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Samsung  Galaxy S25 Ultra vs Xiaomi Redmi A5

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 / 1700(AWS) / 1900 / 2100   HSDPA 850 / 900 / 2100  
4G Network 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)   LTE band 1(2100), 3(1800), 5(850), 7(2600), 8(900), 38(2600), 39(1900), 40(2300), 41(2500)  
5G Network SA/NSA/Sub6  
Dimensions 162.8 x 77.6 x 8.2 mm   171.7 x 77.8 x 8.3 mm  
Sim Type Nano-SIM + Nano-SIM + eSIM + eSIM (max 2 at a time)   Nano-SIM + Nano-SIM  
Weight 219 g   193 g  
Display Type Dynamic LTPO AMOLED 2X Capacitive Touchscreen   120Hz, HDR10+, 2600 nits (peak), Always-on display   IPS LCD Capacitive Touchscreen   120Hz, 450 nits (typ)  
Display Size 6.9 Inches   1440 x 3120 Pixels (~498 PPI)   6.88 Inches   720 x 1640 Pixels (~260 PPI)  
Protection Corning Gorilla Armor 2  
Memory 512GB Built-in, 12GB RAM, UFS 4.0   64GB Built-in, 4GB RAM, eMMC 5.1  
Card slot No   microSDXC (dedicated slot)  
WLAN Wi-Fi 802.11 a/b/g/n/ac/6e/7, tri-band, Wi-Fi Direct   Wi-Fi 802.11 a/b/g/n/ac, dual-band  
BlueTooth v5.4 with A2DP, LE   v5.2 with A2DP, LE  
USB USB Type-C 3.2, DisplayPort 1.2, OTG   USB Type-C 2.0  
NFC Yes   No  
GPS Yes + A-GPS support & GLONASS, BDS, GALILEO, QZSS   Yes + GPS  
Main Camera 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)   Dual Camera: 32 MP, f/1.8, (wide) + Auxiliary lens, LED Flash   HDR, Video (1080p@30fps)  
Front Camera 12 MP, f/2.2, 26mm (wide), 1/3.2", dual pixel PDAF, HDR, HDR10+, Video (4K@30/60fps, 1080p@30fps)   8 MP, f/2.0, (wide), Video (1080p@30fps)  
OS Android 15 OS, up to 7 major Android upgrades   Android 15 (Go edition), up to 2 major Android upgrades  
Chipset Qualcomm SM8750-AB Snapdragon 8 Elite (3 nm)   Unisoc T7250 (12 nm)  
Processor Octa-core (2 x 4.47 GHz Oryon V2 Phoenix L + 6 x 3.53 GHz Oryon V2 Phoenix M)   Octa-core (2x 1.8 GHz Cortex-A75 + 6 x 1.6 GHz Cortex-A55)  
GPU Adreno 830   Mali-G57 MP1  
Sensors Accelerometer, Barometer, Compass, Fingerprint (under display, ultrasonic), Gyro, Proximity,  Samsung DeX, Samsung Wireless DeX (desktop experience support) Ultra Wideband (UWB) support Circle to Search   Accelerometer, Compass, Fingerprint (side mounted), Virtual proximity sensing  
Browser HTML5   HTML5  
Sound 32-bit/384kHz audio, Tuned by AKG, Speaker Phone   3.5mm Audio Jack, 24-bit/192kHz audio, Speaker  Phone  Mobile phone accessories
Colors Titanium Silver Blue, Titanium Black, Titanium White Silver, Titanium Gray, Titanium Jade Green, Titanium Jet Black, Titanium Pink Gold   Ocean Blue, Lake Green, Sandy Gold, Midnight Black  
Battery Li-ion 5000 mAh   - Fast charging 45W wired, PD3.0, 65% in 30 min, 25W wireless (Qi2), 4.5W reverse wireless   (Non removable), 5200 mAh   - Battery charging 15W  
Misc 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   SMS(threaded view), MMS, Email, Push Mail, IM   Dust and splash resistant, Photo/video editor, Document viewer