Screen size
CS21.7"
Fire 5 UltraWinner: 6.6"+74%
Quick verdict
Fire 5 Ultra leads the measured specs 15-2.
Measured wins
CS2
2
spec wins
Ties
3
equal specs
Fire 5 Ultra
15
spec wins
Overall winner
Screen size
Technology
CS2
No cellular connectivity
Fire 5 Ultra
GSM / HSPA / LTE
2G bands
CS2
N/A
Fire 5 Ultra
GSM 850 / 900 / 1800 / 1900
3G bands
CS2
N/A
Fire 5 Ultra
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
4G bands
CS2
N/A
Resolution
Refresh rate
Peak brightness
Pixel density
CPU speed
RAM
Storage
Main camera
Front camera
Battery
Wired charging
Weight
Thickness
IP rating
Wi‑Fi
Bluetooth
equal specsUSB
5G support
equal specsNFC
3.5mm jack
equal specsSD card
Stereo speakers
Fire 5 Ultra
1, 2, 3, 4, 5, 7, 8, 18, 19, 20, 25, 26, 28, 34, 38, 39, 40, 41, 66
GPRS
CS2
No
Fire 5 Ultra
-
EDGE
CS2
No
Fire 5 Ultra
-
Speed
CS2
-
Fire 5 Ultra
HSPA, LTE
Announced
CS2
2021, May
Fire 5 Ultra
2025, December
Status
CS2
Available. Released 2021, May
Fire 5 Ultra
Available. Released 2025, December
Dimensions
CS2
43.8 x 36.9 x 10.5 mm (1.72 x 1.45 x 0.41 in)
Fire 5 Ultra
176.5 x 82.5 x 18.7 mm (6.95 x 3.25 x 0.74 in)
Weight
CS2
35 g (1.23 oz)
Fire 5 Ultra
395 g (13.93 oz)
Build
CS2
Plastic frame, plastic back
Fire 5 Ultra
-
SIM
CS2
No
Fire 5 Ultra
Nano-SIM + Nano-SIM
Other
CS2
IP68 dust tight and water resistant (immersible up to 50m)
Fire 5 Ultra
IP68/IP69K dust tight and water resistant (high pressure water jets; immersible up to 1.5m for 30 min) Drop resistant up to 1.5m MIL-STD-810H compliant Dedicated flashlight (on the back)
Type
CS2
IPS LCD
Fire 5 Ultra
IPS LCD, 90Hz, 400 nits
Size
CS2
1.69 inches
Fire 5 Ultra
6.6 inches, 104.6 cm2 (~71.9% screen-to-body ratio)
Resolution
CS2
240 x 240 pixels (~201 ppi density)
Fire 5 Ultra
720 x 1612 pixels, 20:9 ratio (~267 ppi density)
Protection
CS2
-
Fire 5 Ultra
Mohs level 6
OS
CS2
Proprietary
Fire 5 Ultra
Android 15
Chipset
CS2
Realtek 8762C
Fire 5 Ultra
Mediatek Helio G81 (12 nm)
CPU
CS2
-
Fire 5 Ultra
Octa-core (2x2.0 GHz Cortex-A75 & 6x1.8 GHz Cortex-A55)
GPU
CS2
-
Fire 5 Ultra
Mali-G52 MC2
Card slot
CS2
No
Fire 5 Ultra
microSDXC (dedicated slot)
Internal
CS2
-
Fire 5 Ultra
256GB 8GB RAM
Other
CS2
No
Fire 5 Ultra
-
Loudspeaker
CS2
No
Fire 5 Ultra
Yes
3.5mm jack
CS2
No
Fire 5 Ultra
No
WLAN
CS2
No
Fire 5 Ultra
Wi-Fi 802.11 a/b/g/n/ac, dual-band
Bluetooth
CS2
5.0, A2DP, LE
Fire 5 Ultra
5.0, A2DP, LE
Positioning
CS2
No
Fire 5 Ultra
GPS, GLONASS, GALILEO, BDS
NFC
CS2
No
Fire 5 Ultra
Yes
Radio
CS2
No
Fire 5 Ultra
FM radio
USB
CS2
No
Fire 5 Ultra
USB Type-C
Sensors
CS2
Accelerometer, heart rate
Fire 5 Ultra
Fingerprint (side-mounted), accelerometer, proximity, compass
Type
CS2
Li-Ion 300 mAh
Fire 5 Ultra
13000 mAh
Charging
CS2
-
Fire 5 Ultra
18W wired
Colors
CS2
Black, Rose Gold, Silver
Fire 5 Ultra
Gray, Orange, Green
Price
CS2
About 40 EUR
Fire 5 Ultra
About 250 EUR
Single
CS2
-
Fire 5 Ultra
48 MP, f/1.8, (wide), AF
Features
CS2
-
Fire 5 Ultra
Dual-LED flash, HDR, panorama
Video
CS2
-
Fire 5 Ultra
1440p@30fps
Single
CS2
-
Fire 5 Ultra
8 MP, f/2.0, (wide)
Video
CS2
-
Fire 5 Ultra
1080p@30fps