LG K30 vs Samsung J7 Star vs J7 Prime – A detailed Comparison

LG K30 and Samsung J7 Star were released near about the same time in Mid 2018. J7 Star is a successor to J7 Prime which came in 2017.

J7 series is one notch higher than LG K30 and falls in the range of LG Stylo 4. In this post, we are going to find out the differences and similarities between these 3 phones and where does the K30 stand in comparison.

So Let’s start with the differences at first –


Difference between LG K30, Samsung J7 Star & J7 Prime

LG K30 vs Samsung J7 Star vs J7 Prime

The left one is LG K30, the middle one is Samsung J7 Star and the last one on the right is J7 Prime

LG K30 vs Samsung J7 Prime vs J7 Star


1. Price & Release Date – Difference between LG K30, Samsung J7 Star & J7 Prime

PRICE & RELEASE DATELG K30Samsung J7 StarSamsung J7 Prime
Model NumberLM-X410MK/X410TKSM-J737TSM-J727T
Release DateMay 2018July 2018May 2017
Current PriceAround $70Around $120Around $100

Samsung J7 star retails for almost twice the price of LG K30. Even J7 Prime is costlier than K30 at present.

As mentioned before, J7 Prime is the predecessor to Samsung J7 Star which came in 2017. J7 star released a year later in Mid 2018 and near about the same time K30 was also launched.

2. Body & Design – LG K30 vs Samsung J7 Star vs J7 Prime – Differences

ColorsBlackSilverBlack, Gold
Body MaterialMetal & PlasticPlasticPlastic
Dimensions5.85 x 2.95 x 0.34 inches6.03 x 3.0 x 0.34 inches5.96 x 3.0 x 0.34 inches
Weight5.93 oz6.38 oz6.0 oz
Removable Battery

K30 and J7 Star from T-Mobile are available in Black & Silver colors respectively.  However, T-Mobile J7 Prime is available in 2 colors which are Black & Gold.

All 3 phones feel solid in hand, but K30 fits more nicely being smaller in size. K30 uses a metal back and a plastic frame, whereas both J7 Star and Prime, are made up of plastic.

Among the 3, only Samsung J7 Prime has a removable battery.



3. Display – LG K30 vs Samsung J7 Star vs J7 Prime – Differences

DISPLAYLG K30Samsung J7 StarSamsung J7 Prime
Screen Size5.3"5.5"5.3"
Display Type / TechnologyIPS LCDTFT LCDTFT LCD
Gorilla Glass / Glass Screen Protection
Corning Gorilla Glass 5Corning Gorilla Glass 4
Pixel Density277 ppi267 ppi267 ppi

The display quality of all 3 phones is good but the resolution is lower in proportion to screen size.

Even though the screen resolution of all phones is the same, the J7 display is slightly bigger (5.5 inches) than K30 (5.3 inches).

K30 has an IPS LCD display whereas J7 Star / Prime has a TFT LCD display.

LG K30 glass is more prone to damage as there is no screen protection. J7 Star and J7 Prime have Corning Gorilla Glass 5 & Gorilla Glass 4 Screen protection respectively.

4. Hardware & Benchmark – LG K30 vs Samsung J7 Star vs J7 Prime – Differences

HARDWARE & BENCHMARKLG K30Samsung J7 StarSamsung J7 Prime
Processor / CPU1.4 GHz Quad-Core, Cortex A531.6 GHz Octa-Core, Cortex A531.6 GHz Octa-Core, Cortex A53
Chipset28nm, Qualcomm Snapdragon 425 MSM891714nm, Exynos 7 7870 Octa14nm, Exynos 7 7870 Octa
GPUAdreno 308Mali T-830 MP1Mali T-830 MP1
Antutu Score383036324961237

Like other Samsung Phones, J7 Star / Prime has in-house 1.6 GHz Samsung Exynos Octa-Core Processor based on 14nm. K30 has a 28nm, 1.4 GHz Octa-Core Qualcomm Snapdragon Processor.

The weaker processor in LG K30 leads to a much lower Antutu Benchmark score as compared to Samsung J7 Star & J7 Prime. You can check out the scores with the help of the above table.


5. Software & Connectivity – LG K30 vs Samsung J7 Star vs J7 Prime – Differences

SOFTWARE & CONNECTIVITYLG K30Samsung J7 StarSamsung J7 Prime
Android Version Android 8.1 OreoAndroid 9.0 PieAndroid 8.0 Oreo
NFC / Android Pay / Android Beam

MHL / Slimport / HDMI Compatible

Screen Mirroring / Miracast / Screen Share / Smart View

Samsung J7 Star is upgraded to Android Pie 9.0 while J7 Prime and K30 are still on Android Oreo with very bleak chances of getting an update to Pie.

LG K30 Firmware Download

Out of the 3, only Samsung J7 Star has NFC. It’s a must-have feature nowadays, for hassle-free contactless payment.

HDMI cable is not a part of the Samsung J7 Star / Prime sales package, but 3rd party HDMI cables are available online which assist is screen mirroring without an internet connection. I haven’t found a similar HDMI cable for LG K30 yet.

LG K30 Screen Mirroring

In K30 there is no option to cast / mirror screen on the TV.  Samsung J7 Prime & Star support screen mirroring by the name of “Smart View”. Which when turned on can detect available screen mirroring devices such as Chromecast, Roku, Fire TV Stick, Android Smart TV, etc.



6. Camera – LG K30 vs Samsung J7 Star vs J7 Prime – Differences

CAMERA LG K30Samsung J7 StarSamsung J7 Prime
Image Resolution / Megapixels13 MP13 MP8 MP
Phase Detection Auto Focus (PDAF)

Manual Mode / Controls
Image Resolution / Megapixels5 MP13 MP5 MP

Samsung J7 Star has the best camera among the 3 which produces higher resolution images with better picture quality. Both Front and Rear cameras on J7 Star are 13 Megapixels.

K30 has a 13 MP rear camera but the front camera is only 5 MP. The Rear and Selfie Camera on J7 Prime is 8 MP and 5 MP respectively.

The rear camera on all 3 phones supports autofocus but it’s much faster on K30, thanks to Phase Detection Autofocus (PDAF).

Among the 3, only K30 features Manual controls in the form of Manual Autofocus & ISO sensitivity adjustment.


7. Audio & Sensors – LG K30 vs Samsung J7 Star vs J7 Prime – Differences

AUDIO & SENSORSLG K30Samsung J7 StarSamsung J7 Prime
Loud Speaker LocationBackRightRight
Surround SoundDTS:X 3D Virtual Surround

Fingerprint Sensor

Samsung has placed the loudspeaker in the right place. Instead of back, it’s mounted on the right. On K30 due to the rear placement of the speaker, it gets blocked when placed on a table.

LG K30 provides better audio quality via earphones. It supports DTS:X 3D Virtual Surround sound.

Both Samsung J7 Star & Prime lack a fingerprint sensor and had to resort to facial recognition for screen unlocking which is slower in comparison. LG K30 has a fingerprint sensor on the back which doubles as a power button.


8. Battery – LG K30 vs Samsung J7 Star vs J7 Prime – Differences

BATTERY LG K30Samsung J7 StarJ7 Prime
Battery Capacity2880 mAh3300 mAh3300 mAh
Battery Life / Talk TimeUp to 13 hrs & 40 minsUp to 27 hrs & 40 minsUp to 27 hrs & 40 mins

Samsung J7 Star / Prime has got a higher capacity battery (3300 mAh) than LG K30 (2880 mAh). The rated Talktime of J7 Star / Prime is twice that of LG K30. Which is quite surprising and the real-world results may vary.

LG K30 Dark mode – Double Your K30 Battery Life


Similarities between LG K30, Samsung J7 Star & J7 Prime

What they share in commonLG K30, Samsung J7 Star & J7 Prime
BODY & DESIGNK30, J7 Star & J7 Prime
Memory Card Slot / Expandable Memory
DISPLAYK30, J7 Star & J7 Prime
Aspect Ratio16:9
Screen Resolution / Wallpaper Size1280 x 720 pixels
Contoured / Curved Edge
NETWORKK30, J7 Star & J7 Prime
Sim Size/TypeNano
GSM Unlock StatusLocked
Wifi Calling
SENSORSK30, J7 Star & J7 Prime
Gyroscope / VR Compatibility
Magnetometer / Digital Compass / Geomagnetic Sensor
Ambient Light Sensor
Proximity Sensor
CONNECTIVITYK30, J7 Star & J7 Prime
USB PortMicro USB 2.0
Wifi Tethering / Hotspot
IR Blaster / TV Remote
AUDIO K30, J7 Star & J7 Prime
Headphone Jack3.5 mm
Notification LED Light
Quick Charge / Fast Charging
Wireless Charging / Qi-enabled
MEMORY/STORAGEK30, J7 Star & J7 Prime
Internal Memory / ROM32 GB
Expandable Memory
Facial Recognition / Smart Unlock
Google Assistant
Split Screen /Multi Window
CAMERA K30, J7 Star & J7 Prime
FlashSingle LED Flash
ZoomUp to 4x, Digital Zoom
Video Resolution1080p @ 30 fps
Face Detection
Slow Motion
Time Lapse
Video Stabilization
Selfie Flash
Video1080p @ 30 fps
Root StatusK30, J7 Star & J7 Prime
Can be Rooted
The Bootloader can be unlocked
Custom ROM availability

The above table shows the similarities between K30, J7 Star and J7 Prime. It also covers those features which are missing on all 3 phones and can be found elsewhere in some other high-end Android smartphone.


From the above comparison, we can conclude that in some areas K30 was able to beat J7 Star & Prime, but the overall result is in favor of Samsung J7 Star.

Strong areas of LG K30 over J7 Star / Prime –

  • Lower Price
  • Metal Back
  • Being more compact fits nicely in the hand
  • IPS LCD display
  • Phase Detection AutoFocus
  • 3D Virtual Surround Sound
  • Fingerprint Sensor


Samsung J7 Star wins in these departments –

  • Bigger screen with Corning Gorilla Glass 5 Screen Protection
  • More Powerful Hardware
  • Latest Android Pie 9.0
  • NFC
  • HDMI & Screen Mirroring Support
  • 13MP Selfie Camera
  • Higher capacity battery with much better battery life


You may also like to check out the below comparisons –

LG K30 vs K40 vs Aristo 4 vs Stylo 4 – Antutu Test 

LG K20 vs K30 vs K40

LG K30 vs Moto G6 Play

LG K30 vs Moto G6 vs G7 Power

LG K30 vs Moto E5 Play vs E5 Plus

LG K30 vs LG Stylo4 vs Stylo 5 

LG K30 vs LG Q7 Plus 

For any correction or query, please leave a comment below.

Leave a Comment