Celkon A20 vs OnePlus 6T

Compare recorded specifications, size and practical differences.

Celkon A20

Replace A20

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OnePlus 6T

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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.

Screen diagonalA20: 2.41 in smaller diagonalA20: 4 in · 6T: 6.41 in
Rear camera layoutSingle / DualA20: Single · 6T: Dual
Release year2013 / 2018A20: 2013 · 6T: 2018

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.

Front

Side

1. A20
Height
Unknown
Width
Unknown
Depth
Unknown

Weight
Unknown

Unavailable dimensions are omitted from the drawing.
2. 6T
Height
157.5 mm
Width
74.8 mm
Depth
8.2 mm

Weight
185 g

Specifications

Open a section for more detail. Scroll inside a table to keep phone names visible; on narrow screens, swipe sideways or use the arrow keys while the table is focused. Unknown means missing data, not No. Recorded zero values are shown as recorded.

Everyday essentials

Everyday essentials
Specification	A20	6T
Dimensions (HxWxD)	Х Х mm	157.5 Х 74.8 Х 8.2 mm
Weight	0 g	185 g
Technology	TFT	Optic AMOLED
Screen size	4" inch	6.41" inch
Screen resolution	480 x 800 px	1080 x 2340 px
Internal memoryRecorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.	256 MB 512 MB RAM	256 GB 8 GB RAM 128 GB 6/8 GB RAM
Memory card support	microSD up to 32 GB (dedicated slot)	No
BatteryCapacity is not battery life. No endurance test is implied.	1500 mAh Li-Ion	3700 mAh Non-removable Li-Po
Operating system OS	Android 4.2.0 (Jelly Bean)	Android 9.0 (Pie); OxygenOS 9.0.5
Chipset	Unknown	Qualcomm SDM845 Snapdragon 845 (10 nm)
NFC	Unknown	Yes
Headphone jack	Yes	No

Display

Display
Specification	A20	6T
Touchscreen	capacitive touchscreen	capacitive touchscreen
Display colors	Unknown	16M
Screen area	45.5 cm2	100.9 cm2
Screen format	5:3 (height:width)	19.5:9 (height:width)
Screen to body ratio	Unknown	85.6%
PPI /points per inch/	233 PPI	402 PPI
Screen protection	Unknown	Corning Gorilla Glass 6

Camera and Video

Camera and Video
Specification	A20	6T
Rear camera, main	3.15 MP Single	16 MP Dual
Camera specs	3.15 MP	16 MP f/1.7 25mm (wide) 1/2.6'' 1.22µm OIS PDAF -20 MP (16 MP effective) 1/2.8'' 1.0µm PDAF
Functions	Unknown	Auto-HDR gyro-EIS
Video	Yes	1080p@30fps
Front camera, selfie	0.3 MP Single	16 MP Single
Specifications	VGA	16 MP f/2.0 25mm (wide) 1/3.1'' 1.0µm
DxOMark Main ScoreLegacy recorded score. Test conditions are unspecified; no new testing is implied.	Unknown	98
DxOMark PhotoLegacy recorded score. Test conditions are unspecified; no new testing is implied.	Unknown	101
DxOMark VideoLegacy recorded score. Test conditions are unspecified; no new testing is implied.	Unknown	91

Performance

Performance
Specification	A20	6T
Processor CPU	Dual-core 1.2 GHz	Octa-core (4x2.8 GHz Kryo 385 Gold & 4x1.7 GHz Kryo 385 Silver)
Graphics processor GPU	Unknown	Adreno 630
Antutu 7 scoreLegacy recorded score. Test conditions are unspecified; no new testing is implied.	Unknown	293212
GeekBench 4 Single CoreLegacy recorded score. Test conditions are unspecified; no new testing is implied.	Unknown	2372
GeekBench 4 Multi-CoreLegacy recorded score. Test conditions are unspecified; no new testing is implied.	Unknown	8842
GeekBench 4 RenderScriptLegacy recorded score. Test conditions are unspecified; no new testing is implied.	Unknown	13163
Antutu 8 scoreLegacy recorded score. Test conditions are unspecified; no new testing is implied.	Unknown	362575
GeekBench 5 Single CoreLegacy recorded score. Test conditions are unspecified; no new testing is implied.	Unknown	500
GeekBench 5 Multi-CoreLegacy recorded score. Test conditions are unspecified; no new testing is implied.	Unknown	2245

General specs

General specs
Specification	A20	6T
Release date	2013 August	2018 October
Colors	Black	Thunder Purple Mirror Black Midnight Black
Historical recorded priceLegacy catalogue value; date unknown. Not a current offer.	60 EUR	550 EUR
Body build	Unknown	Front/back glass aluminum frame

Communication and Connectivity

Communication and Connectivity
Specification	A20	6T
SIM card	Dual SIM (Mini-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 / 1900 & TD-SCDMA -3G - HSDPA 800 / 850 / 900 / 1700(AWS) / 1800 / 1900 / 2100 -4G - LTE band 1(2100) 2(1900) 3(1800) 4(1700/2100) 5(850) 7(2600) 12(700) 13(700) 17(700) 18(800) 19(800) 20(800) 25(1900) 26(850) 28(700) 29(700) 30(2300) 32(1500) 34(2000) 38(2600) 39(1900) 40(2300) 41(2500) 46 66(1700/2100) 71(600) - Europe North America LTE band 1(2100) 66(1700/2100) - India China
Speed	Yes 384 kbps	HSPA 42.2/5.76 Mbps LTE-A (5CA) Cat16 1024/150 Mbps
GPRS	Class 12	Yes
Edge	Class 12	Yes
Wi-Fi	Wi-Fi 802.11 b/g/n	Wi-Fi 802.11 a/b/g/n/ac dual-band WiFi Direct DLNA hotspot
GPS	No	Yes with A-GPS GLONASS BDS GALILEO
USB	microUSB 2.0	2.0 Type-C 1.0 reversible connector USB On-The-Go
Bluetooth	Yes	5.0 A2DP aptX HD LE
Harmful irradiation	SAR EU - 0.88 W/kg (head) 0.60 W/kg (body)	Unknown

Music and Audio

Music and Audio
Specification	A20	6T
Radio	Unknown	No
Others	Unknown	DCI-P3 Active noise cancellation with dedicated mic -Dirac HD sound

Other features

Other features
Specification	A20	6T
Dop	Sensors Proximity gyro	Sensors Fingerprint (under display) accelerometer gyro proximity compass - Fast battery charging 5V/4A 20W