Asus Zenfone 4 Pro ZS551KL vs BLU Studio XL2

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

HSDPA 850, 1700(AWS), 1900, 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 2(1900), 4(1700/2100), 7(2600), 12(700), 17(700)

5.76 Mbps

11.5 Mbps

-

LTE, Cat4, 150 Mbps download, 50 Mbps upload

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

-

2017-8

2016-11

2017-10

2016-11

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

Dual SIM (Micro-SIM, dual stand-by)

156.9 mm

165.7 mm

75.6 mm

83.6 mm

7.6 mm

9.1 mm

175 g

200 g

Moonlight white, Pure Black

Gold, Gray, Rose Gold

AMOLED capacitive touchscreen

IPS LCD capacitive touchscreen

5.5 inches

6.0 inches

1080 x 1920 pixels

720 x 1280 pixels

401 ppi

245 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 ARM

quad-core 1.9 GHz Kryo

Qualcomm MSM8998 Snapdragon 835

Mediatek MT6737

Adreno 540

Mali-T720

6 GB

2 GB

64, 128 GB

16 GB

microSD(uses second SIM slot)

microSD

256 GB

64 GB

Android 7.1.1 (Nougat)

Android OS, v6.0 (Marshmallow)

Dual

-

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

13 MP, f/2.2

16 MP, 50 mm

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

1080p@30fps

laser/phase detection autofocus

autofocus

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

Geo-tagging, face detection, panorama, touch focus

-

LED flash

8 MP, f/1.9 , 22 mm, 1.4 µm

5 MP

1080p

-

Yes, dual speakers

Yes

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

Wi-Fi 802.11b, 802.11g, 802.11n

Yes

-

Type-C reversible connector

microUSB 2.0

-

Yes

v5.0

v4.1

Yes

-

Yes

-

Yes

-

Yes

-

Yes

-

Yes

-

Yes

-

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

Accelerometer, proximity

Li-Ion

Li-Po

3600 mAh

4900 mAh

50% in 32 min

-

-

68 h

27 h 30 min

46 h

-

800 h

-

700 h