doc:appunti:hardware:kingelon_g9000
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doc:appunti:hardware:kingelon_g9000 [2014/11/08 21:42] – [MT65xx Preloader] niccolo | doc:appunti:hardware:kingelon_g9000 [2017/11/17 12:27] (current) – [The Android System Recovery menu] niccolo | ||
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* mmcblk0p7 2416640 blocks (**2.3 Gb**) mounted as **''/ | * mmcblk0p7 2416640 blocks (**2.3 Gb**) mounted as **''/ | ||
* mmcblk0p8 4058112 blocks, (**3.9 Gb**) mounted as **''/ | * mmcblk0p8 4058112 blocks, (**3.9 Gb**) mounted as **''/ | ||
+ | * Display: 1080 x 1920 | ||
* Operating system: Android 4.4.2 | * Operating system: Android 4.4.2 | ||
* Kernel: 3.4.67 | * Kernel: 3.4.67 | ||
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- Power-off the phone and detach any USB cable. | - Power-off the phone and detach any USB cable. | ||
- | - Keep pressed the **volume + button** while pressing the **power button**. | + | - Keep pressed the **Volume UP button** while pressing the **power button**. |
- Release the buttons, after the Welcome logo you get the broken Android icon. | - Release the buttons, after the Welcome logo you get the broken Android icon. | ||
- Press the **power button once**, you get the menu. | - Press the **power button once**, you get the menu. | ||
**WARNING!** **There is a bug** in the Recovery, buttons does not work as stated: | **WARNING!** **There is a bug** in the Recovery, buttons does not work as stated: | ||
- | * To **navigate** the menu use only the **volume - button** | + | * To **navigate** the menu use only the **Volume Down button** |
- | * To **select** the menu item use the **volume + button** | + | * To **select** the menu item use the **Volume Up button** |
* The power button does not work, it just hide/show the menu | * The power button does not work, it just hide/show the menu | ||
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- Enable **USB debugging option** on the phone (// | - Enable **USB debugging option** on the phone (// | ||
- | - Connect the device using the USB cable, go to the //Control Panel//, //Device Manager//, you will see the **MT65xx Android Phone** with the yellow exclamation mark. Install the **Android ADB Interface** drivers. | + | - Connect the device using the USB cable, go to the //Control Panel//, //Device Manager//, you will see the **MT65xx Android Phone** with the yellow exclamation mark. Install the **Android ADB Interface** drivers. |
- **Detach** the USB cable. | - **Detach** the USB cable. | ||
- **Install VRoot 1.7.9** and run the program (just say Yes, Yes, ... Next, Next, ... the **'' | - **Install VRoot 1.7.9** and run the program (just say Yes, Yes, ... Next, Next, ... the **'' | ||
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The back camera takes pictures at about 13 Mpixels (4160 x 3120). While colors are quite satisfying, the quality is poor indeed. With default settings in good light conditions, **the noise** in midrange shadows is rather visible, **compression artifacts** are also annoying. It seems also that some sort of sharpening filter is applied automatically: | The back camera takes pictures at about 13 Mpixels (4160 x 3120). While colors are quite satisfying, the quality is poor indeed. With default settings in good light conditions, **the noise** in midrange shadows is rather visible, **compression artifacts** are also annoying. It seems also that some sort of sharpening filter is applied automatically: | ||
+ | |||
+ | ===== Headset connector ===== | ||
+ | |||
+ | The provided headset has a 3.5 mm jack with 4 poles (TRRS), but is has a **non-standard length**. I tried some other headsets, but they are not recognized: no " | ||
+ | |||
+ | The pinout seems to be iPhone-like: | ||
+ | |||
+ | Someone reported that [[https:// | ||
+ | ===== Networking ===== | ||
+ | |||
+ | This is the state with data connection enabled, WiFi disabled: | ||
+ | |||
+ | < | ||
+ | root@706v92_jbla_fhd:/ | ||
+ | 1: lo: < | ||
+ | link/ | ||
+ | inet 127.0.0.1/8 scope host lo | ||
+ | inet6 ::1/128 scope host | ||
+ | | ||
+ | 2: ifb0: < | ||
+ | link/ether 46: | ||
+ | 3: ifb1: < | ||
+ | link/ether b6: | ||
+ | 4: tunl0: < | ||
+ | link/ipip 0.0.0.0 brd 0.0.0.0 | ||
+ | 5: sit0: < | ||
+ | link/sit 0.0.0.0 brd 0.0.0.0 | ||
+ | 6: ip6tnl0: < | ||
+ | link/ | ||
+ | 7: ccmni0: < | ||
+ | link/ether 5a: | ||
+ | inet 10.200.148.163/ | ||
+ | 8: ccmni1: < | ||
+ | link/ether 2a: | ||
+ | 9: ccmni2: < | ||
+ | link/ether ba: | ||
+ | </ | ||
+ | |||
+ | < | ||
+ | root@706v92_jbla_fhd:/ | ||
+ | default via 10.200.148.163 dev ccmni0 | ||
+ | 10.200.148.163 dev ccmni0 | ||
+ | </ | ||
+ | ===== Charging problem: disassembling the G9000 ===== | ||
+ | |||
+ | After three months of use, the phone started suffering from **charging problem**. | ||
+ | |||
+ | Sometimes **the orange LED did not light-up** when the power adapter was plugged; sometimes a crazy loop of messages //charger plugged// - //charger unplugged// begun, which can result in phone crash. Sometimes, when the phone was plugged for the nightly charge, the orange LED turned on, but the morning after the phone was completely discharged ad the LED was off. Sometimes applying a light force to the USB connector (blending it toward the back of the phone) seemed to help, but everything was extremly unreliable. | ||
+ | |||
+ | It was not a cable or connector problem, it turned out that the power connector required a **soldering reflow**. Fortunately only a partial disassemble of the phone was required: just removing the **back frame** you can detach the **power board**. | ||
+ | |||
+ | {{.: | ||
+ | {{.: | ||
+ | {{.: | ||
+ | |||
+ | Remove the 10 screws which keep the back frame. Divaricate the metal-plated frame from the screen glass using your thumb' | ||
+ | |||
+ | The **power board** at the bottom is secured with a single **screw**. Before removing it, detach the **antenna cable** and pull the **vibrator** out from its seat, where is secured with some adhesive. | ||
+ | |||
+ | {{.: | ||
+ | {{.: | ||
+ | {{.: | ||
+ | |||
+ | Now you can rotate the power board and see the **flat connector**. The **white piece of plastic** keeps the connector locked-in: flip it, so the connector is released. | ||
+ | |||
+ | {{.: | ||
+ | {{.: | ||
+ | |||
+ | Now the power board is free and you can reflow the soldering. I put very little **soldering flux** over the contacts, a bit of **tin** (a good **silver-alloy**) on the soldering iron. I used a 2 mm soldering tip, larger than the contacts, so I used very few tin for a very short time. Clean the flux with a needle, **cotton swab and alcohol**; inspect closely to avoid short-circuits. | ||
+ | |||
+ | After some days of use, it seems that **the charging problem is solved**. | ||
===== Link ===== | ===== Link ===== | ||
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* [[http:// | * [[http:// | ||
* [[http:// | * [[http:// | ||
+ | |||
+ | ---- | ||
+ | |||
+ | < |
doc/appunti/hardware/kingelon_g9000.1415479367.txt.gz · Last modified: 2014/11/08 21:42 by niccolo