Phone Upgrade Calculator
Compare upgrading to a new phone, keeping your current one, or buying refurbished. See the real multi-year cost of each.
Enter Your Values
Using shared profile · 3,500/mo · EUR — edit on Dashboard
Results update automatically as you change values.
What-If Scenarios
Results update instantlyCost Breakdown
Net Cost Comparison
Click chart to expand
Cumulative Upgrade Cost
Click chart to expand
Side-by-Side Comparison
Bars show relative size · ✓ marks the better option- Upfront Cost
- €810
- 3-Year Plan Diff
- €0
- Repair Costs
- €0
- Resale Value
- €300
- 3-Year Net Cost
- €510
- Monthly Cost
- €14
- Upfront Cost
- €0
- 3-Year Plan Diff
- €0
- Repair Costs
- €180
- Resale Value
- €80
- 3-Year Net Cost
- €180
- Monthly Cost
- €5.00
- Upfront Cost
- €650
- 3-Year Plan Diff
- €0
- Repair Costs
- €65
- Resale Value
- €260
- 3-Year Net Cost
- €450
- Monthly Cost
- €13
| Factor | Upgrade (New) | Recommended Keep Current | Buy Refurbished |
|---|---|---|---|
| Upfront Cost | €810 | €0 | €650 |
| 3-Year Plan Diff | €0 | €0 | €0 |
| Repair Costs | €0 | €180 | €65 |
| Resale Value | €300 | €80 | €260 |
| 3-Year Net Cost | €510 | €180 | €450 |
| Monthly Cost | €14 | €5.00 | €13 |
Over 3 years, upgrading costs €510 net. Keeping costs €180. Keep Current Phone is the best financial choice.
Scenario Analysis
How the outcome shifts if your assumptions turn out better or worse than expected.
Replace battery, keep phone
At stated values
Top model + plan increase
Compare Scenarios
Pin up to 3 and see them side by sideSet your inputs, then Pin current to save this scenario. Pin a few variations to compare their scores and outcomes here.
What Moves the Needle Most
How much each factor changes your 3-Year Upgrade Cost across its full range. New Phone Price has the biggest impact.
Focus your attention on New Phone Price — getting it right matters most. Factors lower down move the result less, so rough estimates there are fine.
Confidence & Assumptions
The result swings widely between best and worst cases — it depends heavily on assumptions that are hard to predict.
Total Cost: €714 (worst) → €510 (expected) → €180 (best)
These are the estimates the result depends on. Adjust them (and the Advanced inputs) to match your real situation — the closer they are to reality, the more reliable your decision.
These estimates are for informational purposes only and do not constitute financial advice. Actual results may vary based on factors not captured in this calculator.
How This Calculator Works
What this calculator does
This calculator compares three options — upgrading to a new phone, keeping your current one, or buying refurbished — over your chosen ownership period, including trade-in, resale, plan changes and repairs.
How the calculation works
We calculate the net cost of upgrading (price + accessories − trade-in − future resale + any plan increase) and compare it against the cost of keeping your phone (repairs and lost resale) and a refurbished alternative, then show the cost per month for each.
Formula
Upgrade Net = (Price + Accessories − Trade-in) + Plan Diff × Months − Resale Keep Cost = Repairs × Years Refurbished ≈ 65% of new price, discounted resale
Example
A €1,000 phone with €250 trade-in and €60 accessories is €810 net, less €300 resale over 3 years = €510, plus any plan increase. Keeping your phone at €60/year repairs = €180. Keeping usually wins unless your phone can no longer keep up.
How to Use This Calculator
- 1Enter your numbers
Fill in the inputs for Phone Upgrade Calculator. Defaults are realistic starting points — replace them with your actual figures.
- 2Understand the calculation
We calculate the net cost of upgrading (price + accessories − trade-in − future resale + any plan increase) and compare it against the cost of keeping your phone (repairs and lost resale) and a refurbished alternative, then show the cost per month for each.
- 3Review results and scenarios
Check metrics, cost breakdown, comparison tables, and best / expected / worst scenarios. Use sliders to stress-test assumptions.
- 4Decide with the verdict
Read the decision engine recommendation and FAQ. Example: A €1,000 phone with €250 trade-in and €60 accessories is €810 net, less €300 resale over 3 years = €510, plus any plan increase. Keeping your phone at €60/year repairs = €180. Keeping usually wins unless your phone can no longer keep up.
Factors to Consider
- Plan increases bundled with "free" upgrades are a hidden cost
- Phones depreciate 40-60% in the first year
- A battery replacement can add 1-2 years of life cheaply
- Refurbished phones offer most of the value at a lower price
- Manufacturing a new phone has a large carbon footprint
Common Mistakes
- Accepting a plan increase to get a "free" phone
- Ignoring the trade-in and resale value
- Upgrading yearly out of habit rather than need
- Forgetting accessories and insurance costs
- Not considering a refurbished model
Frequently Asked Questions
How often should I upgrade my phone?+
Financially, every 4-5 years is usually optimal. Modern phones stay capable for years, and a battery replacement is far cheaper than a new device.
Is buying refurbished worth it?+
Often yes. Certified refurbished phones cost 30-50% less than new, come with a warranty, and are far greener. They are frequently the best value option.
Are carrier upgrade deals a good idea?+
Be careful — many bundle the phone cost into a higher monthly plan. Over the contract you can pay more than buying the phone outright. Always compare the total cost.
This calculator provides estimates for informational purposes only and does not constitute financial, investment, tax, or legal advice. Always consult a qualified professional before making important financial decisions.
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