Category Breakdown
BLU Studio 5.5 HD
HMD Key
Performance
35.452.4
Camera
19.139.6
Display
56.569.2
Battery
21.828.1
Build
0.20.2
Connectivity
31.047.9
Audio
8.98.9
Overall
24.141.5
Summary
- The BLU Studio 5.5 HD features a 5.5-inch IPS LCD display with a resolution of 720 x 1280 pixels, while the HMD Key has a larger 6.52-inch IPS LCD with a resolution of 576 x 1280 pixels, resulting in lower pixel density.
- In terms of performance, the BLU is powered by a Quad-core Cortex-A7 CPU with 1GB RAM, whereas the HMD Key utilizes a more efficient Quad-core Cortex-A53 CPU with 2GB RAM.
- The camera on the HMD Key is superior, offering an 8 MP rear camera compared to the 5 MP on the BLU.
- Battery capacity is also significantly higher in the HMD Key at 4000 mAh versus the 2500 mAh of the BLU, and it supports faster charging at 10W.
- Finally, the HMD Key runs on Android 14 (Go edition), providing a more updated software experience compared to the Android 5.1 (Lollipop) on the BLU Studio 5.5 HD.
Side-by-side Specification Comparison
BLU Studio 5.5 HD
HMD Key
General
Release Date
2016
2025, January 02
Announced
2016
2025, January 02
Description
N/A
N/A
Display
Size
5.5"
6.52"
Type
IPS LCD
IPS LCD, 460 nits (peak)
Resolution
720 x 1280 pixels, 16:9 ratio (~267 ppi density)
576 x 1280 pixels, 20:9 ratio (~215 ppi density)
PPI
720
576
Refresh Rate
60Hz
60Hz
HDR Support
✗
✗
Protection
N/A
N/A
Performance
Chipset
N/A
Unisoc SC9832E
CPU
Quad-core 1.3 GHz Cortex-A7
Quad-core 1.3 GHz Cortex-A53
GPU
Mali-400
Mali-820MP1
Memory
8GB 1GB RAM
32GB 2GB RAM
Expandable Storage
✗
✗
Card Slot
microSDXC (dedicated slot)
microSDXC (uses shared SIM slot)
Camera
Main Camera
5 MP, f/2.4, 1/4.0", AF
8 MP, (wide), AF
Main Camera Features
LED flash
LED flash, panorama
Front Camera
5 MP
5 MP
Front Camera Features
N/A
N/A
Video Recording
1080p@30fps
Yes
Selfie Video
N/A
Yes
Optical Stabilization
✗
✗
Night Mode
✗
✗
Raw Photo Support
✗
✗
Battery
Capacity
2500 mAh
4000 mAh
Battery Details
Li-Po 2500 mAh, removable
4000 mAh
Charging Details
N/A
10W wired
Fast Charging
✗
✗
Wireless Charging
✗
✗
Build & Safety
Dimensions
153.8 x 77.4 x 9.1 mm (6.06 x 3.05 x 0.36 in)
166.4 x 76.9 x 9 mm (6.55 x 3.03 x 0.35 in)
Weight
183 g
185.4 g
Materials
N/A
N/A
Colors
Black, White, Gold
Black, Blue
Foldable
✗
✗
SAR
N/A
N/A
Connectivity
SIM
Dual SIM (Micro-SIM/ Mini-SIM, dual stand-by)
Nano-SIM
Network
GSM / HSPA
GSM / HSPA / LTE
Network Speed
HSPA 21.1/5.76 Mbps
HSPA, LTE
5G
✗
✗
4G
✗
✓
WiFi
Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot
Wi-Fi 802.11 b/g/n
Bluetooth
4.0, A2DP
4.2, A2DP, LE
NFC
✗
✗
USB
microUSB 2.0
USB Type-C
IR Blaster
✗
✗
Headphone Jack
✓
✓
Radio
✗
✗
Positioning
GPS
GPS, GALILEO
Audio
Stereo Speakers
✗
✗
Loudspeaker
Yes
Yes
Audio Jack
Yes
Yes
Software & Security
Operating System
Android 5.1 (Lollipop)
Android 14 (Go edition)
Fingerprint
✗
✗
Face Unlock
✗
✗
Sensors
Accelerometer, proximity
Accelerometer, proximity

