Device comparison
Galaxy S9 vs Galaxy S8 Plus
Galaxy S8 Plus vs Galaxy S9: repairability, common failures, parts availability, and which Galaxy S is cheaper to own and fix — from a Seattle repair shop.
Our pick: Galaxy S9
Galaxy S8 Plus vs Galaxy S9: repairability, common failures, parts availability, and which Galaxy S is cheaper to own and fix — from a Seattle repair shop.
| Spec | Galaxy S9 | Galaxy S8 Plus |
|---|---|---|
| Release year | 2018 | 2017 |
| Chip | Snapdragon 835 / Exynos 8895 | Snapdragon 835 / Exynos 8895 |
| Display | 5.8" Infinity Display AMOLED | 6.2–6.7" AMOLED (Plus/Edge) |
| Repairability (1–10) | 6 | 6 |
| Parts availability | fair | fair |
| Our rating | 3.5/5 | 3/5 |
| Top shop failure | Battery degradation | Battery degradation |
| Second common issue | USB-C / charging port wear | USB-C / charging port wear |
| Generation era | modern | modern |
Galaxy S8 Plus vs Galaxy S9: which is better to own and fix?
We compare Samsung Galaxy S phones the way a repair shop should — not just benchmarks and cameras, but what breaks, what fixes cost, and which chassis is less painful on our bench.
Quick take
Pick Galaxy S9 if better repairability and parts story in our shop. Both are Galaxy S phones, so you're still in Android flagship repair territory — but the gap matters when you crack a screen or need a battery.
Spec & repair snapshot
See the comparison table below for release year, chip, display, repairability scores, and the #1 failure we see on each model.
Galaxy S9 — shop notes
- Repairability: 6/10
- Parts: fair
- Common issues: Battery degradation; USB-C / charging port wear; Screen cracks from drops
- Full Galaxy S9 review · Repair pricing
Galaxy S8 Plus — shop notes
- Repairability: 6/10
- Parts: fair
- Common issues: Battery degradation; USB-C / charging port wear; Screen cracks from drops
- Full Galaxy S8 Plus review · Repair pricing
Generation gap
Galaxy S9 (2018) vs Galaxy S8 Plus (2017) — 1 year apart. These are close generations; buy on price, condition, and repair history.
Which should you buy used?
- Check battery health (Settings → Battery and device care) before either model.
- Ask about prior screen or back glass work — quality varies by shop.
- Compare our repair prices for the exact failure you're worried about.
If you're cross-shopping within the same generation (e.g. Ultra vs Plus vs FE), repair costs often differ more than performance for typical users.
Repair cost & downtime (shop perspective)
| Factor | Galaxy S9 | Galaxy S8 Plus | |--------|----------------|----------------| | Repairability | 6/10 | 6/10 | | Parts availability | fair | fair | | Typical first shop visit | Battery degradation | Battery degradation |
These are qualitative scores from our Seattle benches — not Samsung specs. Higher repairability usually means lower labor surprise when something common breaks.
Software & resale runway
Galaxy S9 (2018) will generally outlast Galaxy S8 Plus (2017) on One UI and security updates, but the used price gap often swallows that advantage. If both phones are already several years old, condition and repair history matter more than generation gap.
Who should pick which?
- Choose Galaxy S9 if you prioritize balanced Galaxy S features and accept similar or better repairability vs the alternative.
- Choose Galaxy S8 Plus if you prioritize large-screen flagship features and the used price fits your budget after a realistic repair cushion.
We link full single-device reviews above when you want depth on one model only.
Verdict
For most buyers walking into our Seattle shop, Galaxy S9 is the smarter pick between the Galaxy S9 and Galaxy S8 Plus — primarily because of better repairability and parts story in our shop. That doesn't mean the other phone is bad; it means total ownership cost tilts one way when you plan for real-world repairs.
