Celkon Millennia Hero vs Xiaomi Mi 8 Explorer: specs comparison

Key differences

Calculated from recorded specifications using minimum difference thresholds. These are differences, not an overall ranking. For three phones, numeric highlights compare the two extremes.

Weight

Millennia Hero: 64 g lighter

Millennia Hero:

113 g

Mi 8 Explorer:

177 g
Width

Millennia Hero: 10.8 mm narrower

Millennia Hero:

64 mm

Mi 8 Explorer:

74.8 mm
Screen diagonal

Millennia Hero: 2.21 in smaller diagonal

Millennia Hero:

4 in

Mi 8 Explorer:

6.21 in
Rear camera layout

Millennia Hero:

Single

Mi 8 Explorer:

Dual
Depth

Mi 8 Explorer: 3.4 mm thinner

Millennia Hero:

11 mm

Mi 8 Explorer:

7.6 mm
Height

Millennia Hero: 29.9 mm shorter

Millennia Hero:

125 mm

Mi 8 Explorer:

154.9 mm

Physical size

Relative size, not calibrated actual size. Front and side outlines share one scale and a bottom baseline. Generic outlines use recorded body dimensions, excluding camera bumps.

1. Millennia Hero

Height:

125 mm
Width:

64 mm
Depth:

11 mm +3.4 mm versus Mi 8 Explorer
2. Mi 8 Explorer

Height:

154.9 mm +29.9 mm versus Millennia Hero
Width:

74.8 mm +10.8 mm versus Millennia Hero
Depth:

7.6 mm

Weight

Bars start at zero and share a scale within this chart.

1. Millennia Hero

113 g
2. Mi 8 Explorer

177 g

+64 g versus Millennia Hero

Screen size

Approximate rectangular screens calculated from recorded diagonal and aspect ratio at one relative scale. Rounded corners and cutouts are not subtracted. These are not phone outlines or calibrated actual sizes.

At least two phones need compatible screen dimensions for a drawing.

1. Millennia Hero

Screen diagonal:

4 in

Aspect ratio (height:width):

5:3

Approximate rectangular screen area:

45.5 cm²
2. Mi 8 Explorer

Mi 8 Explorer: Screen geometry unavailable or conflicting.

Memory variants

Each row compares the same storage capacity. Cells show recorded RAM alternatives, not combined maxima. Not recorded does not mean unavailable in every market.

Recorded RAM for Millennia Hero, Mi 8 Explorer, compared at the same storage capacity.
Storage	Millennia Hero	Mi 8 Explorer
8 GB	1 GB RAM	Not recorded
128 GB	Not recorded	8 GB RAM

Practical features

Explicit Yes and No values are shown directly. Qualified or regional records retain their details. Unknown means the record is missing.

1. Millennia Hero

NFC:: Unknown
Headphone jack:: Yes
Memory card support:: See details microSD · up to 32 GB

2. Mi 8 Explorer

NFC:: Yes
Headphone jack:: No
Memory card support:: No

Battery capacity

Capacity is not battery life. No endurance test is implied.

Recorded battery capacity

Bars start at zero and share a scale within this chart.

1. Millennia Hero

1700 mAh
2. Mi 8 Explorer

3000 mAh

+1300 mAh versus Millennia Hero

Specifications

Open a section for more detail. On narrow screens, swipe sideways or use Left/Right arrow keys while the table is focused. Unknown means missing data, not No. Recorded zero values are shown as recorded.

1. Millennia Hero2. Mi 8 Explorer

Everyday essentials

Everyday essentials — specifications for Millennia Hero, Mi 8 Explorer.
Specification	Millennia Hero	Mi 8 Explorer
Dimensions (HxWxD)	125 Х 64 Х 11 mm	154.9 Х 74.8 Х 7.6 mm
Weight	113 g	177 g
Technology	Unknown	Super AMOLED
Screen size	4" inch	6.21" inch
Screen resolution	480 x 800 px	1080 x 2248 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.	8 GB 1 GB RAM	128 GB 8 GB RAM
Memory card support	microSD up to 32 GB	No
Battery Capacity is not battery life. No endurance test is implied.	1700 mAh Li-Ion	3000 mAh Non-removable Li-Po
Operating system OS	Android 5.1 (Lollipop)	Android 8.1 (Oreo) upgradable to Android 9.0 (Pie); MIUI 10.1
Chipset	Unknown	Qualcomm SDM845 Snapdragon 845 (10 nm)
NFC	Unknown	Yes
Headphone jack	Yes	No

Display

Display — specifications for Millennia Hero, Mi 8 Explorer.
Specification	Millennia Hero	Mi 8 Explorer
Touchscreen	capacitive touchscreen	capacitive touchscreen
Display colors	Unknown	16M
Screen area	45.5 cm2	97.1 cm2
Screen format	5:3 (height:width)	Unknown
Screen to body ratio	56.9%	83.8%
PPI /points per inch/	233 PPI	0 PPI
Screen protection	Unknown	Corning Gorilla Glass 5

Camera and Video

Camera and Video — specifications for Millennia Hero, Mi 8 Explorer.
Specification	Millennia Hero	Mi 8 Explorer
Rear camera, main	5 MP Single	12 MP Dual
Camera specs	5 MP	12 MP f/1.8 1/2.55'' 1.4µm 4-axis OIS dual pixel PDAF -12 MP f/2.4 1/3.4'' 1.0µm AF 2x optical zoom
Functions	LED flash	Dual-LED flash HDR panorama
Video	Yes	1080p@30fps
Front camera, selfie	3.2 MP Single	20 MP Single
Specifications	3.2 MP	20 MP f/2.0 0.9μm

Performance

Performance — specifications for Millennia Hero, Mi 8 Explorer.
Specification	Millennia Hero	Mi 8 Explorer
Processor CPU	Quad-core 1.2 GHz	Octa-core (4x2.8 GHz Kryo 385 Gold & 4x1.8 GHz Kryo 385 Silver)
Graphics processor GPU	Unknown	Adreno 630

General specs

General specs — specifications for Millennia Hero, Mi 8 Explorer.
Specification	Millennia Hero	Mi 8 Explorer
Release date	2015 August	2018 May
Colors	Black White/Gold White/Silver Black/Gold	Black (transparent back)
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.	Unknown	500 EUR
Body build	Unknown	Front/back glass aluminum frame (7000 series)

Communication and Connectivity

Communication and Connectivity — specifications for Millennia Hero, Mi 8 Explorer.
Specification	Millennia Hero	Mi 8 Explorer
SIM card	Dual SIM	Dual SIM (Nano-SIM dual stand-by)
Network	Show all network frequencies: -2G - GSM 900 / 1800 - SIM 1 & SIM 2	Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 CDMA 800 & TD-SCDMA -3G - HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 -4G - LTE band 1(2100) 2(1900) 3(1800) 4(1700/2100) 5(850) 7(2600) 8(900) 12(700) 17(700) 20(800) 34(2000) 38(2600) 39(1900) 40(2300) 41(2500)
Speed	HSPA	HSPA 42.2/5.76 Mbps LTE-A (4CA) Cat16 1024/150 Mbps
GPRS	Yes	Yes
Edge	Yes	Yes
Wi-Fi	Wi-Fi 802.11 b/g/n	Wi-Fi 802.11 a/b/g/n/ac dual-band Wi-Fi Direct DLNA hotspot
GPS	A-GPS	Yes with dual-band A-GPS GLONASS BDS GALILEO QZSS
USB	microUSB 2.0	Type-C 1.0 reversible connector
Bluetooth	2.0	5.0 A2DP LE aptX HD
Harmful irradiation	SAR EU - 0.34 W/kg (head) 0.76 W/kg (body)	Unknown

Music and Audio

Music and Audio — specifications for Millennia Hero, Mi 8 Explorer.
Specification	Millennia Hero	Mi 8 Explorer
Radio	FM radio	No
Others	Unknown	HDR10 -DCI-P3 Active noise cancellation with dedicated mic

Other features

Other features — specifications for Millennia Hero, Mi 8 Explorer.
Specification	Millennia Hero	Mi 8 Explorer
Dop	Sensors Accelerometer	Sensors Face ID fingerprint (under display) accelerometer gyro proximity barometer compass - Fast battery charging (Quick Charge 4.0+) - For China

Celkon Millennia Hero vs Xiaomi Mi 8 Explorer