Smartphones are sold with a variety of design characteristics and are frequently replaced for socio-economic and technological factors. Therefore, it’s crucial to grasp some specific hardware components (such as the screen, battery, and CPU), as well as the operating system, and use such devices for a long time before having to replace them. Fortunately, our vivo X21i review will help you cover all the requirements for purchasing your best mobile phone.
vivo X21i model status in the market is: Available. However, it is declared by vivo company on 5/1/2018 and Released 2018, May.
vivo X21i has 64GB 6GB RAM, and 3425 mAh battery life (the more mAh value gives more strength to the battery). When you purchase vivo X21i, you will gain 12 MP, f/1.8, 1/2.55″, 1.4µm, dual pixel PDAF rear camera and 24 MP, f/2.0, 26mm (wide), 1/2.8″, 0.9µm selfie camera.
vivo X21i comes with a 6.28 inches, 98.4 cm2 display size .
vivo X21i has these software and hardware platforms:
* Android 8.1 (Oreo), Funtouch 4 OS,
* Mediatek MT6771 Helio P60 (12 nm) Chipset
* Octa-core (4×2.0 GHz Cortex-A73 & 4×2.0 GHz Cortex-A53) Processor.
In this article, you will find vivo X21i review which will sort-out the main vivo X21i specifications that you need to make a well-informed decision about your new mobile phone.
Read vivo X21i Review To Know More About The Body Features
cellular phone’s body characteristics are very important to be considered while thinking to buy a new device. These characteristics are the body dimensions, the body weight, and the body build. In these following lines, you will read vivo X21i review in terms of the body features.
* Body Dimensions: 154.4 x 75 x 7 mm (6.08 x 2.95 x 0.28 in) which mean height, width, and thickness (depth) respectively.
* Body Weight: 159 g (5.61 oz).
Any weight between 140g and 170g is considered suitable for smartphones and is good for the majority of users.
The Available Colors – vivo X21i Review
No color is superior to any other for the smartphones case, but it hinges on two things: the first one is your personal taste, and the second is the nature of your work.
vivo X21i comes in the following colors: Black, Aurora White, Ruby Red, Night Purple.
vivo X21i Review of The Display specifications and Quality
With the rapid development of mobile innovations, it is hard to identify any smartphone or combination of features as the best. This applies to the quality and specifications of the screen. In fact, choosing it depends on your particular requirement and the areas in which you use cellular phones. In the following lines, we will talk about the fundamental screen characteristics of vivo X21i
Display Type: Super AMOLED – Remember that you need to look for a screen type that offers more flashy colors and proper black color.
Display Size: 6.28 inches, 98.4 cm2 – The popular standard screen size of cellphones now averages between 4.7 and 6.5 inches.
Screen To Body Ratio: (~85.0% screen-to-body ratio). It refers to the percentage of how much of the front side is covered by the display.. Smartphones that have the largest screen to body ratio look delicate and give it a premium look.
Display Ratio: 19:9 ratio. the Aspect ratio is the relevance between the height and width of the smartphone screen. Taller aspect ratios like 19.5:9 is coming with the most modern smartphones, and it is suitable for web browsing, and other portrait orientation apps.
Display Resolution: 1080 x 2280 pixels. It is the clarity of an image video in details and sharpness. The pixel resolution for high definition screens is 1920 x 1080.
Display Density: (~402 ppi density). It is the number of physical pixels per inch on a screen, and is measured in Pixels Per Inch (ppi).
vivo X21i Review of The Camera Specs
In the following lines, you will find vivo X21i review about the main cameras.
* Main Camera Single: {12 MP, f/1.8, 1/2.55″, 1.4µm, dual pixel PDAF}.
The following lines explain some of the symbols included in the camera characteristics:
MP (Megapixels) is the resolution of the image taken by a cellphone.
(f value) is the aperture of a lens indicates how much light it lets in. The larger the aperture, the more light is let in; and vice versa.
(mm value) This measurement is of the lens’s focal length, which affects the final image that is produced by your camera.
AutoFocus (AF) is the function of a camera to automatically focus on a subject.
* Main Camera Dual: 5 MP, f/2.4, (depth)
The main camera features are as follows:
HDR, panorama, 1080p@30fps main video camera.
In the following lines, you will find vivo X21i review of the selfie camera:
* Selfie Camera Single: 24 MP, f/2.0, 26mm (wide), 1/2.8″, 0.9µm
The main camera specifications are:
What’s The SIM card? vivo X21i Review
A SIM card, also known as a Subscriber Identity Module, is an electronic card that stores information including user identity, phone number, network authorization data, personal security keys, and contact lists. A SIM card connects a smartphone to a specific mobile network to use its features, like making calls, connecting to internet services such as 3G, 4G LTE (please refer to vivo X21i 3G or vivo X21i 4G articles ) and 5G, or sending SMS messages. Please note that its possible to use your phone without SIM card as a personal assistant device.
This phone model comes with Hybrid Dual SIM (Nano-SIM, dual stand-by) card. For more information, refer to How to insert SIM card in vivo X21i article.
Here are the common SIM card types:
* Nano SIM. It is the smallest removable SIM card size, so it is the most modern one (other than eSIMs, which we’ll read about it very soon) and it’s used by the vast majority of modern smartphones.
* Micro SIM. They have a slightly larger chip, and they haven’t been utilized too often lately.
* Standard SIM (Mini SIM). It is the biggest SIM card size in use, and it’s the most rarely used.
* eSIM. It is an embedded SIM card, i.e., you can’t take it off of your cellular phone.
vivo X21i Review – The Main Hardware Platforms
This model has Mediatek MT6771 Helio P60 (12 nm) chipset.
A chipset on a mobile phone is most usually referred as a system on chip (SoC). It is an integrated circuit that combines all basic parts of a device on one chip. The most common kinds are: QUALCOMM Snapdragon, MEDIATEK CHIPSETS, and INTEL ATOM.
vivo X21i has Octa-core (4×2.0 GHz Cortex-A73 & 4×2.0 GHz Cortex-A53) CPU.
The higher the number of cores, and the higher the number of processing speed the better the processor’s performance will be.
vivo X21i has the following GBU (Graphics Processing Unit): Mali-G72 MP3.
All graphics jobs are processed and accelerated by this chip, and the faster the GPU, the more powerful the smartphone will be.
vivo X21i Review of the Storage specifications and Capacity
The amount of storage that a new cellphone offers is one of the main decision considerations.. Actually, vivo X21i comes with microSDXC (uses shared SIM slot) memory card slot, and the following internal storage: 64GB 6GB RAM – 128GB 4GB RAM
There are two types of phone’s memory:
Internal: It is integrated inside the phone, and can’t be extended. These days, most cellular phones come with internal memory of at least 32GB or 64GB and a few high-end models feature 256GB or 512GB.
External: It is a removable SD card used as an alternative memory to store photos, music, videos, etc., regardless of the kind of SD card slot.
vivo X21i Review of communication and Mobile Networks
A mobile network, (or wireless network), is a system for transmitting and receiving radio waves between mobile devices. It is made up of base stations, each of which covers a separate region or “cell”. This makes it possible for several mobile transceivers such as cellular phones to communicate together. Actually, three kinds of working mobile networks: 3G, 4G (LTE), and 5G.
vivo X21i supports the following networks: 3G. For more info, refer to vivo X21i 3G article. – 4G. For more info, refer to vivo X21i 4G article.
Available Wireless Connections – vivo X21i Review
This model comes with the following wireless connections:
* WLAN connection: {Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot}. Wireless Local Area Network depends on Wi-Fi to connect to the home or office wireless network using the local router and offers Internet access.
* Bluetooth connection: {5.0, A2DP, LE}. It is a common wireless communication protocol used to communicate two devices together over short distances, allowing them share data between different devices.
* GBS connection: {Yes, with A-GPS, GLONASS}.Global Positioning System enables cellular phone to define any position you need.
* USB connection: {microUSB 2.0, USB On-The-Go}.Universal Serial Bus is wired technology that allows users to connect two devices, such as a smartphone with a PC, to either transfer data or to charge the connected device.
* Features Sensors: {Fingerprint (rear-mounted), accelerometer, proximity, compass}. The sensor is a device that detects and majors the changes in the nearby environment such as ambient light and motion.
The Operating System – vivo X21i Review
This model comes with {Android 8.1 (Oreo), Funtouch 4} operating system.
PHONE Review – The Battery Main Specifications
Nothing is more important than the battery of the cellular phone that keeps these gadgets running and granting daily life working. The following lines are demonstrating vivo X21i review of its primary battery.
* Battery Technology: {Li-Ion}.
* vivo X21i comes with {non-removable} battery.
* Battery Capacity: {3425} mAh. It refers to the storage capacity a specific battery may offer. A battery with 3100 mAh capacity rating could supply a current of 3100 mA for one hour. Higher mAh ratings for the same battery kind will generally mean longer working time.
* Battery Charging: {Fast charging 40W}.
* Battery Charging Time: {40% in 15 min}.
vivo X21i Review of the Battery Secondary Specifications
In addition to the major vivo X21i specifications that we mentioned earlier, this model has more battery-related characteristics that are relatively different depending on the model of the smartphone. Here are these features:
* Battery Charging Original: {Fast charging 18W}.
* Second Type of Battery Charging Time: {100% in 50 min (advertised)}.
* Battery Wireless Charging: {Fast wireless charging 40W}.
* Battery Wireless Reverse Charging: {Reverse wireless charging 10W}.
* Quick Charge: {Quick Charge 4+}.
* Power Delivery: {Power Delivery 3.0}.