20points

HTC J Butterfly (HTL21)

HTC J Butterfly (HTL21)
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HTC J Butterfly (HTL21) review: specs and price

HTC J Butterfly (HTL21)
HTC J Butterfly (HTL21)

Why is HTC J Butterfly (HTL21) better than the average?

  • Pixel density
    440ppivs323.79ppi
  • Weight
    140gvs151.93g
  • Width
    71mmvs71.35mm
  • Bluetooth version
    4vs3.92
  • Volume
    92.39cm³vs10175.22cm³

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Top specs and features

relevant

Design

1.weight

140g

Best

Palm Phone

62.5g

2.thickness

9.1mm

Best

Asus Zenfone AR 64GB

4.6mm

3.width

71mm

Best

Vertu Signature for Bentley

42mm

4.height

143mm

Best

Motorola FlipOut

67mm

5.volume

92.39cm³

Best

Palm Phone

36.17cm³

relevant

Display

1.pixel density

440ppi

Best

Sony Xperia H8541

847ppi

2.screen size

5"

The bigger the screen size is, the better the user experience.

Best

Huawei Mate 20 X

7.2"

3.every pixel has three subpixels
HTC J Butterfly (HTL21)

The device has a display with three full subpixels per pixel, resulting in a sharp and crisp picture. Pixels in some displays (like AMOLED) share one subpixel to preserve space. This can result in a less crisp, slightly blurred image.

4.has a touch screen
HTC J Butterfly (HTL21)

You can operate the device easily, by pressing the screen with your fingers.

5.Has a curved display
HTC J Butterfly (HTL21)

A curved screen is designed to better fill a user's field of vision, giving the viewer a sense of being immersed in the image.

For example

ZTE Nubia X

relevant

Performance

1.RAM

2GB

Best

Vivo NEX 2

10GB

2.CPU speed

4 x 1.5GHz

Best

Meizu Pro 7 Plus 64GB

10 x 2.6GHz

3.has an external memory slot
HTC J Butterfly (HTL21)

The device has a standard memory slot (such as an SD or micro SD card slot) so that you can either extend the internal storage with affordable memory modules or you can retrieve data, such as photographs, easily from a memory card.

4.internal storage

16GB

Best

Smartisan Nut R1

1024GB

5.semiconductor size

28nm

A smaller size indicates that the process to create the chip is newer.

Best

Huawei Mate 20 X

7nm

6.GeekBench result

445

This is a cross-platform benchmark that measures the performance of the CPU. (Source: Primate Labs, 2018)

Best

ZTE Nubia Red Magic Mars (64GB / 6GB RAM)

9066

relevant

Cameras

1.megapixels

8.1MP

Best

Huawei Mate 20 X

40 & 20 & 8MP

2.front camera megapixels

2MP

Best

Wiko View2 Pro

16 & 16MP

3.has a flash
HTC J Butterfly (HTL21)

A flash is good for low-light environments, and can sometimes be used as flashlight.

4.has a front camera
HTC J Butterfly (HTL21)

A front camera, also called secondary camera, can be used for video chats/selfies.

5. more flash LEDs

1

Multi-LED camera flashes use LED lights which have different color temperatures (warm light and cool light), improving the color balance based on the conditions in which the photos are taken.

Best

Meizu 15 Lite

6

6.Has a dual-tone LED flash
HTC J Butterfly (HTL21)

A dual-tone flash has LED lights with different color temperatures, delivering a better color balance to photos and videos.

For example

Vivo NEX 2

relevant

Audio

1.has a socket for a 3.5 mm audio jack
HTC J Butterfly (HTL21)

With a standard mini jack socket, you can use the device with most headphones.

2.number of microphones

1

More microphones result in better sound quality and enable the device to filter out background noise.

Best

Motorola Moto Z3

4

3.has a radio
HTC J Butterfly (HTL21)

It works as an FM radio with included headsets

For example

Panasonic Eluga X1

relevant

Battery

1.battery power

2020mAh

Best

Energizer Power Max P16K Pro

16000mAh

2.has a removable battery
HTC J Butterfly (HTL21)

The battery is removable and can be replaced by the user if broken.

For example

Blu Advance L4

3.has a battery level indicator
HTC J Butterfly (HTL21)

An indicator shows you when the device has low battery.

4.has a rechargeable battery
HTC J Butterfly (HTL21)

The battery can be recharged and used over again.

relevant

Features

1.Has offline voice recognition
HTC J Butterfly (HTL21)

Offline voice recognition enables you to perform voice actions, like dictating texts or using various voice commands, without an internet connection.

2.Allows app installs on the device's external storage
HTC J Butterfly (HTL21)
3.Supports Java
HTC J Butterfly (HTL21)
4.Is free and open source
HTC J Butterfly (HTL21)

Anyone is free to use, copy, study, and change the software in any way, and the source code is openly shared so that people are encouraged to voluntarily improve the design of the software.

5.Has sharing intents
HTC J Butterfly (HTL21)

If an app has sharing capabilities and the developers have indicated it, the app will automatically appear in your list of sharing options. Some OS’s limit direct sharing options to a select few apps, which means you have to open apps separately in order to upload the files you want to share.

6.has GPS
HTC J Butterfly (HTL21)

GPS enables global positioning, useful in map, geo-tagging or navigation apps.

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