Overview LG US991Z(LGUS991Z) aka LG G4

Specification LG US991Z(LGUS991Z) aka LG G4

Model and Features
Model LG US991Z
Series LG G4
Release Date June, 2015
Depth 9.8 mm (0.39 in)
Size (width x height) 76.1 x 148.9 mm (3.00 x 5.86 in)
Weight 155 g (5.47 oz)
Operating System Android 5.1 (Lollipop)
Hardware
CPU 1820 MHz ARM Cortex-A57,1440 MHz ARM Cortex-A53,
CPU Cores Hexa-core
RAM Memory 3GB
Internal Storage 32GB
External Storage microSD, microSDHC, TransFlash, microSDXC up to 32 GB
Network and Data
Number of sim slots 1 Micro-SIM
2G network GSM 850/900/1800/1900 MHz
3G network CDMA 800 1900 MHz/UMTS 850 900 1900 2100 MHz
4G network LTE 700 (B12), LTE 700 (B13), LTE 700 (B17), LTE 850 (B5), LTE 1700/2100 (B4), LTE 1900 (B2), LTE 1900 (B25)
5G network -
Data GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, cdmaOne, CDMA2000 1xRTT, CDMA2000 1xEv-DO Rel. 0, CDMA2000 1xEv-DO Rev A, LTE, LTE-A
Display
Screen size 5.5 in (~73% screen-to-body ratio)
Display Type IPS TFT LCD
Display Resolution 1440 x 2560 pixels (~537.5 ppi pixel density)
Display Colors 16M colors
Battery and Keyboard
Battery Capacity Removable Li-Ion 3000 mAh
Physical keyboard -
Interfaces
Audio output 3.5mm jack
Bluetooth version 4.1, A2DP
DLNA Yes
GPS Yes, with A-GPS, GLONASS, Geotagging, S-GPS, QuickGPS
Infrared port Yes
NFC Yes
USB microUSB 2.0 , USB charging, USB Host, USB OTG 1.3, USB power supply
WiFi Wi-Fi 802.11 a/b/g/n/ac

Firmwares LG US991Z(LGUS991Z) aka LG G4

LG Phone firmwares regions descriptions

Manual LG US991Z(LGUS991Z) aka LG G4

How to Factory Reset through code on LG US991Z(LGUS991Z) aka LG G4 ?

  1. Turn on the phone.
  2. Open phone's Dialer.
  3. Enter one of the proposed codes:  3845#*991# or 277634#*# or *#546368#*991#.

    Menu LG US991Z(LGUS991Z) aka LG G4

  4. Confirm your actions by open "SVC Menu" or "Hidden Menu".

    Reset settings LG US991Z(LGUS991Z) aka LG G4

  5. Then select  " Factory Reset " (R&D Only).

    Factory data reset LG US991Z(LGUS991Z) aka LG G4

  6. Finally press "OK".

    Dellete ALL LG US991Z(LGUS991Z) aka LG G4

  7. The hard reset is completed now. 
  8. As a result of these actions, the memory of your phone cannot be restored.

How to Hard Reset on LG US991Z(LGUS991Z) aka LG G4 ?


Type 1:

Hard Reset keys Type 1 LG US991Z(LGUS991Z) aka LG G4

 

Type 2:

Hard Reset keys Type 2 LG US991Z(LGUS991Z) aka LG G4

 

Type 3:

Hard Reset keys Type 3 LG US991Z(LGUS991Z) aka LG G4

 

  1. Turn off the phone.
  2. Next press and hold the Power key and Volume down key for ten seconds.
  3. Release the power key while holding down the volume key.
  4. Next press the power button again.
  5. After these actions, the Factory Reset menu will appear on the screen.

    Type 1:

    Android system recovery Type 1 LG US991Z(LGUS991Z) aka LG G4

    Type 2:

    Android system recovery Type 2 LG US991Z(LGUS991Z) aka LG G4

  6. Use the Power key and Volume key to confirm the process.
  7. The hard reset is completed now.
  8. As a result of these actions, the memory of your phone cannot be restored.

How to Factory Reset through menu on LG US991Z(LGUS991Z) aka LG G4 ?

  1. Open the Main Menu.
  2. Go to "Settings".
  3. In Settings choose "General".

    Menu LG US991Z(LGUS991Z) aka LG G4

  4. In General select "Backup & Reset".

    Backup & Reset LG US991Z(LGUS991Z) aka LG G4

  5. Next, clik on "Reset Phone".

    Reset device LG US991Z(LGUS991Z) aka LG G4

  6. Confirm by clicking  "Erase Everything".

    Erase everything LG US991Z(LGUS991Z) aka LG G4

  7. Finally, press "OK".

    Reset LG US991Z(LGUS991Z) aka LG G4

  8. The hard reset is completed now. 
  9. As a result of these actions, the memory of your phone can not be restored.

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