Galaxy S20 vs Galaxy S9 Plus: which is better to own and fix?

We compare Galaxy S phones the way a repair shop should — not just cameras and benchmarks, but what breaks, what fixes cost, how available parts are, and which chassis is less painful when real life happens.

Quick take

Pick Galaxy S20 if you care about stronger parts availability (good). You're still in Android flagship repair territory, but the ownership gap shows up the first time you crack a screen or need a battery.

If you're choosing purely on sticker price, open the repair pricing links below for each model before you commit — a “cheap” used phone with a bad parts story is an expensive hobby.

Spec & repair snapshot

Use the comparison table for release year, chip, display, repairability, parts, and the failures we see most. The sections below explain why those numbers matter for this specific pair.

Ownership economics

Repairability is a tie at 6/10. Labor surprise will feel similar on both; pick on parts availability, used price, and which failures each model actually sees.

Galaxy S20 has good parts availability vs fair for Galaxy S9 Plus. When a part is scarce, downtime stretches and shops quote more cautiously — that alone can decide a used purchase.

Our editorial ratings sit at 3.5/5 (Galaxy S20) and 3.5/5 (Galaxy S9 Plus). Those scores blend repair reality with day-to-day ownership — not launch-day hype.

Galaxy S20 — shop notes

• Repairability: 6/10
• Parts: good
• Our rating: 3.5/5
• Era / tier: modern · standard
• Common issues: Battery degradation; USB-C / charging port wear; Screen cracks from drops
• Bench notes:
  • Samsung screens and batteries are widely stocked — one of the easier Android lines to service.
  • In-display fingerprint calibration matters after screen replacement — budget shop time.
  • Genuine vs aftermarket parts affect always-on display, biometrics, and battery reporting.
• Full Galaxy S20 review · Repair pricing

Galaxy S9 Plus — shop notes

• Repairability: 6/10
• Parts: fair
• Our rating: 3.5/5
• Era / tier: modern · plus
• Common issues: Battery degradation; USB-C / charging port wear; Screen cracks from drops
• Bench notes:
  • Samsung screens and batteries are widely stocked — one of the easier Android lines to service.
• Full Galaxy S9 Plus review · Repair pricing

Generation gap

Galaxy S20 (2020) sits two years ahead of Galaxy S9 Plus (2018). That's usually enough for a noticeable performance and software-support edge, while used pricing still overlaps enough that repair economics decide the winner.

Chip, display, and daily feel

Galaxy S20 runs Snapdragon 865 / Exynos 990 while Galaxy S9 Plus runs Snapdragon 835 / Exynos 8895. For most owners that matters less than battery health and screen condition after two years. Displays differ: 6.1–6.4" AMOLED vs 6.2–6.7" AMOLED (Plus/Edge). Bigger/brighter panels look better — and cost more when they crack.

What actually breaks

Both phones share familiar shop traffic: Battery degradation; USB-C / charging port wear; Screen cracks from drops. Budget for those before you buy either used unit. Galaxy S20 leans toward In-display fingerprint sensor failures after screen swap more often in our notes.

Which should you buy used?

1. Check battery health (Settings → Battery and device care) before either model
2. Ask about prior screen, back glass, or charging-port work — quality varies wildly by shop and part grade.
3. Price the #1 failure on each model using our repair pages before you negotiate.
4. Inspect for moisture indicators and bent frames — frame damage turns “simple” jobs into housing swaps.

These generations are close enough that condition and repair history usually beat raw year-of-release.

Repair cost & downtime (shop perspective)

| Factor | Galaxy S20 | Galaxy S9 Plus | |--------|----------------|----------------| | Repairability | 6/10 | 6/10 | | Parts availability | good | fair | | Typical first shop visit | Battery degradation | Battery degradation | | Second common issue | USB-C / charging port wear | USB-C / charging port wear | | Editorial rating | 3.5/5 | 3.5/5 |

Higher repairability and stronger parts availability usually mean fewer “we need to order that” delays and less labor surprise on common jobs.

Software & resale runway

Galaxy S20 (2020) will generally outlast Galaxy S9 Plus (2018) on One UI and security updates, but the used price gap often swallows that advantage. If both phones are already several years old, condition, battery health, and prior repair quality matter more than the generation gap on paper.

Who should pick which?

• Choose Galaxy S20 if you want balanced Galaxy S flagship, plus similar repair difficulty.
• Choose Galaxy S9 Plus if you specifically need large-screen Galaxy S with premium features and the used price leaves room for a repair cushion — even if overall ownership tilts the other way.

When to skip both

Skip this matchup entirely if either unit has an unknown repair history, a swollen battery, or a cracked OLED with no price adjustment — those problems erase any “winner” on a spreadsheet. Get a quote on the exact failure first.

We link full single-device reviews above when you want depth on one model only. For live pricing, use each model's repair page.