Skip to content

LG K31 (K300QM) vs LG Optimus F3Q (D520)

Side by side comparison between LG K31 vs LG Optimus F3Q phones, differences, pros, cons and full specifications. What's the better?

,
5.7"
IPS

720x1520

13
MP

5mp

2GB
RAM

Octa-core

3000
mAh

(Non removable)

vs
05Points LG Optimus F3Q (D520) Compare LG K31 X
4"
IPS

480x800

5
MP

0.3mp

1GB
RAM

Dual-core

2460
mAh

(Removable)

What's the better phone? LG K31 (K300QM)

The phonemore's choice is much more technical than personal. Therefore, you shouldn't only consider this. Our goal is to help you, but what's important to us may not be important to you. You decide which one is the best! Comment!

K31 (K300QM)} 20 Advantages LG K31 (K300QM) vs Optimus F3Q (D520)} 5 Advantages LG Optimus F3Q (D520)
+2GHz 64bit Octa-core (12nm)143%
More powerful processor, you can open your applications faster
vs1.2GHz 32bit Dual-core
+2GB LPDDR3100%
More RAM memory. Typically more responsive and better for multitasking.
vs1GB LPDDR2
+32GB (17GB available)16 times
More internal storage for applications and files
vs4GB (1GB available)
+Until 512GB microSD, microSDXC15 times
More external storage for files using memory cards
vsUntil 32GB microSD, microSDHC
+146 grams (5.11 ounces)10%
Lighter
vs160 grams (5.6 ounces)
+8.6 millimeters (0.34 inches)63%
Thinner
vs14 millimeters (0.55 inches)
+720x1520 pixels185%
Higher resolution screen
vs480x800 pixels
+295 PPI27%
Crisper display of text, images and videos because it has more pixels per inch (ppi)
vs233 PPI
+5.7"43%
Larger screen
vs4"
+(dual camera) 13MP + 5MP3 times
Higher resolution main camera
vs(back) 5MP
+HDR photo on both camerasAdvantage
The HDR technology produced photos with more detail in dark areas
vsHDR photo only main camera
+(front) 5MP15 times
Higher resolution secondary camera to take pictures and selfies
vs(front) 0.3MP
+(front) Full HD (1920x1080)6 times
More image quality for recording videos with the secondary camera
vs(front) VGA (640x480)
+Android 10Advantage
Android 10 is newer and safer
vsAndroid 4.1.2 Jelly Bean
+(4G LTE) 150 Mbps50%
Faster for surfing the internet and download files
vs(4G LTE) 100 Mbps
+Fingerprint sensor (rear-mounted)Advantage
Sensors help you use the device
vsNot supported
+3000 mAh22%
Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use
vs2460 mAh
+5.0 + A2DP/LEAdvantage
Bluetooth 5.0 + A2DP/LE is newer and faster
vs4.0 + A2DP
+Panda King GlassAdvantage
Protection against scratches on the screen lets you carry your phone with your keys
vsNot supported
+MIL-STD-810G military certifiedAdvantage
Protection against water allows you talk to your friends in the rain, for example
vsNot supported
Not supportedvs+Ambient light sensorAdvantage
Sensors help you use the device
Not supportedvs+Proximity sensorAdvantage
Sensors help you use the device
Li-Ion: lithium-ion (Non removable)vs+Li-Ion: lithium-ion (Removable)Advantage
Removable battery can be replaced easily
Not supportedvs+DLNAAdvantage
With DLNA technology you can access and play media files on TV, tablet or DLNA compatible device.
Not supportedvs+NFCAdvantage
NFC allows you to make payments by approach quickly and securely

15 Common items in both devices
TFT IPS LCD
16 million
LED flash
Only digital zoom
PDAF: phase detection autofocus / Autofocus
Full HD (1920x1080)
4G LTE
+8 specs and more in the table below

Check the comparison table below for more items that are not evaluated in comparison score above.

Highlight differences Clear highlight

📱 Model features

LG K31 (K300QM)LG Optimus F3Q (D520)
 
ModelK31 (K300QM)Optimus F3Q (D520)
Other model namesLG K31 (Unlocked), LMK300QMAUSASV, LM-K300QT-Mobile LG Optimus F3Q 4G LTE, LG FX3, LG D520
Country or region availableUSA
USA
feature not registered
BrandLGLG
Release date8/21/20201/1/2014
Depth8.6 millimeters (0.34 inches)14 millimeters (0.55 inches)
Size (width x height)71.12 x 147.83 millimeters (2.8 x 5.82 in)64.8 x 121.9 millimeters (2.55 x 4.8 in)
Weight146 grams (5.11 ounces)160 grams (5.6 ounces)
Build, materialsPlastic body, glass frontfeature not registered
Protection against water and othersMIL-STD-810G military certified: salt, dust, humidity, rain, vibration, solar radiation, transport and thermal shock resistant.Not supported

📲 Display

LG K31 (K300QM)LG Optimus F3Q (D520)
Display typeTFT IPS LCDTFT IPS LCD
Screen size5.7" inches4" inches
Screen-to-body ratio~77.1% (screen-to-body ratio)~57.7% (screen-to-body ratio)
Display resolution720x1520 pixels (19:9)480x800 pixels
TouchscreenCapacitive MultitouchCapacitive Multitouch
Pixel density (dot pitch)295 PPI233 PPI
Colors16 million16 million
Scratch-resistant glassPanda King GlassNot supported
Refresh rate60Hzfeature not registered
Display featuresNot supportedfeature not registered

🤖 Operating System

LG K31 (K300QM)LG Optimus F3Q (D520)
System versionAndroid 10Android 4.1.2 Jelly Bean
Firmware updatefeature not registeredfeature not registered
User Interfacefeature not registeredfeature not registered

⚙️ Processor

LG K31 (K300QM)LG Optimus F3Q (D520)
Chipset64bit: MediaTek Helio P22 (MT6762) (12nm)32bit: Qualcomm Snapdragon 400 MSM8930
CPUOcta-core, 2 processors:
4x 2GHz ARM Cortex-A53 (Quad-core)
4x 1.5GHz ARM Cortex-A53 (Quad-core)
Dual-core, 1 processor:
2x 1.2GHz Krait 200 (Dual-core)
GPU graphical controllerPowerVR GE8320 (650MHz)Qualcomm Adreno 305
Performance (benchmark)feature not registeredfeature not registered

💽 Memory and storage

LG K31 (K300QM)LG Optimus F3Q (D520)
RAM memory2GB LPDDR31GB LPDDR2
Internal storage32GB (17GB available)
eMMC 5.1
4GB (1GB available)
External storageUntil 512GB microSD, microSDXC
(dedicated slot)
Until 32GB microSD, microSDHC
(dedicated slot)

📶 Mobile networks

LG K31 (K300QM)LG Optimus F3Q (D520)
Dual-SIMNot supportedNot supported
SIM card1 slot (Single-SIM)
nano-SIM (4FF)
1 slot (Single-SIM)
Standard mini-SIM (2FF)
Maximum Download / Upload150/50 Mbps100/50 Mbps
Network technology2G, 3G, 4G2G, 3G, 4G
Frequency, bands Expand band details Collapse details
GSM MHz bandQuad-Band 850/900/1800/1900Quad-Band 850/900/1800/1900
Primary 2G networkCDMA 800/1900, GSM 850/900/1800/1900GSM 850/900/1800/1900
Primary 3G networkCDMA2000 1xEV-DO
UMTS 850/900/1700/1900/2100
UMTS 850/1700/1900/2100
Primary 4G networkLTE Cat4 (2, 4, 5, 12, 13, 25, 26, 66, 71)
TD-LTE (41)
LTE 700/1700/1900/2100
Primary 5G networkNot supportedNot supported
Primary data networkGPRS, EDGE, CDMA2000 EV-DO Rev 0, CDMA2000 EV-DO Rev A, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTEGPRS, EDGE, UMTS, HSDPA, HSUPA, LTE
Secondary 2G networkNot supportedNot supported
Secondary 3G networkNot supportedNot supported
Secondary 4G networkNot supportedNot supported
Secondary data networkNot supportedNot supported

📷 Camera

LG K31 (K300QM)LG Optimus F3Q (D520)
Back camera (main camera)(dual camera)
13 megapixels
5MP ultrawide f/2.2120°1/5.0"1.12µm
5 megapixels
Main camera resolution4128x3096 pixels2560x1920 pixels
Video recording (primary)Full HD (1920x1080) 30 fpsFull HD (1920x1080) 30 fps
FlashLED flashLED flash
Focal aperturef/1.8 (aperture)feature not registered
Focal length27mm lensfeature not registered
Sensor size1/3.1" inchesfeature not registered
Pixel size1.12µm pixelfeature not registered
AutofocusPDAF: phase detection autofocusAutofocus
Touch focusSupportedSupported
Image stabilizationEIS: Digital stabilizationfeature not registered
ZoomOnly digital zoomOnly digital zoom
Face/smile detectionFace detection, Smile detectionFace detection, Smile detection
BSI sensorNot supportedNot supported
HDRHDR photo on both camerasHDR photo only main camera
Camera extrasfeature not registeredfeature not registered

📸 Front camera

LG K31 (K300QM)LG Optimus F3Q (D520)
Front camera (secondary)5 megapixels0.3 megapixels
Front camera resolution2560x1920 pixels640x480 pixels
Video recording (secondary)Full HD (1920x1080)VGA (640x480)
Front flashNot supportedNot supported
Focal aperturef/2.2 (aperture)feature not registered
Focal length24mm lensfeature not registered
Sensor size1/5" inchesfeature not registered
Pixel size1.12µm pixelfeature not registered

🔉 Sound and multimedia

LG K31 (K300QM)LG Optimus F3Q (D520)
LoudspeakerSupportedSupported
Active noise cancellation2 microphones or moreNot supported
RadioNot supportedNot supported
TVNot supportedNot supported
Video formatsMP4, H.265, H.264, H.263, XviD, MKVMP4, DivX, H.264, H.263, WMV
Audio formatsMP3, WAV, WMA, eAAC+, FLACMP3, WAV, WMA, eAAC+, FLAC

🔌 Connectivity

LG K31 (K300QM)LG Optimus F3Q (D520)
USBMicroUSB 2.0MicroUSB 2.0
Audio output3.5mm jack3.5mm jack
TV outputNot supportedNot supported
Bluetooth5.0 + A2DP/LE4.0 + A2DP
WiFi802.11 b/g/n [wifi4] (2.4GHz)
WiFi Direct, hotspot
802.11 b/g/n [wifi4] (2.4GHz)
DLNANot supportedSupported
GPSA-GPS, GeoTaggingS-GPS, GeoTagging
NFCNot supportedSupported
Infrared portNot supportedfeature not registered

🧭 Sensors

LG K31 (K300QM)LG Optimus F3Q (D520)
SensorsAccelerometer
Fingerprint sensor (rear-mounted)
Accelerometer
Ambient light sensor
Proximity sensor
Vibrating alertSupportedSupported

🔋 Battery

LG K31 (K300QM)LG Optimus F3Q (D520)
Battery typeLi-Ion: lithium-ion (Non removable)Li-Ion: lithium-ion (Removable)
Battery capacity3000 mAh2460 mAh
Charger, wattsWired chargingWired charging
Inductive / wireless chargingNot supportedfeature not registered
Talk time autonomy11 hours15 hours
Standby528 hours (22 days)360 hours (15 days)

➕ Other features

LG K31 (K300QM)LG Optimus F3Q (D520)
Call controlVoice dialing, Voice recorder, Voice commandsVoice dialing, Voice recorder
MessagingSMS (T9), MMS, E-mail, Push mailSMS (T9), MMS, E-mail, Push mail
Hands-free callingSupportedSupported
Video callingSupportedSupported
RingtonesPolyphonic and customizedPolyphonic and customized
Web browserHTML, XHTML, HTML5HTML, XHTML, HTML5
AntennaInternal antennaInternal antenna
Qwerty physical keyboardNot supportedRetractable QWERTY keyboard
Miscellaneous• Colors: Silver
• LG UX 9.1
• Colors: Blue
• T-Mobile TV
• Quick MEMO
• HAC M3/T3
• WiFi hotspot
• Java framework

☢️ Radiation rate

LG K31 (K300QM)LG Optimus F3Q (D520)
SAR 1.6W/kg (USA, Mexico, etc.)0.61W/kg (head), 1.13W/kg (body)feature not registered
SAR 2W/kg (Europe, UK, etc.)feature not registeredfeature not registered
X

We use cookies to provide and improve our services. By using our site, you consent to cookies. See more details: Privacy policy.