How to Know When to Upgrade Your Phone
This guide scores four factors: years owned, battery health, perceived performance, and active problems. Each factor adds to a 100-point upgrade readiness score. The higher the score, the more compelling the case for a new device.
Scoring Breakdown
| Factor | Condition | Points added |
|---|---|---|
| Years owned | 5+ years | 40 pts |
| Battery health | Under 60% | 30 pts |
| Performance | Very slow | 30 pts |
| Security updates ended | If applicable | 15 pts |
| Apps no longer supported | If applicable | 17 pts |
How to Check Battery Health
On iPhone, go to Settings > Battery > Battery Health & Charging. Apple flags capacity below 80% as degraded. On Android, the path varies: Samsung devices show health in Settings > Device Care > Battery; other brands may require a third-party app or USSD code (*#*#4636#*#*). Google Pixel devices display battery health in Settings > Battery > Battery health.
Battery Replacement vs Full Upgrade
If battery health is the only issue, replacing the battery is typically far cheaper than a new phone. Official Apple battery replacement runs $89–$99 (US), while Samsung charges $50–$70 depending on the model. If the phone is 3+ years old and performance is also degraded, weigh the battery service cost against a discounted new or refurbished device upgrade.
Frequently Asked Questions
Apple provides iOS updates for approximately 6–7 years. Google Pixel phones receive 7 years of OS and security updates (Pixel 8 and newer). Samsung flagship Galaxy phones receive 4 years of OS updates and 5 years of security patches. Mid-range phones typically receive 2–3 years of support.
Not necessarily. Some users are satisfied with 78% battery health if they can charge midday. The practical threshold is whether you can get through your typical day on one charge. If you can't, a battery replacement or upgrade is warranted.
Certified refurbished devices from Apple, Samsung, or reputable resellers are a cost-effective middle ground. They typically come with a 1-year warranty and cost 20–40% less than new. For an older phone that still scores well on this guide, refurbished is worth considering.