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Compare 4 products

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Apple iPhone 4 Mobile Phone
Apple iPhone 4
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Apple iPhone 4S Mobile Phone
Apple iPhone 4S
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Nokia Lumia 520 Mobile Phone
Nokia Lumia 520
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Nokia Lumia 521 Mobile Phone
Nokia Lumia 521
Available colors
Editiorial reviews
19
4.3 out of 5
9 user ratings
5 stars
44 %
4 stars
55 %
3 stars
0 %
2 stars
0 %
1 stars
0 %
Read editorial reviews
18
4.2 out of 5
10 user ratings
5 stars
40 %
4 stars
50 %
3 stars
10 %
2 stars
0 %
1 stars
0 %
Read editorial reviews
19
3.4 out of 5
7 user ratings
5 stars
14 %
4 stars
71 %
3 stars
0 %
2 stars
0 %
1 stars
0 %
Read editorial reviews
8
8 editorial reviews
Check out our review of the Nokia Lumia 521; one of the most popular Windows Phone 8 smartphones of the year.Read more
Popular Hardware and Tech site AnandTech has reviewed the Nokia Lumia 521, available exclusively on T-Mobile in the US .Their view reinforces just how good a deal the handset is, and how effective the Windows Phone OS can be on low-end handsets.Read more
The Nokia Lumia 521 for T-Mobile is a good smartphone for a great price, as long as you don't mind Windows Phone's lack of apps.Read more
Read editorial reviews
User rating
41
4.3 out of 5
41 user ratings
5 stars
41 %
4 stars
43 %
3 stars
14 %
2 stars
0 %
1 stars
0 %
37
4.3 out of 5
37 user ratings
5 stars
48 %
4 stars
35 %
3 stars
16 %
2 stars
0 %
1 stars
0 %
38
4.2 out of 5
38 user ratings
5 stars
39 %
4 stars
39 %
3 stars
18 %
2 stars
2 %
1 stars
0 %
39
3.9 out of 5
39 user ratings
5 stars
15 %
4 stars
58 %
3 stars
23 %
2 stars
2 %
1 stars
0 %

Hardware

Operating systemApple iOS 7Apple iOS 9Windows Phone 8.1Windows Phone 8
CPU clock speed1.0 GHz1.0 GHz1.0 GHz1.4 GHz
CPU coresSingle-coreDual-coreDual-coreDual-core
CPU modelApple A4Apple A5 APL2498Qualcomm Snapdragon S4 MSM8227Qualcomm Snapdragon S4 MSM8227
GPU modelPowerVR SGX535PowerVR SGX543Qualcomm Adreno 305Qualcomm Adreno 305
RAM memory512 MB512 MB512 MB512 MB

Display

Screen size3.5 in3.5 in4.0 in4.0 in
Touchscreenyesyesyes
N/A
Number of colors16.7M16.7M16.7M16.7M
Panel typeLCDLCDLCDLCD
Resolution960 x 640 px960 x 640 px800 x 480 px800 x 480 px
TechnologyIPS TFTIPS TFTIPS TFTIPS LCD
Pixel density326.0 ppi326.0 ppi233.0 ppi235.0 ppi
Dual screen supportnonono
N/A
Scratch resistant displayyesyesyes
N/A
HDRnonono
N/A
Multi touchyesyesyesyes

Rear camera

Primary sensor resolution5.0 Mpx8.0 Mpx5.0 Mpx5.0 Mpx
Primary lens aperture2.8 f
N/A
2.4 f2.4 f
Video recordingyesyesyes
N/A
Highest video resolution1280 x 720 px1920 x 1080 px1280 x 720 px1280 x 720 px
Maximum FPS at the highest resolution30.0 fps30.0 fps30.0 fps
N/A
Autofocusyesyesyesyes
Digital zoomyesyes
N/A
N/A
Geo-taggingyesyesyesyes
HDR Captureyesyes
N/A
N/A
LED Flashyesyesyes
N/A
Touch focusyesyesyesyes
Primary sensor size
N/A
1/3.2"1/4"
N/A
Maximum FPS (regardless of res.)
N/A
30.0 fps30.0 fps
N/A
Max resolution (highest frame rate)
N/A
1920 x 1080 px
N/A
N/A
Face detection
N/A
yes
N/A
N/A
Panorama
N/A
yes
N/A
yes
Optical zoom
N/A
N/A
4x4x

Storage

Internal storage
  • 16 GB
  • 32 GB
  • 8 GB
  • 16 GB
  • 32 GB
  • 64 GB
  • 8 GB
8 GB
N/A
Memory card readernonoyesyes
Types of memory card supportedNo memory slotNo memory slotmicroSDmicroSD
Maximum card storage
N/A
N/A
64GB64GB

Design

Colour of product
  • Black
  • Blue
  • Brown
  • Grey
  • Pink
  • Red
  • Silver
  • White
  • Black
  • Silver
  • White
  • Black
  • Blue
  • White
  • Yellow
White
Material
  • Aluminum
  • Glass
  • Steel
  • Aluminum
  • Glass
  • Steel
  • Glass
  • Plastic
N/A
Water resistantnonono
N/A
Shock resistantnonono
N/A

Dimensions

Height4.54 in4.54 in4.72 in4.88 in
Width2.31 in2.31 in2.52 in2.52 in
Depth0.37 in0.37 in0.39 in0.39 in
Weight4.83 oz4.94 oz4.37 oz4.37 oz

Sensors

Accelerometeryesyesyesyes
Proximityyesyesyesyes
Digital compassyesyesyes
N/A
Ambient light sensoryesyesyesyes
Gyroscopeyesyesyes
N/A

Connectivity

Dual sim supportnononono
Sim card sizeMicro-SIMMicro-SIMMicro-SIMMicro-SIM
DLNA certifiednoyesno
N/A
Bluetoothyesyesyesyes
Bluetooth version2.1 EDR4.04.03.0 HS
Bluetooth profile
  • A2DP
  • AVRCP
  • A2DP
  • AVRCP
  • A2DP
  • A2DP
  • AVRCP
N/A
NFCnonono
N/A
Charging connection
  • Apple 30-pin
  • Lightning
  • Apple 30-pin
  • Lightning
USB
N/A
Headphone connection3.5 mm3.5 mm3.5 mm3.5 mm
Video outputManufacturer specificManufacturer specificNo
N/A
Bluetooth codec
N/A
SBC
N/A
N/A
USB version
N/A
N/A
2.0
N/A
USB On-The-Go (OTG)
N/A
N/A
no
N/A
Type of USB connector
N/A
N/A
N/A
Micro-USB

Cellular

Wireless network (Wi-Fi)yesyesyesyes
Wireless networking standard
  • 802.11b
  • 802.11g
  • 802.11n
  • 802.11b
  • 802.11g
  • 802.11n
  • 802.11a
  • 802.11b
  • 802.11g
  • 802.11n
N/A
Navigation systemA-GPSGLONASSGLONASSGPS
2G GSMyesyesyesyes
GSM frequencies
  • 850 MHz
  • 900 MHz
  • 1800 MHz
  • 1900 MHz
  • 2100 MHz
  • 850 MHz
  • 900 MHz
  • 1800 MHz
  • 1900 MHz
  • 850 MHz
  • 900 MHz
  • 1800 MHz
  • 1900 MHz
  • 850 MHz
  • 900 MHz
  • 1800 MHz
  • 1900 MHz
3G UMTSyesyesyes
N/A
UMTS frequences
  • 850 MHz
  • 900 MHz
  • 1900 MHz
  • 2100 MHz
  • 850 MHz
  • 900 MHz
  • 1900 MHz
  • 2100 MHz
2100 MHz
  • 850 MHz
  • 1700 MHz
  • 1900 MHz
  • 2100 MHz
4G LTEnononoyes
Mobile hotspotyesyesyes
N/A
Data transmission
N/A
HSPA+HSPA+HSPA+
CDMA frequences
N/A
  • 800 MHz
  • 1900 MHz
N/A
N/A

Battery

Replaceable batterynonoyes
N/A
Battery typeLithium ionLithium ionLithium ionLithium ion
Battery capacity1420.0 mAh1432.0 mAh1430.0 mAh1430.0 mAh
Standby time300.0 h200.0 h360.0 h400.0 h
Talk time7.0 h8.0 h14.0 h9.0 h
Fast chargingnonono
N/A
Wireless charging nonono
N/A

Often compared with Apple iPhone 4

Often compared with Apple iPhone 4S

Often compared with Nokia Lumia 520

Often compared with Nokia Lumia 521