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Microsoft Lumia 640 XL vs Samsung Galaxy Z Flip 4

2G Network GSM 850 / 900 / 1800 / 1900 SIM1: GSM 850 / 900 / 1800 / 1900  
3G Network HSDPA 850 / 900 / 1900 / 2100 HSDPA 850 / 900 / 1900 / 2100  
4G Network LTE band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 12(700), 13(700), 14(700), 17(700), 18(800), 19(800), 20(800), 25(1900), 26(850), 28(700), 29(700), 30(2300), 34(2000), 38(2600), 39(1900), 40(2300), 41(2500), 46(5200), 66(1700/2100), 71(600)  
5G Network SA/NSA/Sub6/mmWave  
Dimensions 157.9 x 81.5 x 9 mm Unfolded: (165.2 x 71.9 x 6.9 mm), Folded: (84.9 x 71.9 x 15.9-17.1 mm)  
Sim Type eSIM (Nano-SIM)  
Weight 171 g 87 g  
Display Type IPS LCD capacitive touchscreen, 16M colors, ClearBlack display Foldable Dynamic AMOLED 2X Capacitive Touchscreen, Multitouch   120Hz, HDR10+, 1200 nits (peak) Cover display: Super AMOLED, 1.9 inches, 260 x 512 pixels, (Gorilla Glass Victus+)  
Display Size 5.7 inches (~69.1% screen to body ratio), 720 x 1280 pixels (~259 ppi pixel density) 6.7 Inches   1080 x 2640 Pixels (~426 PPI)  
Multitouch Yes
Protection Corning Gorilla Glass 3 To be confirmed  
Memory 8GB built-in 128/256/512GB Built-in, 8GB RAM, UFS 3.1  
Card slot microSD card (supports up to 128GB) No  
RAM 1GB RAM
GPRS Yes Yes
WLAN WLAN (Wi-Fi 802.11 b/g/n Wi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi Direct, hotspot  
BlueTooth Bluetooth v4.0 with A2DP v5.2 with A2DP, LE  
USB USB (microUSB v2.0) USB Type-C 2.0, USB On-The-Go  
NFC Yes  
GPS Yes Yes + AGPS, GLONASS, BDS, GALILEO  
Main Camera 13 MP, 4128 x 3096 pixels, Carl Zeiss optics, autofocus, LED flash, 1/3'' sensor size, Video (1080p@30fps), Dual 12 MP, f/1.8, 24mm (wide), Dual Pixel PDAF, OIS + 12 MP, f/2.2, (ultrawide), LED Flash   Geo-tagging, touch focus, HDR, panorama, Video (4K@30/60fps, 1080p@60/240fps, 720p@960fps, HDR10+)  
Front Camera 5 MP, 1080p 10 MP, f/2.4, 26mm (wide), HDR, Video (4K@30fps)  
OS Microsoft Windows Phone 8.1 with Lumia Denim Android 12 OS  
Chipset Qualcomm Snapd Qualcomm SM8475 Snapdragon 8+ Gen 1 (4 nm)  
Processor 1.2 GHz Quad-Core Cortex-A7 Octa-core (1 x 3.19 GHz Cortex-X2 + 3 x 2.75 GHz Cortex-A710 + 4 x 1.80 GHz Cortex-A510)  
GPU GPU: Adreno 305 Adreno 730  
Sensors Accelerometer, proximity, compass Accelerometer, Barometer, Compass, Fingerprint (side mounted), Gyro, Proximity  
Browser HTML5 HTML5  
Sound FM radio, 3.5mm audio jack, MP4/H.264/H.263/WMV player, MP3/WAV/eAAC+/WMA player, Video editor, Games (built-in) 32-bit/384kHz audio, Tuned by AKG, Speaker Phone  
Colors Matte cyan, Orange, Black, Matte white, Glossy white Bora Purple, Graphite, Pink Gold, Blue, Yellow, White, Navy, Khaki, Red  
Battery Talk-time up to 31 hrs 20 min 3000 mAh (Li-Po Non removable), 3700 mAh   - Fast charging 25W, 50% in 30 min (advertised), Fast wireless charging 15W, Reverse wireless charging 4.5W  
StandBy Time Stand-by up to 936 hrs
TalkTime Talk-time up to 31 hrs 20 min 3000 mAh
Misc GPS + A-GPS support and GLONASS, Micro-SIM card, Active noise cancellation with dedicated mic, Document viewer/editor, Speakerphone SMS(threaded view), MMS, Email, Push Mail, IM   Plastic front (opened), Glass back + Gorilla Glass Victus+), Aluminum frame, IPX8 water resistant (up to 1.5m for 30 mins), Armour aluminum frame with tougher drop and scratch resistance (advertised), Samsung Pay (Visa, MasterCard certified), Documet viewer, Photo video/editor