Compare Samsung Galaxy S21 5G vs OnePlus 9 - Phone rating

8.9 Samsung Galaxy S21 5G 8.8 OnePlus 9
Compare Samsung Galaxy S21 5G vs OnePlus 9 - Phone rating
8.4
7.9
8.8
5.2
9.7
8.3
4.9
9.6
8.4
5.8
5.2
9.3
7.7
5.9
204$
Aliexpress
Aliexpress 		237.6$
Aliexpress
Aliexpress

Pros and cons

Why chose a Samsung Galaxy S21 5G
  • Samsung Galaxy S21 5G screen shows on 4% less grainy image then OnePlus 9. It`s pixel density is 418 ppi vs 402 ppi.
  • Samsung Galaxy S21 5G on 34$ cheaper then OnePlus 9. At June 2025 it costs on Aliexpress 204$ vs 238$.
  • Samsung Galaxy S21 5G supports more frequency bands than OnePlus 9. 50 vs 48 bands.
  • Samsung Galaxy S21 5G camera has on 28% bigger resolution then OnePlus 9. It`s main camera has 64 MP vs 50 MP.
    		•
    Why chose a OnePlus 9
  • OnePlus 9 has on 4% bigger screen then Samsung Galaxy S21 5G. It`s diagonal is 6.55 inch vs 6.3 inch.
    		•

    Appearance

    Width
    71.2 milimeters
    74.2 milimeters
    Height
    151.7 milimeters
    160 milimeters
    Thickness
    7.93 milimeters
    8.73 milimeters
    Weight
    171 grams
    192 grams
    Materials
    Polycarbonate
    Plastic, Glass
    Colors
    Black, White, Pink, Violet
    Black, Blue, Violet
    Effective area
    88 percents
    87 percents
    Resistance certificate
    IP68
    Operating system
    Android 11
    Android 11
    Interface
    OxygenOS 11
    Google play
    Yes
    Yes

    Display

    Screen type
    Amoled
    Amoled
    Screen futures
    Hole-punch Notch, Refresh rate 120 Hz, Peak brightness - 1300 cd/m², Always-On Display, HDR10, Scratch resistant, Corning Gorilla Glass 7 Victus, Capacitive, Multi-touch, Frameless
    Hole-punch Notch, Refresh rate 120 Hz, HDR10, MEMC, Scratch resistant, 2.5D curved glass screen, Corning Gorilla Glass 5, Capacitive, Multi-touch, Frameless
    Aspect Ratio
    20 : 9
    20 : 9
    Screen resolution
    1080 x 2400
    1080 x 2400
    Resolution type
    FHD
    FHD
    Density
    418 ppi
    402 ppi

    Sound

    Audio futures
    DTS / DTS X, Hi-Res Audio, Noise cancellation microphone, Stereo Speakers
    Dolby Atmos, Noise cancellation microphone, Stereo Speakers, 3 microphones
    Headphone Jack
    No
    No
    Radio
    No
    No

    Connectivity

    NFC
    Yes
    Yes
    Voice over LTE
    Yes
    Yes
    PC sync
    Yes
    Yes
    OTA sync
    Yes
    Yes
    Tethering
    Yes
    Yes
    Sim cards
    Dual SIM
    Dual SIM
    Wi-Fi standards
    802.11a, 802.11b, 802.11g, 802.11n, 802.11n 5GHz, 802.11ac
    802.11a, 802.11b, 802.11g, 802.11n, 802.11n 5GHz, 802.11ac
    Wi-Fi futures
    Dual band, Wi-Fi Hotspot, Wi-Fi Direct, Wi-Fi Display
    Dual band, Wi-Fi Hotspot, Wi-Fi Direct, Wi-Fi Display, Wi-Fi MiMO
    Bluetooth version
    Bluetooth 5.0
    Bluetooth 5.2
    Navigation
    GPS, A-GPS, GLONASS, Beidou, Galileo
    GPS, A-GPS, GLONASS, Beidou, Galileo

    Performance

    Memory size
    8 Gigabytes
    8 Gigabytes
    RAM type
    RAM LPDDR5
    RAM LPDDR5
    CPU name
    Samsung Exynos 2100
    Qualcomm Snapdragon 888
    CPU cores
    1 cores Cortex X1 with speed 2.91 GHz
    3 cores Cortex A78 with speed 2.81 GHz
    4 cores Cortex A55 with speed 2.21 GHz
    GPU name
    ARM Mali-G78 MC14
    Adreno 660

    Storage

    Storage size
    128 Gigabytes
    128 Gigabytes
    ROM type
    UFS Storage 3.1
    UFS Storage 3.1
    Card slot
    No
    No

    Battery

    Battery capacity
    4500 mAh
    4500 mAh
    Battery type
    Li-Polymer
    Li-Polymer
    Battery futures
    Wireless charging, Reverse charging, Non-removable, Wireless charging 15W, Reverse wireless charging 4.5W
    Wireless charging, Non-removable, 15W Wireless charging
    USB Type C
    Yes
    Yes
    Fast charge
    Yes
    Yes

    Futures

    Fingerprint
    Yes
    Yes
    Fingerprint location
    In screen
    In screen
    Proximity
    Yes
    Yes
    Light sensor
    Yes
    Yes
    Accelerometer
    Yes
    Yes
    Gyroscope
    Yes
    Yes
    Cooling system
    No
    Yes
    Gaming buttons
    No
    No