BLU Energy Diamond

Name: BLU Energy Diamond
Brand: BLU

Display5.0" 480 x 854 pixels

ChipsetMediatek MT6580 (28 nm)

Main camera5MP

Battery4000 mAh

5.0GoSolo score

ReviewMore BLU

Network

Technology

GSM / HSPA

2G bands

GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2

3G bands

HSDPA 850 / 1700(AWS) / 1900 - E130U

Speed

HSPA 21.1/5.76 Mbps

Launch

Announced

2016, August. Released 2016, August

Status

Discontinued

Body

Dimensions

147.5 x 71.5 x 12.7 mm (5.81 x 2.81 x 0.5 in)

Weight

184 g (6.49 oz)

SIM

Dual SIM (Micro-SIM, dual stand-by)

Display

Type

LCD

Size

5.0 inches, 68.9 cm2 (~65.3% screen-to-body ratio)

Resolution

480 x 854 pixels, 16:9 ratio (~196 ppi density)

Platform

Android 6.0 (Marshmallow)

Chipset

Mediatek MT6580 (28 nm)

CPU

Quad-core 1.3 GHz Cortex-A7

GPU

Mali-400MP2

Memory

Card slot

microSDXC

Internal

8GB 1GB RAM

Main Camera

Modules

5 MP, AF

Features

LED flash

Video

720@30fps

Selfie Camera

Module

2 MP

Features

LED flash

Sound

Loudspeaker

Yes, dual speakers

3.5mm jack

Yes

Comms

WLAN

Wi-Fi 802.11 b/g/n, Wi-Fi Direct

Bluetooth

4.0, A2DP

Positioning

GPS

NFC

Radio

Stereo FM radio

USB

microUSB 2.0

Features

Sensors

Accelerometer, proximity

Battery

Type

Li-Po 4000 mAh, removable

Misc

Colors

Grey, White, Pink, Gold, Blue

GoSolo Score Breakdown

Design55

Display52

Performance50

Camera48

Battery46

Value50

GoSolo Verdict

The BLU Energy Diamond is a 2016 budget phone that prioritizes battery life and cost over speed or features, making it suitable mainly for users in regions with spotty networks or those who need a phone that runs for days. By 2024 standards it is effectively obsolete: slow connectivity, a cramped display, and minimal processing power mean it struggles with modern apps and will receive no security updates.

Strengths · 3

4000 mAh removable battery was genuinely durable for the era and gives the phone its core selling point: multi-day battery life without a charger.
Dual SIM with FM radio and microSD slot appeals to developing-market users who expect flexibility.
No bloat: minimal onboard RAM and storage meant the phone was cheap to produce and buy, and the 1GB RAM meant you got exactly what you paid for.

Trade-offs · 3

Stuck on Android 6.0 (Marshmallow) from 2016 with no upgrade path; modern apps will refuse to install or run, and it is a security liability.
HSPA 3G speeds max out at 21 Mbps, well behind the 4G standard that became normal by 2017; web browsing and video are noticeably slow.
480x854 resolution on a 5-inch screen yields 196 ppi, making text and icons grainy by modern standards; the Cortex-A7 chip struggles even with light multitasking.