Asus Zenfone 4 Pro ZS551KL vs BLU Vivo X Link

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

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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

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42.2 Mbps

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5.76 Mbps

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

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Yes

No

2017-8

2018-3

2017-10

2018-5

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Aluminum body

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

Mini-SIM

156.9 mm

45.8 mm

75.6 mm

54 mm

7.6 mm

13.9 mm

175 g

65 g

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IP54

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IP54

Moonlight white, Pure Black

Black, Rose Gold, Silver

AMOLED capacitive touchscreen

IPS LCD capacitive touchscreen

5.5 inches

1.1 inches

1080 x 1920 pixels

240 x 240 pixels

401 ppi

309 ppi

Corning Gorilla Glass 5

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Yes, max 10 fingers

Yes

Octa-core

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Quad-core 2.45 GHz Kryo

256 MHz

quad-core 1.9 GHz Kryo

Qualcomm MSM8998 Snapdragon 835

Mediatek MT2502

Adreno 540

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6 GB

4 MB

64, 128 GB

4 MB

microSD(uses second SIM slot)

No

256 GB

-

-

Yes

-

Yes

Android 7.1.1 (Nougat)

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Dual

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

16 MP, 50 mm

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

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laser/phase detection autofocus

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LED flash

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4-axis optical image stabilization

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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

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8 MP, f/1.9 , 22 mm, 1.4 µm

1080p

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Yes

No

Yes, dual speakers

Yes

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No

FM radio

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

Yes

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Yes

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Yes

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Type-C reversible connector

v5.0

v4.0

Yes

-

Yes

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Yes

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Yes

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Yes

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Yes

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Yes, with A-GPS

No

Yes

-

Yes

-

Yes

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SMS(threaded view)

SMS

MMS

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IM

-

Push Email

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

Accelerometer, heart rate

HTML5

-

-

No

Li-Ion

Li-Po

3600 mAh

320 mAh

50% in 32 min

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27 h 30 min

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