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Nokia Lumia 638 vs Tecno Camon 50 Ultra

2G Network GSM 850 / 900 / 1800 / 1900 SIM1: GSM 850 / 900 / 1800 / 1900SIM2: GSM 850 / 900 / 1800 / 1900  
3G Network HSDPA 850 / 900 / 1900 / 2100 HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100  
4G Network LTE 1800 / 1900 / 2100 / 2300 / 2500 / 2600 LTE band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 20(800), 28(700), 38(2600), 40(2300), 41(2500)  
5G Network SA/NSA  
Dimensions 129.5 x 66.7 x 9.2 mm N/A  
Sim Type Nano-SIM + Nano-SIM  
Weight 136 g N/A  
Display Type IPS LCD capacitive touchscreen, 16M colors, ClearBlack display Curved AMOLED Capacitive Touchscreen   HDR image support, 144Hz  
Display Size 480 x 854 pixels, 4.5 inches (~218 ppi pixel density) 6.78 Inches   1208 x 2644 Pixels (~429 PPI)  
Multitouch Yes
Protection Corning Gorilla Glass 3 Unspecified  
Memory 8GB built-in 256GB Built-in, 12GB RAM  
Card slot microSD card (supports up to 128GB) Unspecified  
RAM 1GB RAM
GPRS Yes
WLAN WLAN (Wi-Fi 802.11 b/g/n Wi-Fi 802.11 a/b/g/n/ac, dual-band  
BlueTooth Bluetooth v4.0 with A2DP v5.3 with A2DP, LE  
USB USB (microUSB v2.0) USB Type-C 2.0, OTG  
NFC Yes  
GPS Yes Yes + A-GPS support  
Main Camera 5 MP, 2592 X 1936 pixels, autofocus, 1/4'' sensor size, geo-tagging, panorama, Video Triple Camera: 50 MP, f/1.8, 23mm (wide), 1/1.56", PDAF, OIS + 50 MP, f/2.4, 70mm (telephoto), AF, OIS, 3x optical zoom + 8 MP, f/2.2, 14mm, (ultrawide), Dual LED Flash   Panorama, HDR, Video (1080p@30fps)  
Front Camera 32 MP, f/2.5, (wide), Video (1080p@30fps)  
OS Microsoft Windows Phone 8.1 Android 16 OS, up to 3 major Android upgrades  
Chipset GPU: Adreno 30 Mediatek Helio MediaTek Dimensity 7400 UltimateUltimate (6 nm)  
Processor 1.2 GHz Quad-core Cortex-A7, Qualcomm Snapdragon 400 Octa-Core  
GPU GPU: Adreno 305 Arm Mali-G615 MC2  
Sensors Accelerometer Accelerometer, Compass, Fingerprint (under display, optical, Proximity  
Browser HTML5 HTML5  
Sound FM radio, 3.5mm audio jack, MP4/H.264/H.263/WMV player, MP3/WAV/eAAC+/WMA player, Video/photo editor, Games (built-in) 24-bit/192kHz Hi-Res audio, Speaker  Phone  
Colors Black Various  
Battery 1830 mAh 6500 mAh   - Fast battery 45W wired  
Misc GPS + A-GPS support and GLONASS, MicroSIM card support only, Active noise cancellation with dedicated mic, Document viewer/editor, Predictive text input, Speakerphone SMS(threaded view), MMS, Email, Push Mail, IM   IP68/IP69K dust tight and water resistant (high pressure water jets; immersible up to 2m for 30 min)