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Realme C75 vs Samsung Galaxy S25 Ultra 512GB

2G Network SIM1: GSM 850 / 900 / 1800 / 1900SIM2: GSM 850 / 900 / 1800 / 1900   SIM1: GSM 850 / 900 / 1800 / 1900SIM2: GSM 850 / 900 / 1800 / 1900  
3G Network HSDPA 850 / 900 / 2100   HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100  
4G Network LTE band 1(2100), 3(1800), 5(850), 7(2600), 8(900), 34(2000), 38(2600), 39(1900), 40(2300), 41(2500)   LTE band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 12(700), 13(700), 17(700), 18(800), 19(800), 20(800), 25(1900), 26(850), 28(700), 32(1500), 38(2600), 39(1900), 40(2300), 41(2500), 66(1700/2100)  
5G Network SA/NSA/Sub6  
Dimensions 165.7 x 76.2 x 8 mm   162.8 x 77.6 x 8.2 mm  
Sim Type Dual Sim, Dual Standby (Nano-SIM)   Nano-SIM + Nano-SIM + eSIM + eSIM (max 2 at a time)  
Weight 196 g   219 g  
Display Type IPS LCD Capacitive Touchscreen, 16M Colors, Multitouch   Always-on display, 90Hz, 580 nits (typ), 690 nits (HBM)   Dynamic LTPO AMOLED 2X Capacitive Touchscreen   120Hz, HDR10+, 2600 nits (peak), Always-on display  
Display Size 6.72 Inches   1080 x 2400 Pixels (~392 PPI)   6.9 Inches   1440 x 3120 Pixels (~498 PPI)  
Protection ArmorShell glass   Corning Gorilla Armor 2  
Memory 128/256GB Built-in, 8GB RAM   512GB Built-in, 12GB RAM, UFS 4.0  
Card slot microSDXC (dedicated slot)   No  
WLAN Wi-Fi 802.11 a/b/g/n/ac, dual-band   Wi-Fi 802.11 a/b/g/n/ac/6e/7, tri-band, Wi-Fi Direct  
BlueTooth v5.0 with A2DP, LE   v5.4 with A2DP, LE  
USB USB Type-C 2.0   USB Type-C 3.2, DisplayPort 1.2, OTG  
NFC No   Yes  
GPS Yes + A-GPS support, & GLONASS, BDS, GALILEO   Yes + A-GPS support & GLONASS, BDS, GALILEO, QZSS  
Main Camera Dual Camera: 50 MP, f/1.8, (wide), PDAF + 2ndry unspecified camera, LED Flash   HDR, panorama, Video (1080p@30fps)   Quad Camera: 200 MP, f/1.7, 24mm (wide), 1/1.3", multi-directional PDAF, OIS + 10 MP, f/2.4, 67mm (telephoto), 1/3.52", PDAF, OIS, 3x optical zoom + 50 MP, f/3.4, 111mm (periscope telephoto), 1/2.52", PDAF, OIS, 5x optical zoom + 50 MP, f/1.9, (ultrawide), dual pixel PDAF, Super Steady video, LED Flash   Laser AF, Best Face, auto-HDR, panorama, Video (8K@24/30fps, 4K@30/60/120fps, 1080p@30/60/240fps, 10-bit HDR, HDR10+, stereo sound rec., gyro-EIS)  
Front Camera 8 MP, f/2.0, (wide), Video (1080p@30fps)   12 MP, f/2.2, 26mm (wide), 1/3.2", dual pixel PDAF, HDR, HDR10+, Video (4K@30/60fps, 1080p@30fps)  
OS Android 14 OS   Android 15 OS, up to 7 major Android upgrades  
Chipset Mediatek Helio G92 Max   Qualcomm SM8750-AB Snapdragon 8 Elite (3 nm)  
Processor 2.0 Ghz Octa Core   Octa-core (2 x 4.47 GHz Oryon V2 Phoenix L + 6 x 3.53 GHz Oryon V2 Phoenix M)  
GPU Mali-G52 MC2   Adreno 830  
Sensors Accelerometer, Compass, Fingerprint (side-mounted), Gyro, Proximity   Accelerometer, Barometer, Compass, Fingerprint (under display, ultrasonic), Gyro, Proximity, Samsung DeX, Samsung Wireless DeX (desktop experience support) Ultra Wideband (UWB) support Circle to Search  
Browser HTML5   HTML5  
Sound 3.5mm Audio Jack, Speaker Phone   32-bit/384kHz audio, Tuned by AKG, Speaker  Phone  
Colors Gold, Black   Titanium Silver Blue, Titanium Black, Titanium White Silver, Titanium Gray, Titanium Jade Green, Titanium Jet Black, Titanium Pink Gold  
Battery (Non removable), 6000 mAh   - Fast charging 45W wired, Reverse wired   Li-ion 5000 mAh   - Fast charging 45W wired, PD3.0, 65% in 30 min, 25W wireless (Qi2), 4.5W reverse wireless  
Misc SMS(threaded view), MMS, Email, Push Mail, IM   IP68/IP69 dust/water resistant (up to 1.5m for 30 min), Photo/video editor, Document viewer   SMS(threaded view), MMS, Email, Push Mail, IM   Glass front + Corning Gorilla Armor 2), glass back + Corning Gorilla Armor 2), titanium frame (grade 5), IP68 dust/water resistant (up to 1.5m for 30 min), Stylus