Asus Zenfone 4 Pro ZS551KL vs Bluboo D6 Pro

HSDPA 800, 850, 900, 1700(AWS), 1800, 1900, 2100

HSDPA 900, 2100

LTE frequency band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 17(700), 19(800), 20(800), 28(700), 38(2600), 39(1900), 40(2300), 41(2500) - Global, Taiwan; LTE frequency band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 12(700), 17(700), 18(800), 19(800), 20(800), 26(850), 28(700), 29(700), 30(2300), 38(2600), 39(1900), 41(2500) - US, Canada, Brazil; LTE frequency band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 12(700), 17(700), 18(800), 19(800), 20(800), 26(850), 28(700), 29(700), 30(2300), 38(2600), 39(1900), 40(2300), 41(2500) - India

LTE frequency band 1(2100), 3(1800), 5(850), 7(2600), 8(900), 18(800); LTE-TDD 2300, 2600 MHz

42.2 Mbps

21 Mbps

-

LTE, Cat4, 150 Mbps download, 51 Mbps upload

LTE-A, (3CA) Cat12, 600 Mbps download, 150 Mbps upload

-

2017-8

2018-12

2017-10

2018-12

-

Plastic

Hybrid Dual SIM (Nano-SIM, dual stand-by)

Dual SIM (Micro-SIM/Nano-SIM(microSD))

156.9 mm

145.2 mm

75.6 mm

71.2 mm

175 g

159 g

Moonlight white, Pure Black

Black, Blue, Red

AMOLED capacitive touchscreen

TFT

1080 x 1920 pixels

480 x 960 pixels

401 ppi

195 ppi

Corning Gorilla Glass 5

-

Yes, max 10 fingers

Yes

Octa-core

-

Quad-core 2.45 GHz Kryo

Quad-core 1.3 GHz Cortex-A53

quad-core 1.9 GHz Kryo

Qualcomm MSM8998 Snapdragon 835

MediaTek MT6739V

Adreno 540

PowerVR GE8100

6 GB

2 GB

64, 128 GB

16 GB

microSD(uses second SIM slot)

microSD, microSDHC, microSDXC

256 GB

32 GB

Android 7.1.1 (Nougat)

Android 8.1 Oreo

12 MP, f/1.7 , 25 mm, 2x optical zoom

5 MP

16 MP, 50 mm

5 MP

-

8 MP

-

2592 x 1944 pixels

2160p@30fps, 1080p@30/60fps, 1080p@120fps, 720p@240fps

720p@30fps

laser/phase detection autofocus

-

LED flash

dual-LED flash

4-axis optical image stabilization

-

25mm (1/2.55" sensor size, 1.4 µm pixel size), 50mm (1/3.1" sensor size, 1.0 µm pixel size), geo-tagging, touch focus, face detection, HDR, panorama

Autofocus, continuous shooting, digital zoom, geotagging, panorama, HDR, touch focus, face detection, white balance settings, ISO settings, exposure compensation, self-timer, scene-mode

8 MP, f/1.9 , 22 mm, 1.4 µm

5 MP, f/2.8

-

2592 x 1944 pixels

1080p

480p@30fps

Yes, dual speakers

Yes

Vibration; MP3, WAV ringtones

-

-

Yes

Wi-Fi 802.11a, 802.11b, 802.11g, 802.11n, 802.11ac

Wi-Fi 802.11b, 802.11g, 802.11n

Yes

-

Yes

-

Type-C reversible connector

microUSB 2.0

v5.0

v4.0

Yes

-

Yes

-

Yes

-

Yes

-

Yes

-

Yes

-

Yes

-

Yes

-

SMS(threaded view)

-

MMS

-

Email

-

IM

-

Push Email

-

No

-

Fingerprint (front-mounted), accelerometer, color spectrum, compass, gyro, proximity

Accelerometer, fingerprint, light, proximity

Li-Ion

Li-Po

3600 mAh

2700 mAh

Non-removable

Removable

50% in 32 min

-

27 h 30 min

-