Compare phones side by side

OnePlus 9

Samsung Galaxy A21
OnePlus 9
Samsung Galaxy A21

Released in March 2021. Features 6.55 inches screen with a resolution of 1,080 x 2,400 pixels and 402 ppi.

Octa-core processor Qualcomm Snapdragon 888 5G SM8350 with up to 12 GB memory and 256 GB storage. It has 4,500 mAh battery.

Released in June 2020. Features 6.5 inches screen with a resolution of 720 x 1,600 pixels and 270 ppi.

Octa-core processor MediaTek Helio P35 with up to 3 GB memory and 32 GB storage. It has 4,000 mAh battery.
Head to Head
  • Much better quality screen (33%)
  • OLED screen
  • Higher screen refresh rate
  • More memory
  • More storage
  • More processing power (9%)
  • Better battery capacity (11%)
  • Battery with better fast charging (77%)
  • It has 5G
  • Thinner (7%)
  • Probably more versatile rear camera
  • Probably better front camera

Prices Info

8 GB RAM + 128 GB
709.00 €
Amazon.es
12 GB RAM + 256 GB
809.00 €
Amazon.es

We don't have prices for this model

Specifications

OnePlus 9 Samsung Galaxy A21
Specifications
Brand OnePlus Samsung
Model - -
Release Date March 2021 June 2020
Operating System OxygenOS (Android 11) One UI (Android 10)
Dimensions
Size 160.0 x 74.2 x 8.7 mm
6.30 x 2.92 x 0.34 in		 167.8 x 76.7 x 8.1 mm
6.61 x 3.02 x 0.32 in
Weight 192 g
6.77 oz		 193 g
6.81 oz
Screen
Size 6.55 inches 6.5 inches
Resolution 1,080 x 2,400 pixels 720 x 1,600 pixels
PPI 402 270
Features OLED, 120Hz -
Cameras
Rear Triple camera
48 MP f/1.8 Wide
50 MP f/2.2 Ultra Wide
2 MP f/2.4 Macro		 Quad camera
16 MP f/1.8 Wide
8 MP f/2.2 Ultra Wide
2 MP f/2.4 Macro
2 MP f/2.4 Depth
Front 16 MP f/2.4 Wide 13 MP f/2.0 Wide
Storage
Memory 8 GB
12 GB		 3 GB
Fixed 128 GB
256 GB		 32 GB
Removable - microSDXC
Processor
Chip Qualcomm Snapdragon 888 5G SM8350
Octa-core processor
5 nm		 MediaTek Helio P35
Octa-core processor
12 nm
CPU 1x 2.84 GHz Kryo 680 Prime
3x 2.42 GHz Kryo 680 Gold
4x 1.80 GHz Kryo 680 Silver		 4x 2.35 GHz Cortex-A53
4x 1.80 GHz Cortex-A53
GPU Adreno 660 PowerVR GE8320
Battery
Capacity 4,500 mAh 4,000 mAh
Features Fast charging 65W Fast charging 15W
Removable False False
Connectivity
5G True False
NFC True True
3.5 mm Audio Jack False True
Micro USB False False
USB Type-C True True
Lightning False False

Size comparison

OnePlus 9 Samsung Galaxy A21

OnePlus 9

Samsung Galaxy A21

6.55"
192 g
6.77 oz

6.5"
193 g
6.81 oz