Samsung Galaxy J3 Luna Pro Review: A Lot for A little [2020 Update]

Samsung needs no introduction. This brand is known for its premium products. Although they do produce a few budget devices once in a while, they manage to excel with those too.

The Galaxy J series was first introduced in 2015 and had great success. It consisted of mid-range phones that were popular for a couple years. Unfortunately, the range has been discontinued, but some products are still available from other manufacturers.

We are going to cover one such phone. This Samsung Galaxy J3 Luna Pro review covers everything you need to know. Released in 2017, and now manufactured by Tracfone, we are not exaggerating; with this device, you do get a lot for very little.

What We Mean By ‘A Lot’

This is not a flagship device. But it is a great package for the price.

The phone is carrier-locked, so it is the best deal for Tracfone users. They have a number of data packages that come with the purchase of this phone. The Samsung Galaxy J3 Luna Pro (S337TL) is also available from StraightTalk. The phone is priced low and has pretty good features. Let’s dive directly into the details.

Device Specifications:


141 x 70 x 8.6 mm


5.0” (127 mm) HD display


1280 x 720 pixels



Operating system

Android 6.0 Marshmallow (upgradable)


1.4 GHz Samsung Exynos 7570

Internal Memory

16GB (expandable with microSD)


3.5mm headphone jack, side-facing speakers


- 5MP rear camera with flash, 1080p video recording
- 2MP front camera


2600 mAh (removable)


4G LTE, WiFi, Bluetooth 4.2

The J3 Luna Pro has a black plastic back cover with metal frames, which is quite appealing. It has a solid build quality with a power button on one side and volume buttons on the other. It also has a physical home button at the bottom front, which the latest smartphones do not. This is something I am personally fond of as well since the navigation keys are on each side of the home button rather than on the screen.

This is a compact phone with a 5.0” (127 mm) display size, which is not too big, and not too small. The resolution is good too with 24-bit color depth. Images are clear and colorful (although not those taken by this phone camera).

The RAM on this device is not all that great but works well with the quad-core Exynos processor. It has a 16GB internal memory which is expandable up to 128GB. It supports both microSDHC, microSDXC cards. The phone was launched with Android 6.0 Marshmallow but is upgradable up to 7.0 Nougat. In my opinion, 7.0 was probably one of the best Android versions with just enough updated features to compete with the latest versions. I would happily run my phone on this version even now.

The camera is average, but it does have a flash and HD video recording. The sound system is nothing out of the ordinary, but because the speakers are positioned on the side, it does get quite loud. That won’t be a concern if you use headphones, which most people do. You can also use wired ones since this phone has a headphone jack.

Owing to the low RAM, 2600 mAh battery works pretty well. The battery has a standby time of up to 404 hours. But at the end of the day, the battery life depends on your usage.

Samsung Galaxy J3 Luna Pro

The Good and The Bad

For a budget device, some of its features are great. Here are a bunch of features we were pleasantly surprised by.


  • Light and compact – Not everyone wants a large screen. This is still larger than most but is a comfortable size to hold. Because of the material used in the body, the phone is quite light.

  • Removable battery – The best part about a removable battery is that it can be changed in case your current one is ruined. You don’t have to throw away the phone because your non-removable battery has an issue. This is the case with most high-end phones these days.

  • Navigation buttons not on the screen – This is a personal preference but I do feel it is much better than the navigation button being beside the physical home button. This way, it does not take up any space on the screen.

And there are certain things we didn’t like.


  • Low RAM – Even though the overall performance is okay, the RAM is quite low for a smartphone upgradeable to Android 7.0 with a quad-core processor.

  • Camera – The flash does not help with the low resolution. Considering how well Samsung cameras perform, this one is a little disappointing.

Interested yet? Check it out on Amazon.

Simple Mobile Samsung Galaxy J3 Luna Pro 4G LTE Prepaid Smartphone
5.0" HD screen; 1.4 GHz quad-core processor; Android 6.0 Marshmallow; 4G LTE; Wi-Fi capable; Bluetooth 4.2 wireless technology; MP3 Player

Despite the issues, you will get value for money with this device. Considering the Samsung Galaxy J3 Luna Pro specs, I would say the price is more than reasonable. If you are looking for a budget device, you can get one with the Samsung brand name as a bonus.

Affiliate links / Images from Amazon Product Advertising API. Converged Devices is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for website owners to earn advertising fees by advertising and linking to amazon (.com,, .ca etc) and any other website that may be affiliated with Amazon Service LLC Associates Program.

Follow us here