"Samsung has produced many high-quality smartphones and tablets, and recently launched a new high-end smartphone, Samsung Galaxy note. With a large 5.3-inch touch screen, Samsung Galaxy note is the largest smartphone in the world. It blurs the boundary between smartphone and tablet. It has both the lightness of smartphone and relatively large screen, which is more like a mixture of smartphone and tablet. According to different regions, Samsung has launched different 3G and 4G function phones. The galaxy note N7000 obtained this time is a version that supports 3G functions. Let's take a look at the secrets of this unique smartphone in the world.
1.Galaxy Note
Galaxy note will not have the same or different network systems according to the region, and Galaxy note N7000 is a 3G version of smartphone (domestic version is i9220). Unlike 4G version of note, N7000 does not include NFC (near field communication) function.
The main features are:
——Size 146.85 x 82.95 x 9.65mm, weight 178g
——Dual core 1.4GHz exynos processor, 1GB ram, 16GB internal flash storage
——5.3 "WXGA (1280x800) HD super AMOLED touch screen
——8 megapixel main camera, 2 megapixel front camera
——Wi-Fi 802.11 a/b/g/n，BlueTooth3.0+HS
——HSPA+ up to 21Mbps 850/900/1900/2100，GSM 850 / 900 / 1800 / 1900
——Acceleration sensing, gyroscope sensing, electronic compass, proximity sensing, light sensing, barometer
——Global positioning system (A-GPS and GLONASS)
When you open the box, you will be shocked by the large 5.3-inch screen. The accessories include a headset, USB cable, charging plug and battery.
The space of the fuselage is increased, so it is also equipped with a more powerful battery, with a capacity of 2500mah.
Similar to the appearance of Galaxy series mobile phones, the front adopts an integrated screen design, and there is a "home" button in the lower part, which is similar to that of iPhone, but there are two hidden touch buttons on the left and right sides. Corresponding to "menu" and "return" functions respectively.
There is a 2 megapixel front VGA camera in the upper left corner of the screen, and the light and distance proximity sensor is on the left side of the camera.
The back of the phone adopts a thin plastic back cover and a speaker at the lower part
In the upper part, this is an 8 megapixel camera and LED flash, but the camera lens has no protective layer and is easy to be scratched.
Note adopts metal plating on the side, which looks more textured. There is a power / lock screen button on the right,
The left side of the phone is the volume adjustment button.
The bottom of the mobile phone has a currently common micro USB interface, next to a pinhole microphone, and on the far right is a small hole for its unique stylus.
There is a 3.5mm earphone socket and another pinhole microphone on the top edge.
2. Large touch screen
The most attractive thing in Galaxy note is its 5.3-inch super capacitive touch screen, which supports multi touch. It is not only the world's largest smartphone, but also the first time to use Samsung's HD super AMOLED display.
AMOLED (active matrix / organic light emitting diode), that is, active matrix organic light emitting diode panel, is a kind of OLED technology. The structure of AMOLED screen has three layers: AMOLED screen, touch screen panel and the layer of glass protected outside, while Samsung's super AMOLED lacks the middle layer and directly makes the touch sensor on AMOLED. Therefore, the super AMOLED panel is thinner than the AMOLED screen, the touch is more sensitive, and the color is brighter because there is less barrier.
HD super AMOLED is a new super AMOLED Display Technology launched by Samsung. In order to meet the requirements of high definition (hd) format, the resolution reaches 1280x720 or higher. New materials and manufacturing processes are adopted to achieve higher resolution, but HD super AMOLED still adopts the previous pentile pixel matrix (there are two sub pixels on a pixel point). Due to the increase of screen size, its DPI is still greatly improved. Galaxy note is the first product to use HD super AMOLED, with a screen size of 5.29 inches, a color of 16m bits, a resolution of 1280x800 and about 285 DPI.
3. S-pen smart pen
Another major feature of Galaxy note is that it is equipped with a stylus: s-pen smart pen. Since the iPhone became popular with capacitive touch screens, the stylus has been ignored. Samsung's re equipped with the latest technology smart stylus is undoubtedly very attractive for people who are used to keeping notes on their mobile phones.
S-pen adopts electromagnetic induction technology to enable input on the capacitor screen, and wacom is adopted at the same time The company's digital system achieves accurate pressure sensitive input. In other words, when using s-pen, it is a bit like writing with a general pen. Using different forces will display different input results on the screen.
There is also a button on s-pen. When you press this button, you can realize some other functions, such as capturing images. Of course, this needs the support of software.
At present, the system version installed on galaxy note is Android 2.3. Samsung has opened the stylus API to facilitate the development of application software. The stylus will be fully supported in the next version of Android 4.0.
4. Step 1: remove the rear cover
There is a nail cap size gap in the upper right corner of the back of Galaxy note, where the back cover can be easily removed with nails.
Perhaps in order to maintain the thinness of the fuselage, the plastic back cover is very thin. It can be seen that there is no line on the back cover. According to Samsung's official blog, there is NFC (near field communication) antenna on the back cover in the 4G version of Galaxy note.
5. Step 2 remove the frame
Here, the middle frame of the mobile phone is fixed with cross screws, a total of 9. It is very simple to remove all the fixing screws on the back with a small screwdriver.
The screen and the middle frame are fastened together with plastic clips. Insert the nail into the gap between the screen and the bracket, slide along the side, and gently force the frame and the screen apart.
When the frame support is removed, it can be seen that the internal structure is not complex and there is no laminated design.
There are mainly some internal antennas on the frame. The first shrapnel on the upper right is GPS antenna, below it is WiFi and BT (Bluetooth) antenna, and the upper left corner is NFC antenna. The cover of the speaker under the frame.
6. Step 3 remove the antenna module
The lower part is the main antenna module of the mobile phone. The antenna is made at the bottom of the mobile phone to reduce radiation. Loosen the 3 fixing screws at the bottom and remove the antenna module.
This block contains speakers, and the pinhole of a microphone is also opened here.
The following is the auxiliary circuit board with USB interface. One side of it is also pressed under the motherboard, so ignore it for the time being.
7. Step 4 remove the main board
Now remove some cable connectors on the motherboard. Note that there are two fixing screws and the antenna. This antenna is connected to the bottom auxiliary board.
When everything is finished, the motherboard can be easily removed. It is very simple. Note that there are many EMI shielding blocks on it.
8. Step 5 remove the shielding block
All important modules are on this motherboard. Remove the shielding block on it.
First look at the back of the motherboard. Here is the main processor unit.
1) K3pe700b-xxc1, Samsung's Orion exynos 4210 SOC. It contains dual core arm cortex A9, with a speed of 1.4GHz.
Exynos 4210 contains dual core arm cortex A9 with a speed of 1.4GHz. It adopts flip flop (flip chip), and 1GB lpddr2 ram is encapsulated on the processor.
Exynos4210 also integrates arm's own multi-core GPU mali-400 MP. It is the first multi-core GPU in the world that meets the OpenGL es2.0 standard, which can expand the two-dimensional and three-dimensional acceleration performance to the resolution of 1080 pixels.
2) Kmvyl000lm, Samsung's multi chip memory package (MCP), with a capacity of 16GB
3) Max8997, max8997 power management chip (PMIC) of Maxim company.
Smart phones require more and more lightweight, more and more integrated applications (no longer limited to communication) and more durable batteries. Therefore, power management has become a very key link in smart phone design. The power management chip hopes to integrate more circuits, smaller size and provide more voltages.
At the 2011 World Mobile Communication Conference (MWC), Maxim announced the PMIC max8997 that provides power management solution for the handheld platform of Samsung exynos 4210 (s5pc210) system. Max8997 is a power management chip customized by maxim for Samsung exynos 4210 application processor (AP). Maxim, as a long-term partner of Samsung, max8997 is the next generation product of PMIC max8998 (Samsung s5pc110). In order to meet the higher performance requirements of the new processing system, max8997 adopts Maxim's proprietary bcdmos process and the latest technology to achieve higher integration and efficiency.
Unfortunately, as a custom chip, max8997 has no detailed technical details. Maxim has complete solutions and IP in power management. Max8997 integrates various firmware and circuits in a single chip. It adopts WLP package, and the size is only 5.6 x 5.6 x 0.4mm. At present, only some general parameters are known:
——7-way high efficiency step-down converter
——21 Channel Low Dropout Linear Regulator (LDO)
——I2C programming interface
——Battery charging circuit
——Real time clock (RTC), motor driven
——12 channel GPIO, micro USB interface
——Camera flash (LED) drive
4) Pmb9811, identified as Infineon pmb9811 xg626, Intel acquired Infineon wireless processing business and launched Intel XMM 6260 mobile phone processing platform. Pmb9811 is a baseband processor that supports 2G / 3G network communication.
5) Sky77604-11, power amplifier module of skyworks company.
6) Bcm47511iub2g, the navigation module of Broadcom, integrates GPS and GLONASS (Russian GLONASS navigation) global positioning systems.
Turn to the other side of the motherboard.
1) Wacom w8501 LCD driver control chip
2) According to chipworks, fa102748a is a communication module encapsulated and produced by Murata, which mainly includes Broadcom bcm4330. It is an integrated wireless communication single chip, integrating Wi Fi IEEE 802.11 a / B / g / N (MAC / baseband / radio), Bluetooth 4.0 + HS, and FM transceiver.
3) Yamaha ymu823 audio codec sound decoder
4) Audience es305 voice processor
5) According to chipworks, the galaxy note has 9-axis sensors:
——Identification 2139 C3H, St lis3dh 3-axis acceleration sensor
——Identification agd8, St l3g4200d 3-axis gyroscope
——Asahi Kasei AK8975 3-axis geomagnetic sensor (electronic compass) (geomagnetic)
6) Identification 1274 u143 047, estimated as barometer. As reported by chipworks, it should be Bosch bmp180
Pressure sensor.
9. Step 6 remove the main camera
The main camera is also glued to the motherboard. First loosen the cable connector because it is tightly glued and needs to be gently pried off.
The main camera is 8 megapixels and can record 1080p HD video
There is an image processing ISP chip of Fujitsu semiconductor on the camera module, marked as mgb043.
10. step 7 remove the headphone socket
Now there are only some small modules left. First, remove the EMI shielding block at the top, which shields the interference of headphone signals.
Then you can remove the earphone socket. Although there is glue, it is easy to remove without special tools. Earphone socket is a commonly used 3.5mm socket.
It is also connected with a distance proximity sensor.
11. Step 8 remove the front camera
Also under the EMI shielding block, gently remove the front camera, which is also stuck with glue. Take it down slowly and carefully.
The front camera is 2 megapixels and the video format is VGA mode. Connected to the camera is a light sensor.
12. Step 9 remove the auxiliary plate
Now you can take out the accessory circuit board with USB interface connected to the antenna.
This micro USB port supports high speed USB 2.0, and the small micro is on the far right
13. Step 10
The touch screen and the bracket are integrated together. A special tool, hot air gun, is required to remove it.
However, you can see the touch screen control chip used. The identification of the chip is vague, but it can be seen that it is produced by ATMEL company.
Galaxy note supports multi touch. According to the report of chipworks, ATMEL control chip mxt540e should be adopted. Based on 32-bit AVR processor architecture, it supports medium-sized touch screen.
Note that there is a slot in the bracket to put it
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