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AT&T Z998 vs Samsung Galaxy S21 Ultra vs Samsung Galaxy S9+

Compare phone and tablet specifications of up to three devices at once.

Comparison mode:

Display

Size:

4.5 inches
6.8 inches
6.2 inches

Resolution:

960 x 540 pixels, 245 PPI
3200 x 1440 pixels, 20:9 ratio, 516 PPI
2960 x 1440 pixels, 18.5:9 ratio, 531 PPI

Technology:

TFT
Dynamic AMOLED
Super AMOLED

Refresh rate:

120Hz (adaptable)

Screen-to-body:

64.00 %
89.33 %
83.68 %

Peak brightness:

1500 cd/m2 (nit)

Touchscreen:

Capacitive, Multi-touch

Features:

Ambient light sensor, Proximity sensor
HDR support, Scratch-resistant glass (Corning Gorilla Glass Victus), Ambient light sensor, Proximity sensor
HDR support, Scratch-resistant glass (Corning Gorilla Glass 5), Ambient light sensor, Proximity sensor

Hardware

System chip:

Qualcomm Snapdragon S4 Plus MSM8930
Qualcomm Snapdragon 888
Qualcomm Snapdragon 845 SDM845

Processor:

Dual-core, 1200 MHz, Krait
Octa-core, 2840 MHz, Kryo 680, 64-bit, 5 nm
Octa-core, 2800 MHz, Kryo 385, 64-bit, 10 nm

GPU:

Adreno 305
Adreno 660
Adreno 630

RAM:

1GB LPDDR2
12GB LPDDR5
6GB LPDDR4

Internal storage:

4GB
128GB (UFS 3.1), not expandable
64GB

Storage expansion:

microSDHC up to 32 GB
microSDXC up to 400 GB

Device type:

Smartphone
Smartphone
Smartphone

OS:

Android (4.1)
Android (11), Samsung One UI
Android (10, 9.0 Pie, 8.0 Oreo), Samsung One UI

Battery

Capacity:

2070 mAh
5000 mAh
3500 mAh

Type:

User replaceable
Li - Polymer, Not user replaceable
Li - Ion, Not user replaceable

Charging:

Qualcomm Quick Charge 2.0, USB Power Delivery, Samsung Adaptive Fast Charging, Qi and Powermat wireless charging, Reverse wireless charging
Qualcomm Quick Charge 2.0, Samsung Adaptive Fast Charging, Qi and Powermat wireless charging

Max charge speed:

Wired: 25.0W; Wireless: 15.0W

Camera

Rear:

Single camera
Quad camera
Dual camera

Main camera:

5 MP
108 MP (OIS, Laser and PDAF)
12 MP (OIS, PDAF)

Specifications:

Aperture size: F1.8; Focal length: 24 mm; Sensor size: 1/1.33"; Pixel size: 0.8 μm
Aperture size: F1.5/F2.4; Focal length: 26 mm; Sensor size: 1/2.55"; Pixel size: 1.4 μm

Second camera:

10 MP (Telephoto, OIS, PDAF)
12 MP (Telephoto, OIS, Autofocus)

Specifications:

Optical zoom: 3.0x; Aperture size: F2.4; Focal Length: 70 mm; Sensor size: 1/3.2"; Pixel size: 1.22 μm
Optical zoom: 2.0x; Aperture size: F2.4; Focal Length: 52 mm; Sensor size: 1/3.6"; Pixel size: 1 μm

Third camera:

12 MP (Ultra-wide, PDAF)

Specifications:

Aperture size: F2.2; Focal Length: 13 mm; Sensor size: 1/2.55"; Pixel size: 1.4 μm

Fourth camera:

10 MP (Periscope, OIS, PDAF)

Specifications:

Optical zoom: 10.0x; Aperture size: F4.9; Focal Length: 240 mm; Sensor size: 1/3.2"; Pixel size: 1.22 μm

Video recording:

1280x720 (HD)
7680x4320 (8K UHD) (24 fps), 3840x2160 (4K UHD) (60 fps), 1920x1080 (Full HD) (240 fps), 1280x720 (HD) (960 fps)
3840x2160 (4K UHD) (60 fps), 1920x1080 (Full HD) (240 fps), 1280x720 (HD) (960 fps)

Features:

OIS, HDR, Hyperlapse, Video light, EIS
HDR, Time-lapse video, Hyperlapse, Continuous autofocus, Object tracking, Picture-taking during video recording, EIS, Video calling, Video sharing

Front:

Yes
40 MP (PDAF, HDR)
8 MP (Autofocus, HDR)

Video capture:

3840x2160 (4K UHD) (60 fps)
2560x1440 (QHD) (30 fps)

Design

Dimensions:

5.2 x 2.6 x 0.4 inches (132 x 66 x 10 mm)
6.50 x 2.98 x 0.35 inches (165.1 x 75.6 x 8.9 mm)
6.22 x 2.91 x 0.33 inches (158.1 x 73.8 x 8.5 mm)

Weight:

4.8 oz (136.0 g)
8.04 oz (229.0 g)
6.67 oz (189.0 g)

Materials:

Back: Glass (Corning Gorilla Glass Victus); Frame: Aluminum
Back: Glass (Corning Gorilla Glass 5); Frame: Aluminum

Resistance:

Water, Dust; IP68
Water, Dust; IP68

Biometrics:

2D Face unlock, Ultrasonic in-screen fingerprint
Iris scanner, 2D Face unlock, Fingerprint (touch)

Features:

Notification light

Keys:

Right: Volume control, Lock/Unlock key
Left: Volume control, Other; Right: Lock/Unlock key

Colors:

Black
Phantom black, Silver
Midnight black, Coral blue, Titanium gray, Lilac purple, Burgundy red, Sunrise gold, Ice blue, Polaris blue

Cellular

5G:

n2, n5, n12, n25, n41, n66, n71, n77, n260, n261, SA, NSA, Sub-6, mmWave

LTE (FDD):

Bands 17(700 b), 4(AWS-1)
Bands 1(2100), 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 8(900), 12(700 a), 13(700 c), 14(700 PS), 18(800 Lower), 19(800 Upper), 20(800 DD), 25(1900+), 26(850+), 28(700 APT), 30(2300 WCS), 66(AWS-3), 71(600)
Bands 1(2100), 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 8(900), 12(700 a), 13(700 c), 14(700 PS), 17(700 b), 18(800 Lower), 19(800 Upper), 20(800 DD), 25(1900+), 26(850+), 28(700 APT), 29(700 d), 30(2300 WCS), 66(AWS-3), 71(600)

LTE (TDD):

Bands 38(2600), 39(1900+), 40(2300), 41(2600+), 46, 48(3600)
Bands 38(2600), 39(1900+), 40(2300), 41(2600+), 46

UMTS:

Bands 5(850), 2(1900), 1(2100)
Bands 1(2100), 2(1900), 4(1700/2100), 5(850), 8(900)
Bands 5(850), 8(900), 4(1700/2100), 2(1900), 1(2100)

Data Speed:

LTE, HSPA
LTE-A, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s, UMTS
LTE-A Pro Cat 18 (1200/150 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA

SIM type:

Nano SIM
Nano SIM

Multimedia

Headphones:

3.5mm jack
No 3.5mm jack
3.5mm jack

Speakers:

Earpiece, Loudspeaker
Earpiece, Multiple speakers
Earpiece, Multiple speakers

Features:

Album art cover, Background playback
32-Bit DAC, Dolby Atmos, aptX, Dolby Digital, Dolby Digital Plus
32-Bit DAC, Dolby Atmos, aptX-HD

Screen mirroring:

Wireless screen share
Wireless screen share

Radio:

FM, Stereo, RDS
FM

Additional microphone(s):

for Noise cancellation, Video recording
for Noise cancellation

Connectivity & Features

Bluetooth:

4.0
5.1
5.0

Wi-Fi:

802.11 b, g, n; Hotspot
802.11 a, b, g, n, ac, ax (Wi-Fi 6), dual-band; MIMO, Wi-Fi Direct, Hotspot
802.11 a, b, g, n, ac, dual-band; MIMO, Wi-Fi Direct, Hotspot

USB:

microUSB, USB 2.0
Type-C (reversible), USB 3.2
Type-C (reversible), USB 3.1

Features:

Mass storage device, Charging
Charging, Headphones port, OTG, Video out
Charging, OTG, Video out

Location:

GPS, A-GPS
GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning
GPS, A-GPS, Glonass, Galileo, BeiDou

Sensors:

Accelerometer, Compass
Accelerometer, Gyroscope, Compass, Hall (for flip covers), Barometer
Accelerometer, Gyroscope, Compass, Hall (for flip covers), Barometer

Other:

Tethering, Computer sync, OTA sync
NFC, ANT+
NFC, ANT+

Hearing aid compatible:

M3, T4
M3, T3

Phone features

Notifications:

Haptic feedback, Music ringtones (MP3), Polyphonic ringtones, Vibration, Flight mode, Silent mode, Speakerphone

Other features:

Voice dialing, Voice commands, Voice recording, TTY/TDD

Regulatory Approval

FCC approval:

Date approved:

Oct 20, 2013
Dec 22, 2020
Jan 11, 2018

FCC ID value:

Q78-Z998
A3LSMG998U
A3LSMG965U

Measured SAR:

Head:

0.73 W/kg
0.77 W/kg
0.36 W/kg

Body:

1.33 W/kg
1.02 W/kg
0.79 W/kg

Simultaneous Transmission:

1.45 W/kg
1.59 W/kg
1.59 W/kg

Wireless Router:

1.38 W/kg
1.16 W/kg
1.04 W/kg

Phablet:

3.15 W/kg
3.94 W/kg

Buyers information

Price:

$ 1200
$ 840

In The Box:

C to C Data Cable, Ejection Pin

Availability

Officially announced:

Jan 14, 2021
Feb 25, 2018
FCC OKs Cingular\'s purchase of AT&T Wireless