HTC J vs Oppo A31

Compare recorded specifications, size and practical differences.

HTC J

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Oppo A31

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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.

Display technologyOLED versus LCDJ: OLED · A31: LCD
WeightJ: 43 g lighterJ: 137 g · A31: 180 g
WidthJ: 9.5 mm narrowerJ: 66 mm · A31: 75.5 mm
Screen diagonalJ: 2.2 in smaller diagonalJ: 4.3 in · A31: 6.5 in
Rear camera layoutSingle / TripleJ: Single · A31: Triple
DepthA31: 1.2 mm thinnerA31: 8.3 mm · J: 9.5 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.

Front

Side

1. J
Height
131.5 mm
Width
66 mm
Depth
9.5 mm

Weight
137 g
2. A31
Height
163.9 mm
Width
75.5 mm
Depth
8.3 mm

Weight
180 g

Specifications

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Everyday essentials

Everyday essentials
Specification	J	A31
Dimensions (HxWxD)	131.5 Х 66 Х 9.5 mm	163.9 Х 75.5 Х 8.3 mm
Weight	137 g	180 g
Technology	AMOLED	IPS LCD
Screen size	4.3" inch	6.5" inch
Screen resolution	540 x 960 px	720 x 1600 px
Internal memoryRecorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.	16 GB 1 GB RAM	128GB 4GB RAM
Memory card support	microSD up to 32 GB (dedicated slot)	microSDXC (dedicated slot)
BatteryCapacity is not battery life. No endurance test is implied.	1810 mAh Removable Li-Ion	4230 mAh Non-removable Li-Po
Operating system OS	Android 4.0.4 (Ice Cream Sandwich); Sense UI 4	Android 9.0 (Pie); ColorOS 6.1
Chipset	Unknown	Mediatek MT6765V/CB Helio P35 (12nm)
Headphone jack	Yes	Yes

Display

Display
Specification	J	A31
Touchscreen	capacitive touchscreen	capacitive touchscreen
Display colors	16M	16M
Screen area	51.0 cm2	102.0 cm2
Screen format	16:9 (height:width)	20:9 (height:width)
Screen to body ratio	58.7%	82.4%
PPI /points per inch/	256 PPI	270 PPI

Camera and Video

Camera and Video
Specification	J	A31
Rear camera, main	8 MP Single	12 MP Triple
Camera specs	8 MP AF	12 MP f/1.8 (wide) PDAF -2 MP f/2.4 27mm (macro) 1/5.0'' 1.75µm -2 MP (depth)
Functions	LED flash	HDR
Video	720p	1080p@30fps
Front camera, selfie	1.3 MP Single	8 MP Single
Specifications	1.3 MP	8 MP f/2.0

Performance

Performance
Specification	J	A31
Processor CPU	Dual-core 1.5 GHz	Octa-core (4x2.3 GHz Cortex-A53 & 4x1.8 GHz Cortex-A53)
Graphics processor GPU	Unknown	PowerVR GE8320
Antutu 8 scoreLegacy recorded score. Test conditions are unspecified; no new testing is implied.	Unknown	105221

General specs

General specs
Specification	J	A31
Release date	2012 April	2020 February 13
Colors	Black White Red	Fantasy White Mystery Black
Historical recorded priceLegacy catalogue value; date unknown. Not a current offer.	220 EUR	180 EUR
Body build	Unknown	Glass front plastic back plastic frame

Communication and Connectivity

Communication and Connectivity
Specification	J	A31
SIM card	Mini-SIM	Dual SIM (Nano-SIM dual stand-by)
Network	Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 CDMA 800	Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 -3G - HSDPA 850 / 900 / 2100 -4G - LTE (unspecified)
Speed	HSPA	HSPA 42.2/5.76 Mbps LTE-A
GPRS	Yes	Yes
Edge	Yes	Yes
Wi-Fi	Wi-Fi 802.11 a/b/g/n dual-band DLNA hotspot; WiMAX 802.16 e	Wi-Fi 802.11 a/b/g/n/ac dual-band Wi-Fi Direct hotspot
GPS	Yes with A-GPS	Yes with A-GPS BDS
USB	microUSB 2.0	microUSB 2.0 USB On-The-Go
Bluetooth	4.0 A2DP	5.0 A2DP LE

Music and Audio

Music and Audio
Specification	J	A31
Radio	No	FM radio
Others	Beats Audio -Active noise cancellation with dedicated mic	480 nits typ. brightness

Other features

Other features
Specification	J	A31
Dop	Sensors Accelerometer gyro proximity compass - MP3/AAC+/WAV/WMA player -MP4/H.264/WMV player -Organizer -Document viewer -Photo viewer/editor -Voice memo/dial/commands -Predictive text input	Sensors Fingerprint (rear-mounted) accelerometer proximity compass