Asus Zenfone 4 Pro ZS551KL vs BLU Bold N1

Network
2G network

GSM 850, 900, 1800, 1900

GSM 850, 900, 1800, 1900
3G network

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

HSDPA 850, 900, 1700(AWS), 1900, 2100
4G network

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), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 12(700), 13(700), 17(700), 28(700)
HSDPA speed

42.2 Mbps

42.2 Mbps
HSUPA speed

5.76 Mbps

5.76 Mbps
LTE speed

-

LTE-A (2CA) Cat6, 300 Mbps download, 50 Mbps upload
LTE-A speed

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

-
GPRS

Yes

Yes
EDGE

Yes

Yes

Design
Build

-

Aluminium alloy, glass
SIM

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

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

156.9 mm

158.7 mm
Width

75.6 mm

74.1 mm
Thickness

7.6 mm

8.6 mm
Weight

175 g

182 g
Colors

Moonlight white, Pure Black

Black

Display
Display type

AMOLED capacitive touchscreen

AMOLED capacitive touchscreen
Physical size

5.5 inches

6.4 inches
Resolution

1080 x 1920 pixels

1080 x 2340 pixels
Pixel density

401 ppi

403 ppi
Display colors

16777216

16777216
Protection

Corning Gorilla Glass 5

Scratch resistant, 2.5D curved glass screen, Corning Gorilla Glass 5
Multitouch

Yes, max 10 fingers

Yes

Main camera
Camera type

Dual

Dual
Main camera

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

16 MP, f/1.8 , 1/2.8"
16 MP, 50 mm

5 MP, f/2.2 , 1/5"
Primary camera resolution

-

4608 x 3456 pixels
Primary camera video

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

1080p@30fps
Primary camera Autofocus

laser/phase detection autofocus

-
Primary camera flash

LED flash

LED flash
Primary camera optical image stabilization

4-axis optical image stabilization

-
Camera features

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, digital zoom, geotagging, panorama, HDR, touch focus, face detection, white balance settings, exposure compensation, self-timer, scene-mode, night mode, phase detection

Connectivity
WLAN

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

Wi-Fi 802.11a, 802.11b, 802.11g, 802.11n, 802.11n 5Ghz, 802.11ac
WLAN WiFi Hotspot

Yes

Yes
WLAN WiFi Direct

Yes

Yes
Wi-Fi display

-

Yes
WLAN WiFi Dual Band

Yes

Yes
USB

Type-C reversible connector

Type-C 1.0 reversible connector
USB On-The-Go

-

Yes
Bluetooth

v5.0

v4.2
Bluetooth A2DP

Yes

Yes
bluetooth LE

Yes

Yes
Bluetooth EDR

Yes

-
Bluetooth AptX

Yes

-
Infrared

Yes

-
NFC

Yes

-
GPS

Yes, with A-GPS

Yes, with A-GPS
GLONASS

Yes

Yes
GALILEO

Yes

-
BDS

Yes

-

Features
Messaging SMS

SMS(threaded view)

-
Messaging MMS

MMS

-
Messaging Email

Email

-
Messaging IM

IM

-
Messaging Push Email

Push Email

-
Java

No

-
Sensors

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

Accelerometer, fingerprint, light, proximity, in-display fingerprint sensor