Celkon A77
#8255
ZTE Open II
#10044Category Breakdown
Celkon A77
ZTE Open II
Performance
57.351.3
Camera
41.941.9
Display
57.057.0
Battery
43.543.5
Build
70.870.8
Overall
52.650.9
Summary
- The Celkon A77 and ZTE Open II both feature a 3.5-inch TFT display, but the Open II offers a higher resolution of 320 x 480 pixels, resulting in a sharper image.
- In terms of performance, the Open II is powered by a Qualcomm Snapdragon 200 chipset with a dual-core 1.2 GHz CPU and 2GB of RAM, significantly outperforming the A77's single-core 1.0 GHz CPU and 0GB of RAM.
- Both devices have a 2 MP rear camera, but neither offers advanced features like OIS.
- The A77 has a slightly larger battery capacity at 1300 mAh compared to the Open II's 1150 mAh.
- Build quality is similar, with both phones having the same dimensions but the Open II is thinner and lighter.
- Finally, the A77 runs on Android 2.3, while the Open II utilizes Firefox OS 1.3, providing different software experiences.
Side-by-side Specification Comparison
Celkon A77
ZTE Open II
General
Release Date
2012
2014
Announced
2012
2014
Description
N/A
N/A
Display
Size
3.5"
3.5"
Type
TFT
TFT
Resolution
320 x 420 pixels, 4:3 ratio (~151 ppi density)
320 x 480 pixels, 3:2 ratio (~165 ppi density)
PPI
320
320
Refresh Rate
60Hz
60Hz
Peak Brightness
N/A
N/A
HDR Support
✗
✗
Protection
N/A
N/A
Performance
Chipset
N/A
Qualcomm MSM8210 Snapdragon 200 (28 nm)
CPU
1.0 GHz
Dual-core 1.2 GHz Cortex-A7
GPU
N/A
Adreno 302
Memory
N/A
2GB 256MB RAM
Expandable Storage
✗
✗
Card Slot
microSDHC (dedicated slot)
microSDHC (dedicated slot)
Camera
Main Camera
2 MP
2 MP
Main Camera Details
2 MP
2 MP
Front Camera
N/A
N/A
Front Camera Details
Yes
N/A
Video Recording
Yes
Yes
Selfie Video
N/A
N/A
OIS
✗
✗
Night Mode
✗
✗
RAW Support
✗
✗
Battery
Capacity
1300 mAh
1150 mAh
Battery Details
Li-Ion 1300 mAh battery
Li-Ion 1150 mAh, removable
Charging Details
N/A
N/A
Fast Charging
✗
✗
Wireless Charging
✗
✗
Build & Design
Dimensions
118 x 61 x 13.5 mm (4.65 x 2.40 x 0.53 in)
118 x 61 x 10.5 mm (4.65 x 2.40 x 0.41 in)
Weight
104 g
N/A
Materials
N/A
N/A
Water Resistance
N/A
N/A
Colors
White, Black
Black
Foldable
✗
✗
Connectivity
SIM
Dual SIM (Mini-SIM)
Micro-SIM
Network
GSM
GSM / HSPA
Network Speed
N/A
HSPA
5G
✗
✗
4G
✗
✗
WiFi
Wi-Fi 802.11 b/g/n
Wi-Fi 802.11 b/g/n, hotspot
Bluetooth
Yes
2.1
NFC
✗
✗
USB
microUSB 2.0
microUSB 2.0
IR Blaster
✗
✗
Headphone Jack
✓
✓
Radio
✗
✗
Positioning
No
N/A
Software
Operating System
Android 2.3 (Gingerbread)
Firefox OS 1.3
OS Version
Android 2.3 (Gingerbread)
Firefox OS 1.3
Security
Fingerprint
✗
✗
Face Unlock
✗
✗
Sensors
Accelerometer
Accelerometer
Audio
Stereo Speakers
✗
✗
Loudspeaker
Yes
Yes
Audio Jack
Yes
Yes