Walton Primo EF4 (2016) review

Android OS v6.0 (Marshmallow)
Spreadtrum SC7731G
512 MB / 8 GB
5 inches 480 x 854 px

The Walton Primo EF4 (PREF4) smartphone released in 2016. It is powered by Spreadtrum SC7731G chipset, 512 MB of RAM and 8 GB of internal storage.

The Walton Primo EF4 runs on Android OS v6.0 (Marshmallow) out of the box. It comes with a Li-Ion 2300 mAh battery. It features a 5 inches TFT display with 480 x 854 px resolution. A thin-film-transistor (TFT) LCD display is a variant of a liquid-crystal display (LCD).

Table of contents:

Walton Primo EF4 (PREF4) specifications

NamePrimo EF4
Rated 4/5 based on 25 user votes.


Weight155 g
Dimensions145.09 x 73.28 x 10.35 mm
SIM typeMicro SIM


The Walton Primo EF4 runs on Android OS v6.0 (Marshmallow) out of the box, but the Primo EF4's firmware can be upgraded to a newer version of OS.

OSAndroid OS v6.0 (Marshmallow)
ChipsetSpreadtrum SC7731G
CPUQuad-core 1.2 GHz Cortex-A7
GPUMali-400 MP2
PerformanceAnTuTu v9: 22366


Screen size is measured in inches, diagonally from corner to corner. The 5 inches TFT capacitive touch screen with 480 x 854 px resolution is multitouch capable.

Size5 inches
Resolution480 x 854 px


The smartphone's memory (512 MB) cannot be expanded, but the storage (8 GB) can be expanded with a microSD card.

Internal storage8 GB
External storagemicroSD


The camera of the Walton Primo EF4 is equipped with autofocus. Autofocus is a camera feature that fine-tunes the focus of the camera, it is a nice feature of this smartphone.

Front camera2 MP
Rear camera5 MP
2592 x 1944 px


This smartphone has a built-in GPS receiver. GPS is a satellite based navigation system that allows the determination of the exact geographical location on Earth. This Walton smartphone has FM radio receiver.

GSM850 / 900 / 1800 / 1900
Mobile network2G / 3G
WLANWi-Fi 802.11 b/g/n
Bluetoothv4.0, A2DP
FM radioyes
USBmicroUSB 2.0
Audio3.5 mm jack


The Li-Ion 2300 mAh battery gives the smartphone a good battery backup. This is a low maintenance battery. No periodic discharge is needed and charging can be done at random.

TypeLi-Ion 2300 mAh


The smartphone sensors measure physical quantities and transmit them to the application processor. The phones's accelerometer is a built-in electronic component that measures tilt and motion. The Primo EF4 has Dual SIM capability, which means that you can insert two different SIM cards and use them both from one phone.

SpecialsDual SIM

The specifications above are based on the official data published by the manufacturer, but we also take user reviews into consideration. If you found an error or something lacking in the specifications above for the Walton Primo EF4, then don’t hesitate and signal the problem to us.

Walton Primo EF4 (PREF4) pictures

Walton Primo EF4 / PREF4 photo Walton Primo EF4 / PREF4 photo Walton Primo EF4 / PREF4 photo
Walton Primo EF4 / PREF4

Walton Primo EF4 (PREF4) comparisons

According to our statistics, the Walton Primo EF4 smartphone was most often compared on our site with the following smartphones.

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