PersonalDevicesEvolutionRev A — 2026.05

Device Evolution // 2018 → 2025

Side-by-side datasheet · iPhone XR (Q4 2018) to Samsung Galaxy S25 FE (Q4 2025). Seven model-years of personal hardware. Display, silicon, memory, optics, power, radios, ecosystem. No editorial, no score.

DocumentDEV-EVO-001
RevisionA · 2026-05-17
Span7 years · 2 OS
Sheet1 of 1
§ 00

Transformation · re-plot

plotting · 11.5 s cycle · click to replay
Plot of iPhone XR followed by Galaxy S25 FE in the same blueprint frame

PLOTTING UNIT A · iPhone XR · 2018 PLOTTING UNIT B · Galaxy S25 FE · 2025

§ 01

Elevations — front & rear, dimensional

drawing · mm
UNIT A · 2018

iPhone XR · front

iPhone XR front elevation, 150.9 × 75.7 mm Front orthographic elevation of iPhone XR. Body 150.9 by 75.7 mm with 14 mm corner radius. Display: 6.1 inch LCD with top-center trapezoidal notch pendant housing front camera, IR speaker slit, and TrueDepth dot. Bottom edge: Lightning port flanked by speaker and microphone grilles. Left edge: silent slider above volume up and volume down. Right edge: sleep/wake button. 75.7 mm 150.9 mm A · NOTCH · TRUEDEPTH B · MUTE / RING C · LCD · 6.1" D · LIGHTNING · SPK / MIC
H × W × D150.9 · 75.7 · 8.3
Mass194 g
IngressIP67
UNIT B · 2025

Galaxy S25 FE · front

Galaxy S25 FE front elevation, 161.3 × 76.6 mm Front orthographic elevation of Samsung Galaxy S25 FE. Body 161.3 by 76.6 mm with 10 mm corner radius and flatter rails than XR. Display: 6.7 inch AMOLED with top-center punch-hole front camera and ultrasonic in-display fingerprint sensor in lower third. Bottom edge: USB-C port flanked by speaker and microphone grilles. Right edge: volume rocker above power button. Left edge: no controls. 76.6 mm 161.3 mm FP A · PUNCH-HOLE · 12 MP B · ULTRASONIC FP C · AMOLED · 6.7" D · USB-C · SPK / MIC
H × W × D161.3 · 76.6 · 7.4
Mass~210 g
IngressIP68
UNIT A · 2018 · REAR

iPhone XR · rear

iPhone XR rear elevation, single-lens camera island Rear orthographic elevation of iPhone XR. Same 150.9 by 75.7 mm body. Single rounded-square camera island in upper-left containing one 12 megapixel wide lens with f/1.8 aperture and OIS, a quad-LED True Tone flash, and a microphone hole. Apple logo centered mid-body. iPhone wordmark in lower third. Side controls mirrored from front elevation. 75.7 mm 150.9 mm iPhone A · 12 MP WIDE f/1.8 · SINGLE LENS B · QUAD-LED TRUE TONE C · ISLAND · 22 × 22 mm ≈ 22 mm
Lenses1 · wide
Main12 MP f/1.8 OIS
Video4K · 60 fps
UNIT B · 2025 · REAR

Galaxy S25 FE · rear

Galaxy S25 FE rear elevation, three vertically-stacked discrete camera rings Rear orthographic elevation of Samsung Galaxy S25 FE. Same 161.3 by 76.6 mm body. Three discrete camera rings stacked vertically along the upper-left, no shared camera island. Top ring: 8 megapixel 3x telephoto with OIS. Middle ring (largest): 50 megapixel wide f/1.8 with OIS. Bottom ring: 12 megapixel ultrawide. LED flash and microphone to the right of the middle ring. SAMSUNG wordmark centered in lower third. 76.6 mm 161.3 mm SAMSUNG A · 8 MP 3× TELE OIS B · 50 MP WIDE f/1.8 OIS C · 12 MP ULTRAWIDE D · 3 DISCRETE RINGS · NO ISLAND ≈ 40 mm
Lenses3 · UW + W + 3×T
Main50 MP f/1.8 OIS
Video8K · 30 fps
§ 02

Comparison matrix — subsystem by subsystem

specsheet · Δ delta
Subsystem iPhone XR · 2018 Galaxy S25 FE · 2025 Δ Delta
Display 6.1" LCD · 1792×828 · 326 ppi · 60 Hz 6.7" AMOLED 2X · 2340×1080 · 120 Hz adaptive · HDR10+ +0.6" · 2× refresh · LCD → AMOLED
Pixel density 326 ppi ~385 ppi +59 ppi · +18 %
SoC Apple A12 Bionic · 7 nm · 6C CPU / 4C GPU Exynos 2400e · 4 nm · 10C CPU / Xclipse GPU 7 nm → 4 nm · +4 CPU cores
Memory 3 GB 8 GB LPDDR5X +5 GB · 2.67×
Storage 64 / 128 / 256 GB 128 / 256 / 512 GB · UFS 4.0 2× max · UFS 4.0
Rear camera 12 MP wide f/1.8 OIS · single lens 50 MP wide f/1.8 OIS · 12 MP UW f/2.2 · 8 MP 3× tele OIS 1 → 3 lenses · +38 MP main
Front camera 7 MP f/2.2 · TrueDepth 12 MP f/2.2 · punch-hole +5 MP · notch → cutout
Video 4K @ 60 fps 8K @ 30 fps · 4K @ 60 fps + 8K capture
Battery 2942 mAh 4900 mAh +1958 mAh · +66 %
Charging Lightning · 18 W wired · 7.5 W Qi USB-C · 45 W wired · 15 W Qi · reverse wireless 2.5× wired · 2× wireless
Connectivity 4G LTE · Wi-Fi 5 · BT 5.0 5G sub-6 · Wi-Fi 6E · BT 5.3 · NFC · UWB 4G → 5G · + UWB
Authentication Face ID · structured IR Ultrasonic in-display FP · 2D face IR depth → ultrasonic
Operating system iOS 12 → iOS 18 · ~6 yrs support One UI 7 / Android 15 · 7-yr OS commitment platform shift · iOS → Android
Ingress IP67 · 1 m · 30 min IP68 · 1.5 m · 30 min IP67 → IP68
Weight 194 g ~210 g +16 g · +8 %

Note · figures sourced from manufacturer datasheets and verified spec pages. Δ column is informational, not a benchmark.

§ 03

Capability deltas — quantitative

bars · relative scale
Memory · RAM× 2.67
3 GB XR
8 GB S25 FE
Battery · capacity+ 1958 mAh
2942 XR
4900 S25 FE
Display · refresh× 2
60 Hz XR
120 Hz S25 FE
Charging · wired× 2.5
18 W XR
45 W S25 FE
Rear cameras · count× 3
1 XR
3 S25 FE
Cellular · generation4G → 5G
4G XR
5G S25 FE
Process node · SoC7 → 4 nm
7 nm XR
4 nm S25 FE
Main sensor · resolution× 4.17
12 MP XR
50 MP S25 FE
§ 04

System shift — ecosystem & subsystem migration

block diagram
Architecture diagram showing migration from iOS / Apple ecosystem to Android / Samsung ecosystem ARCH · ECOSYSTEM MIGRATION · 2018 → 2025 UNIT A · 2018 · CLOSED PLATFORM UNIT B · 2025 · OPEN ANDROID OS · iOS 12 → 18 CLOSED · ~6 YR SUPPORT SoC · APPLE A12 7 nm · 6C CPU MEM · 3 GB LPDDR4X AUTH · FACE ID STRUCTURED IR I/O · LIGHTNING USB 2.0 · PROPRIETARY RADIO · 4G LTE Wi-Fi 5 · BT 5.0 DIST · APP STORE SANDBOXED · SINGLE SOURCE OS · ONE UI 7 / ANDROID 15 7-YR OS COMMITMENT SoC · EXYNOS 2400e 4 nm · 10C CPU · XCLIPSE GPU MEM · 8 GB LPDDR5X AUTH · FP + FACE ULTRASONIC IN-DISPLAY I/O · USB-C USB 3.2 · DISPLAYPORT ALT RADIO · 5G SUB-6 Wi-Fi 6E · BT 5.3 · UWB · NFC DIST · PLAY + SIDELOAD OPEN · F-DROID · APK · ADB MIGRATION CHANNEL · DELTA OS iOS ⟶ ANDROID SoC APPLE SILICON ⟶ EXYNOS MEM 3 GB ⟶ 8 GB · +5 GB AUTH FACE ID ⟶ FP + FACE I/O LIGHTNING ⟶ USB-C RF 4G LTE ⟶ 5G + UWB DIST CLOSED PLATFORM ⟶ OPEN
subsystem block migration delta logical link · dashed
§ 05

Timeline — 2018 to 2025

lifespan · beats
Device timeline spanning 2018 to 2025 2018 2019 2020 2021 2022 2023 2024 2025 DEVICE LIFESPAN BAND CONTEXTUAL BEATS iPhone XR · primary device Galaxy S25 FE · primary XR · LAUNCH Q4 2018 iOS 16 iOS 18 · XR FINAL S25 FE · LAUNCH Q4 2025 5G ROLLOUT BEGINS USB-C MANDATE (EU) ON-DEVICE LLMs