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Symphony

Symphony i21 (2017)

Android OS v6.0 (Marshmallow)
Mediatek MT6580
Mali-400 MP2
1 GB / 8 GB
5 inch (720 x 1280 px)
8 MP, 3264 x 2448 px, autofocus

This phone comes equipped with a 5 inch IPS display, a Mediatek MT6580 chipset, and 1 GB of RAM.

Does this phone justify its price tag? I hope to provide clarity by the conclusion of my review.

Table of Contents

This article shares our personal experiences and thoughts about using the Symphony i21 smartphone. We hope to offer helpful insights to others interested in this device.

Symphony i21 / 1

Symphony i21 specifications

BrandSymphony
Namei21
ModelI21
Release date2017

Weight, dimensions, colors

Weight5.08 oz
Dimensions5.73 x 2.86 x 0.35 inch
Colorsgray
SIM typeNano SIM, Micro SIM

The weight of Symphony i21 is about 5.08 oz with battery. This is average for smartphones of the same size. Smartphones use a Nano SIM as a small chipcard for a subscriber identity module (SIM). A micro SIM is a smaller version of the standard SIM card used in mobile devices.

System, chipset, performance

OS versionAndroid OS v6.0 (Marshmallow)
SoCMediatek MT6580
CPUQuad-core 1.3 GHz Cortex-A7
GPUMali-400 MP2
PerformanceAnTuTu v9: 32062

The Symphony i21 comes with Android OS v6.0 (Marshmallow) out of the box. Google has integrated many services with Android. These include Google Maps, Gmail, and Google Drive. The mid-range CPU can deliver fast, efficient performance for many tasks. Many mobile devices use ARM Mali GPUs. They are well known for their good performance and power efficiency. We use AnTuTu app to measure general processing performance. AnTuTu Benchmark is the most popular benchmark app for Android phones.

Symphony i21 / 1

Display type, size, resolution

Display typeIPS
Screen size5 inch
Resolution720 x 1280 px
Multitouch supportyes

The 5 inch IPS display has better features. These include optimal viewing angles, color accuracy, and unchanging color reproduction. The 5 inch display make this smartphone pocket-friendly. The size of the screen is measured diagonally, from corner to corner.

Memory, storage

RAM1 GB
Internal storage8 GB
Memory card slotmicroSD

1 GB of RAM is not typically considered to be enough for a smartphone. Having more RAM alone does not guarantee better performance. Most people think a smartphone needs at least 32 GB of storage. The i21 has only 8 GB. We can expand the internal storage (8 GB) with a compatible microSD card.

Symphony i21 / 2

Cameras, flash

Main camera8 MP, 3264 x 2448 px, autofocus
FlashDual LED
Selfie camera5 MP

This single camera can be enough for many smartphone users, it depends on their photography needs and preferences. The i21 does not have optical image stabilization (OIS).

Connectivity, network, wireless

GSM 2G bands850 / 900 / 1800 / 1900
Network coverage2G / 3G
Wi-FiWi-Fi 802.11 b/g/n
Bluetoothv2.1, A2DP
GPSA-GPS
NFCno
FM radioyes
USBmicroUSB 2.0
Headphone3.5 mm jack

The 3G is obsolete now, because most phones can use 4G and 5G networks. The phone is capable of connecting to Wi-Fi networks. The i21 smartphone is capable of connecting to Bluetooth devices. The GPS allows this smartphone to find their exact location. It provides accurate navigation and mapping. The phone isn't NFC (Near Field Communication) capable. NFC is not essential for basic phone functionality, but it can be useful. The 3.5 mm headphone jack allows us to connect wired headphones or earphones to the device.

Battery type, capacity, charger

TypeLi-Po 2500 mAh, non-removable

The Li-Po 2500 mAh, non-removable battery gives the smartphone a good battery backup. The lithium polymer (Li-Po) battery is a light-weight, rechargeable battery. The battery of i21 isn't removable without voiding the warranty.

Features, sensors, specials

Sensorsaccelerometer, light, proximity
SpecialsDual SIM

Today, smartphones come with many sensors. They help make the user experience better. The accelerometer provides information about the smartphone's movement in three axes. These are X (horizontal), Y (vertical), and Z (depth). The light sensor detects the level of light in the environment. Dual SIM is great for businesses. They want to give staff a device with separate numbers and bills for personal and business use.

Verdict, pros and cons

Every phone has its strengths and weaknesses, and this Symphony phone is no exception. As with any device, there are aspects that shine and others that fall short. By examining both sides, we can paint a complete picture of what this phone has to offer. Let's explore its standout features and areas for improvement. Remember, this is just my opinion, and yours might be different.

Pros

  • microSD slot
  • Dual SIM support

Cons

  • weak performance
  • limited-size screen
  • insufficient memory
  • insufficient internal storage
  • single camera setup
  • no OIS function
  • no 4G support
  • no 5G support
  • no NFC feature
  • no Type-C USB port
  • low-capacity battery
  • no digital compass
  • no fingerprint reader
Add Symphony i21 to your comparison

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Updated: June 30, 2024

Lucas Bradley I'm Lucas Bradley, the founder of the Phone42.com site. I love technology, especially smartphones, and I've been working with tech stuff for more than 20 years. This means I've seen a lot of changes and have learned a bunch about what makes a good phone. On Phone42.com, I look at all kinds of phones. They can be from big, well-known companies or new ones trying to make their mark. I want to help people understand what's new and cool in the world of smartphones, in a way that's easy to get.
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