Samsung Galaxy A21 vs Samsung Galaxy A40

A spec-by-spec comparison of the Samsung Galaxy A21 and the Samsung Galaxy A40, taken from their full specification sheets. Green marks the better value in each measured row.

Samsung Galaxy A21 smartphone

Samsung Galaxy A21

From $75
Full specs, price & review →
VS
Samsung Galaxy A40 smartphone

Samsung Galaxy A40

From $90
Full specs, price & review →

Head to head

Samsung Galaxy A21Samsung Galaxy A40
Price$75$90
Our rating6/107/10
Battery4,000 mAh3,100 mAh
Wired charging15W15W
RAM (max)3 GB4 GB
Storage (max)32 GB64 GB
Screen size6.5 in5.9 in
Main camera16 MP16 MP
Weight (lower is lighter)193 g140 g
ReleasedJun 2020Apr 2019
Summary: Samsung Galaxy A21 is ahead on battery, screen size. Samsung Galaxy A40 is ahead on our rating, ram (max), storage (max), weight (lower is lighter).
★ Which should you buy? Samsung Galaxy A40 is the stronger overall pick on the measured specs. If budget matters more than the extra capability, Samsung Galaxy A21 is the cheaper option.

Reviewed by the infozme.com Editorial Team — see how we research & rate phones.

Display

Samsung Galaxy A21Samsung Galaxy A40
TypeIPS LCDSuper AMOLED, Infinity-U
Size6.5 inches5.9 inches, 85.5 cm2 (~85.5% screen-to-body ratio)
Resolution720 x 1600 pixels, 20:9 ratio (~270 ppi density)1080 x 2340 pixels, 19.5:9 ratio (~437 ppi density)
ProtectionCorning Gorilla Glass—

Platform

Samsung Galaxy A21Samsung Galaxy A40
OSAndroid 10, One UI 2.0Android 9.0 (Pie), upgradable to Android 11, One UI 3.1
ChipsetMediaTek Helio P35 (MT6765)Exynos 7904 (14 nm)
CPUOcta-core (4x2.35 GHz Cortex-A53 & 4x1.8 GHz Cortex-A53)Octa-core (2x1.8 GHz Cortex-A73 & 6x1.6 GHz Cortex-A53)
GPUPowerVR GE8320Mali-G71 MP2

Memory

Samsung Galaxy A21Samsung Galaxy A40
Card slotmicroSDXC (dedicated slot)microSDXC (dedicated slot)
Internal32GB 3GB RAM64GB 4GB RAM

Main Camera

Samsung Galaxy A21Samsung Galaxy A40
Quad16 MP, f/1.8, (wide), AF; 8 MP, f/2.2, (ultrawide); 2 MP, f/2.4, (macro); 2 MP, f/2.4, (depth)—
FeaturesLED flash, panorama, HDRLED flash, panorama, HDR
Video1080p@30fps1080p@30fps
Modules—16 MP, f/1.7, (wide), PDAF; 5 MP, f/2.2, 12mm (ultrawide)

Selfie Camera

Samsung Galaxy A21Samsung Galaxy A40
Single13 MP, f/2.0, (wide)—
Video1080p@30fps1080p@30fps
Modules—25 MP, f/2.0

Battery

Samsung Galaxy A21Samsung Galaxy A40
TypeLi-Po 4000 mAh, non-removableLi-Po 3100 mAh, non-removable
Charging15W wired15W wired

Body

Samsung Galaxy A21Samsung Galaxy A40
Dimensions167.8 x 76.7 x 8.1 mm144.4 x 69.2 x 7.9 mm (5.69 x 2.72 x 0.31 in)
Weight193 g140 g (4.94 oz)
SIMSingle SIM (Nano-SIM) or Dual SIM (Nano-SIM, dual stand-by)Single SIM (Nano-SIM) or Dual SIM (Nano-SIM, dual stand-by)
BuildGlass front (Gorilla Glass), plastic back, plastic frame—

Comms

Samsung Galaxy A21Samsung Galaxy A40
WLANWi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi DirectWi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct
Bluetooth5.0, A2DP, LE5.0, A2DP, LE
PositioningGPS, GLONASS, GALILEO, BDSGPS, GLONASS, BDS, GALILEO
NFCYesYes
RadioFM radioFM radio
USBUSB Type-C 2.0USB Type-C 2.0

Launch

Samsung Galaxy A21Samsung Galaxy A40
AnnouncedApril 20202019, March 19
StatusReleased June 26, 2020Available. Released 2019, April 10

Frequently asked questions

Which has the better battery, Samsung Galaxy A21 or Samsung Galaxy A40?

Samsung Galaxy A21 — 4,000 mAh for the Samsung Galaxy A21 versus 3,100 mAh for the Samsung Galaxy A40.

Which has more RAM, Samsung Galaxy A21 or Samsung Galaxy A40?

Samsung Galaxy A40 — 3 GB for the Samsung Galaxy A21 versus 4 GB for the Samsung Galaxy A40.

Which is lighter, Samsung Galaxy A21 or Samsung Galaxy A40?

Samsung Galaxy A40 — 193 g for the Samsung Galaxy A21 versus 140 g for the Samsung Galaxy A40.

Which is newer, Samsung Galaxy A21 or Samsung Galaxy A40?

Samsung Galaxy A21 — Jun 2020 for the Samsung Galaxy A21 versus Apr 2019 for the Samsung Galaxy A40.

Is the Samsung Galaxy A21 or the Samsung Galaxy A40 rated higher?

We rate the Samsung Galaxy A21 6/10 and the Samsung Galaxy A40 7/10.

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