Walton announced the launch of the Primo EF4 smartphone in 2016. The manufacturer is offering the Walton Primo EF4 phone with 5 inches display, Spreadtrum SC7731G chipset, 512 MB of RAM and 8 GB of internal storage.
The Walton Primo EF4 comes with Android OS v6.0 (Marshmallow) out of the box, and a Li-Ion 2300 mAh battery. The 5 inches phone comes with a TFT display (480 x 854 px).
Walton Primo EF4 specifications
The weight of Walton Primo EF4 is about 5.47 oz with battery, which is average compared to most of the smartphones with same size. The dimensions of this Walton phone are average (5.71 x 2.89 x 0.41 inches).
|Dimensions||5.71 x 2.89 x 0.41 inches|
|SIM type||Micro SIM|
The Walton Primo EF4 comes with Android OS v6.0 (Marshmallow) out of the box, but it is upgradable to the next OS. Android is a mobile operating system developed by Google based on a modified version of the Linux kernel and other open-source software. We use AnTuTu app to measure general processing performance. AnTuTu Benchmark is the most popular benchmark app for Android phones.
|OS version||Android OS v6.0 (Marshmallow)|
|CPU||Quad-core 1.2 GHz Cortex-A7|
|Performance||AnTuTu v9: 22366|
The size of Primo EF4 screen is measured diagonally, from corner to corner. The 5 inches phone comes with TFT display. A thin-film transistor (TFT) is a type of field-effect transistor that is usually used in a liquid crystal display (LCD). This type of display features a thin-film transistor for each individual pixel. The 5 inches TFT display of Walton Primo EF4 with 480 x 854 px resolution is multitouch capable.
|Screen size||5 inches|
|Resolution||480 x 854 px|
The internal memory of Walton Primo EF4 (512 MB) cannot be expanded, but the internal storage (8 GB) can be expanded with a compatible microSD card.
|Internal storage||8 GB|
|Memory card slot||microSD|
The camera of the Primo EF4 is equipped with autofocus. An autofocus (or AF) optical system uses a sensor, a control system and a motor to focus on an automatically or manually selected point or area. Very few Android cameras come without autofocus.
|Selfie camera||2 MP|
|Main camera||5 MP, 2592 x 1944 px, autofocus|
The Walton Primo EF4 supports 2G and 3G networks only. 3G is obsolete now, because most phones can use 4G and 5G networks. This phone has a built-in GPS. GPS is a highly accurate navigation system using signals from satellites to determine a location on the Earth's surface, irrespective of weather conditions. Most phones have a GPS unit on board. The Primo EF4 phone has built-in FM radio. The built-in FM Radio is great for listening to your favorite radio station.
|GSM 2G bands||850 / 900 / 1800 / 1900|
|Network coverage||2G / 3G|
|Wi-Fi||Wi-Fi 802.11 b/g/n|
|Headphone||3.5 mm jack|
The Li-Ion 2300 mAh battery gives the smartphone a good battery backup. The Li-ion is a low maintenance battery which offers high energy, is lightweight and does not require periodic full discharge. The battery of Primo EF4 is removable. You can simply buy a new piece from the open market and interchange it easily by yourself.
|Type||Li-Ion 2300 mAh|
Smartphones today come with a wealth of sensors to facilitate a better user experience. The accelerometer is a sensor that measures the tilting motion and orientation of the phone. The Dual SIM capability of Walton Primo EF4 phone is ideal for businesses wishing to provide staff with a mobile device that can offer separate numbers and bills for both personal and business use. This smartphone doesn't support fast charging technology.
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 pictures
Walton Primo EF4 comparisons
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