a connector for Charger, two speakers, one of which only outwardly resembles it, but acts as a microphone, a microphone and a SIM card tray.

The front part is represented by the following elements:

• Three touch buttons controls - are not highlighted, as in all economy variants of the Redmi line;
• Sensors - basic and proximity sensor, which provides blocking during conversation and prevents unwanted pressing;
• Speaker - located centrally on the top of the smartphone case;
• Front camera - located in the upper right corner, does not interfere and captures the most convenient range;
• The 5-inch screen is a high-quality and highly detailed display.

The fingerprint scanner is no different from earlier models. It is located on the back of the device, it works well and is pretty fast. It is not inferior in its capabilities to more expensive models.

Xiaomi Redmi 4 screen

The first thing that catches your eye is a black frame around the contour of the display itself. The best option would be to choose a black device that will hide this nuance, but will be somewhat more expensive than other colors due to its popularity.

Comparatively small 5-inch Full HD IPS screen in Xiaomi Redmi fourth with high pixel density and brightness range. So, the resolution is 1920 * 1080, while the pixel density is 443 ppi. It also has a special coating against unnecessary stains on the screen, including prints and greasy marks.

Xiaomi Redmi 4 performance

One of the main advantages of this model is a good and high-quality Qualcomm Snapdragon 625 processor with 8 cores, created by modern technology with a frequency of 2 gigahertz, providing a high-quality and immediate process when using the device.

As for the video, it uses the Adreno 506 accelerator at a maximum frequency of 650 MHz. Allows you to meet the maximum requirements of most popular smartphone applications. It has RAM and built-in memory in 3Gb and 32Gb, respectively.

Excellent performance can be used both during games and in everyday use. It works without slowdowns on complex toys (for example, World of Tanks), which gives it a reason to be called a gaming device for a relatively low cost.

The smartphone is made according to the technological process of 14 nanometers, which will allow avoiding overheating and economically using the battery capacity.

Xiaomi Redmi 4 Pro bypasses the original version in 3Gb RAM and 32Gb internal memory. Now you can safely open 6-7 tabs and not think about constantly slowing down your smartphone. Although the Pro version is aimed at the gameplay, but still, given the volume of MIUI firmware, it will be useful for the average user.

Sound parameters of the gadget Xiaomi Redmi 4

One of the key factors of use is that the phone is equipped with one speaker and the second is a "trick". Sound that is not distorted and pleasant to the ears. The alarm clock and the bell itself are audible loudly and clearly.

High-quality sound comes both from the speaker and through the headphones, especially since they can be customized for a specific person and his characteristics. It's a bit subdued, though, and isn't of the highest quality.

Autonomy 4 series Xiaomi

A 4100 mAh battery will allow you to safely use the gadget for two or more days without recharging. It is also impressive that the first version and the Pro are identical in their autonomy with different performance.

So, you can watch videos on the Internet at maximum rates for more than 9 hours without a break, and use it for Internet surfing for more than 18 hours, which brings it to the top of solutions to problems with autonomy in smartphones.

Internet connection and communication

The hybrid slot allows you to use both two SIM cards and a SIM card with a USB flash drive. Smartphone capabilities also provide stable 4G connectivity and carrier network. We didn’t forget about the navigation system.

Quality network connection stable. Nothing prevents the signal from entering through the housing.

Xiomi Redmi 4 camera review

Standard equipment - 13 megapixel main camera and 5 megapixel front camera - will ensure normal video and photo quality. The only negative is that it will perform its functions efficiently only in daylight.

Produced an excellent budget gadget of the Redmi 4 (4 Pro) line. It will be a good successor and follower of the beloved Xiaomi Redmi 3S both in terms of quality and in building the audience of Xiomi brand customers.

Thus, if there is a desire to change your smartphone to a popular, high-quality and reliable gadget, then Redmi 4 will be the ideal solution in terms of price and quality. for several years a progressive and powerful analogue for a price slightly higher than the standard model.

The price of the Xiomi Redmi 4 is set at $ 105, and the Xiaomi Redmi 4 Pro is $ 133. It is recognized as the best budget smartphone of late 2016 - early 2017. The difference in numbers is small, but this only applies to price. Their capabilities are quite different, and it is worth overpaying $ 28 to arm yourself with modern characteristics and the proven name of the Xiaomi company.

All prices are inclusive of work and spare parts

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Reasons and options for free solutions:

• turn on and off, or restart the phone;
• check if the phone is switched to vibration mode and the sound is not reduced to a minimum;
• if problems with sound have arisen due to a software failure, it is best to reset all settings, along with them the glitch will go away;
• if the sound is very quiet, or intermittently obstructs, try gently cleaning the charging contacts with a toothbrush or toothpick;
• if the sound works in the headphones, but not without them, check the settings. The device may be in headset-activated mode;
• you can try updating the device firmware. Update, or vice versa, roll it back to previous version when everything worked well.

Any repairs = 1200 rubles

We offer a solution to any problem related to sound for one price of 1200 rubles.

That is, without knowing the ultimate cause of the sound problems, you understand how much the repair will cost.

Plus, free diagnostics are waiting for you. Regardless of whether you decide to repair your phone with us or not, diagnostics will cost 0 rubles.

We have also selected landmarks by which, without in-depth diagnostics using special equipment, you can "make a preliminary diagnosis"

• if you hear yourself when you speak, or the interlocutor does not hear you, the microphone is most likely broken;
• quiet sound, you cannot hear the interlocutor, the call does not go through, the speakerphone does not work, or the sound is interrupted - problems in the speaker;
• headphones work alternately, or in one of them there is no sound stably, noise and interference constantly occur, there is no bass, or vice versa, the performer's voices are signs of problems with the headset connector.

Why you might have problems with sound:

• ingress of water, or moisture. In this case, sound problems can only be the “tip of the iceberg”. It is necessary to check the entire device and clean its elements, prevent rust and decay, and also protect the device from a short circuit.
• mechanical damage, wear of parts;
• falling (if falling);
• short circuit, electricity drop;
• exposure to critical temperatures: overwhelming heat, or frost.

These are the most common causes of damage and sound problems.

If any of the above happened shortly before the onset of problems, most likely it was this that became the root cause.

Everyone was waiting for the update of the line of budget phones from Xiaomi with genuine enthusiasm, since it became a real bestseller, and has established itself as the best inexpensive smartphone among others and models of competitors on the market in terms of price / quality ratio.

The fourth Redmi was presented already in 3 versions - super-budget, standard 4 and top-end 4 Pro. In this review, we will take a closer look at Redmi 4 and 4 Pro, as on the most relevant devices. Whereas the 4A is a rather controversial model, since now for the same money you can take the cheaper 3S, which is better than the stripped-down novelty in all respects.

Price and main characteristics

At the start of sales, the declared cost of the Redmi 4 is $ 103, the Pro model is $ 133. If you look closely at these smartphones, you can find more differences than similar qualities. Xiaomi, at the request of the fans, left the processors from Qualcomm in the fourth generation, but the CPUs themselves are different, and the rest of the filling of the devices is also different.

Consider specifications heroes of our review.

The dimensions of the smartphone in both versions are 141 * 70 * 8.9 mm, weight - 157 grams. They are produced in traditional Xiaomi colors cases - black and gray, black and white and gold.

Completion and appearance

Smartphones are delivered in small boxes made of hard white cardboard. The size of the package is small, the phone lies close to its walls, all the complete accessories are neatly folded under the smartphone.

In the kit we get:

• charging adapter;
• USB-C cable;
• clip for the tray with SIM cards.

At first glance, smartphones are twins, the differences are only in the location of the IR sensor on the upper end, however, upon closer examination, one can feel the difference in the painting and the texture of the metal itself. In the older version, it is rougher and more matte, which makes the smartphone feel more expensive. In general, holding the Redmi 4 Pro in your hands is somewhat more pleasant than the standard modification.

The body of both smartphones is made of aluminum, the entire front side is covered with 2.5D protective glass, which has a good oleophobic coating. The front of Redmi 4 practically does not differ from the third version, here are the same backlit touch buttons, the location of the sensor unit, microphone and front camera above the screen.

But the back cover has undergone major changes. The main camera module is now located in the middle of the case, next to it is a double flash, under the camera is a fingerprint sensor. The camera does not stick out from the lid, due to which the optics will not be scratched.

At the bottom of the back cover there is a plastic strip for the antenna; on top, a full-size plastic insert is used, which is almost identical to the color of the case and does not spoil appearance smartphone.

The side ends are made of metal with rounded edges, which makes the phone comfortable to hold in the hand, it does not cut the palm with sharp corners. Everything is done very neatly - chamfers, perforations for the speaker and USB, nothing squeaks or backlash anywhere. For the build quality, the Redmi 4 deserves top marks.

In terms of design, you can only find fault with the huge black frames around the screen, even in its predecessor - 3S, the display bezel was thinner. So if you want the frames not to be conspicuous, you will have to take the smartphone with a black front part.

Screen

The younger version of Redmi 4 is equipped with a Full HD IPS display with a diagonal of 5 inches. The screen is the same as in the previous version of 3S, and it was good there. This resolution is more than enough for 5 inches - the picture is sharp, detailed and sufficiently contrasting. However, the screen turns very yellow, even when set to cold color temperature settings.

In the older version, with a similar display size, the resolution has increased to 1920 * 1080 pixels, which provides a pixel density of 443 ppi. Despite the fact that there is no real need for FULL HD resolution on such a diagonal, fans of high-quality screens should pay extra for Redmi 4 Pro. When comparing "head to head", the screen here is an order of magnitude clearer and more contrast, we also note a more adequate color temperature and more high level maximum brightness.

In general, the display of Redmi 4, given its cost, is a sin to complain about. In addition, it should be borne in mind that, all other things being equal, the autonomy of a smartphone with a lower screen resolution should be slightly higher.

Performance

Both smartphones are powered by Qualcomm processors: the younger model has Snapdragon 430 (8 cores, maximum clock speed of 1.4 GHz) paired with the Adreno 505 video accelerator, while the Redmi 4 Pro version has Snapdragon 625 + Mali 506 (8 cores , frequency 2.0 GHz).

In terms of performance, the 4 Pro unconditionally outperforms the standard version, which has the same processor as the 3S (among the differences, only the RAM speed increased to 800 MHz). In the Pro version, we get not only a more recent processor, but also an increased amount of RAM to 3 GB and more internal memory - 32 versus 16 GB. In the synthetic test Antutu Benchmark, the difference between the results of smartphones is 20 thousand parrots - 62 and 41 thousand points, respectively.

The maximum modification of the smartphone proved to be excellent both in resource-intensive 3D games, where the device warmed up only to 39 degrees and gave out a stable FPS, without drawdowns, and when surfing the Internet - even when 6-7 tabs are opened, they are stored in the cache without any problems, and applications are not are unloaded from the background.

The performance of the younger version of Redmi 4 will be enough for people who do not load the smartphone to the maximum. If you use the device for making calls, instant messengers, surfing the Internet and watching videos, then this is a good choice. However, knowing the gluttony of MIUI, we still recommend overpaying for the 4 Pro for the sake of 3 GB of RAM and a 625 dragon. In games, the difference will be small, but the system itself will be much more stable and, most importantly, you will not face constant unloading of applications from the cache, which the version with 2 GB of RAM suffers from.

Camera

Despite the same resolution and aperture of the main cameras, which deceptively indicates their identity, the camera matrices in the fourth generation of Redmi are used differently. The Redmi 4 Pro has a camera module from Samsung, while the standard version uses a simpler Omnivision matrix. However, in practice, smartphones shoot almost the same way, without looking closely at the cropped photos, the difference can be completely overlooked.

For its price, the quality of the images is quite good. In good lighting conditions, it is pleasing to accurately determine the white balance, which provides natural color reproduction, decent detail and sharpness.

Continuous shooting is not the strongest point of the Redmi 4, the automation often sets the wrong shutter speed, which is why the pictures are blurry. However, there are no problems with shooting static and slow-moving subjects, just as there are no complaints about autofocus with single shooting.

In low light, photos begin to make noise, detail is lost and "soap" appears - these are standard problems for all budget smartphones, so there is nothing critical here. More or less acceptable quality of evening and night shooting is provided by devices that cost 2 times more.

The front camera in both smartphones is represented by a simple 5 MP module. Acceptable image quality can be obtained only in daylight, while in artificial lighting the result is poor.

The HDR mode on both Redmi 4 and 4 Pro is quite slow - processing the image takes at least 3-4 seconds. The standard camera application provides manual settings, you can control exposure compensation, ISO and shutter speed.

Speaker, sound quality

The external speaker for both smartphones is completely identical, therefore, in terms of sound quality and volume, there is parity between the versions of Redmi 4. The sound is comparable to that of the Redmi 3S - the volume margin is not bad, there is even a slight hint of lower frequencies, the sound is clear, without artifacts and distortions.

It is pleasant to watch video content on Redmi 4, the device is even good as a boom box for undemanding listening to music. Calls and alarms thanks to the high maximum volume, you can hear it perfectly.

The sound in the headphones does not cause delight, it is boring and a little muffled, the volume is satisfactory. Complain about the lack of a dedicated audio chip in budget smartphones is not necessary, so we will be content with what we have.

Battery

Both smartphones are powered by 4100 mAh Li-On batteries. By time autonomous work these are one of best smartphones on the market, even with intensive use, they live without problems for two full days. It is surprising that there is no difference in autonomy between the maximum and standard versions, although a more productive device from the same battery usually works less - apparently, the improved optimization of power consumption of the new Snapdragon 625 affected.

When watching YouTube videos at maximum brightness, Redmi 4 lives for 9 hours. Smartphones are fully charged in 2.5 hours, there is also a Qualcomm QC 2.0 fast charging function, but in practice it does not show itself in the best way - the difference between the charging speed in different modes does not exceed 15 minutes. Note that the more modern version of Quick Charge 3 is supported by the 625 dragon, however in Redmi 4 Pro this function not implemented. Hopefully Xiaomi will add it in the next firmware versions.

Communication and Internet

Wireless support for smartphones is identical, except that Redmi 4 is equipped with Bluetooth 4.1, while the Pro version has BT 4.2 with lower power consumption. Both smartphones have hybrid trays for SIM card+ USB flash drive, one radio module and an IR sensor.

The operator's network and 4G Internet smartphones hold as confidently as they synchronize with the Glonass and GPS navigation satellites. In addition to the standard set of built-in sensors, there is a gyroscope and a compass, the NFC module is not provided. Somewhat disappointing is the lack of USB-C support, instead of which the phones are equipped with the usual Micro-USB connector. So, if you need to connect an external device to your smartphone, you will have to use an OTG adapter.

Video review of Redmi 4 and 4 PRO

Competitors, conclusion

Ending Xiaomi review Redmi 4 let's say that both versions of the smartphone turned out to be extremely successful. These are worthy receivers of the bestselling Redmi 3S that will be in great demand in budget segment market. If you want to buy fresh, enough powerful smartphone in a nice package that will have good community support and lots of custom firmwares - Redmi 4 is the uncontested choice.

Should you overpay for the Redmi 4 Pro version? In our opinion, yes - in it better screen, performance and, most importantly, an increased amount of RAM. This is important, since the MIUI shell is very demanding on the amount of RAM and on a standard modification you will constantly face annoying unloading of browser tabs from the cache and closing applications running in the background.

Among the alternatives of the maximum modification of Redmi 4, one can note the old man from Xiaomi who is in general love - Redmi note 3 Pro ( bigger screen, better camera) or the still current Mi4C on the 820th dragon. Among smartphones from other manufacturers, we highlight Le Eco Cool1 (dual camera) and Meizu M3e.

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Literally any smartphone sooner or later has software glitch, the reason for which lies in the firmware of the device. In order to determine the type of breakdown, manufacturers have developed a special menu through which the user can independently diagnose any module of the device and find out what the cause of the problem is.

Today we will introduce you to its main functions on Xiaomi Redmi 4 Pro and Xiaomi Redmi 4x and learn how to enter the engineering menu.

The engineering menu is a hidden menu of gadget settings, which was created with the aim of diagnosing and fixing various problems and errors in the operation of the device. The manufacturer did not place these settings in the standard parameter menu because an inexperienced user can make a mistake, as a result of which Xiaomi Redmi Note 4 will stop calling or playing music. Therefore, we recommend that you be extremely careful so as not to harm the phone and then carry it to service center"brick".

Engineering menu functions:

• Volume and sound in spoken and main speakers;
• Microphone parameter settings;
• Networks and GPS;
• Repair IMEI;
• Camera parameters settings;
• Optimization operating system to reduce battery consumption.

Of course, there are a number of other functions, but these are the most popular.

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How to enter the engineering menu Xiaomi

Below are the two main methods for entering the engineering menu of the phone using the example of Redmi Note 4x. There is also a third, but it involves the installation third party applications and is most often used if the first two are inoperative for some reason.

1. Through the phone parameters. This method is universal and is suitable for almost all models. Xiaomi phones... So go to "Settings - About phone - Kernel version"... Click on this item three times (slowly), and then click twice more if such a message appears. Ready.
2. Using Xiaomi Redmi codes. Open the dialer and enter one of the following code options: *#*#6484#*#* , * # * # 4636 # * # * or *#*#3646633#*#* - some of them will work one hundred percent.

If for some reason none of the methods works, then you will have to resort to the third method, which was described above - to use third-party software. For example, we can recommend programs or MTK Engineering (link to Google Play) that you can install on your smartphone. Let's take a closer look at each of them.

MobileUncle Tools

The most powerful application on this moment, which provides the user with the ability to perform a wider range of operations with the device (although this only works with smartphones based on the MTK chipset).

To start using the application, you need to obtain superuser (root) rights on the phone and give permission to the program to use them. With the program open, click "Engineering Mode" and select the item "Engineering menu (MTK)"... As of today, this app has been removed from Play Market but finding it on the internet is not at all difficult. Since the developer of the program is a Chinese, you can find two versions - in English or in Chinese.

MTK Engineering

This is a fairly popular program among users for entering the engineering menu, which is very convenient and quick to use. After downloading it, open the menu item Android Testing which contains battery and phone information, usage statistics, and Wi-Fi information. To enter the engineering menu, select Engineer Mode.

Outcomes

In conclusion, I would like to warn you that it is better to enter this menu and make changes only when you know exactly what you are doing, otherwise you run the risk of breaking or spoiling something. Good luck!