Smartphone protection plans feel inexpensive month to month, but they add up quickly—and you may never file a claim. On the other hand, a single cracked screen can be a large one-time expense. This calculator compares the expected annual cost of two strategies:
The goal isn’t to predict the future perfectly—it’s to give you a clear, apples-to-apples way to evaluate when insurance is likely to be worth it for your risk level.
This calculator uses expected value: probability multiplied by cost impact. Let:
If you’re uninsured, you only pay when a break happens:
With insurance, you pay premiums regardless of claims, plus the deductible if a break happens:
Ei = 12 × P + p × D
The break-even probability is the risk level where both strategies cost the same on average. Set Ew = Ei and solve for p:
pbreak-even = (12 × P) / (R − D)
If your estimated annual break probability is higher than this break-even value, insurance tends to win on expected cost. If it’s lower, paying out of pocket tends to be cheaper on average.
Expected cost is a useful decision tool, but it doesn’t capture everything. Many people still choose insurance to reduce worst-case pain (paying a predictable monthly fee instead of risking a large surprise bill). Others prefer self-insuring (saving the premiums and keeping an emergency fund).
Suppose:
Out of pocket: Ew = 0.20 × 300 = $60/year
Insurance: Ei = 144 + (0.20 × 99) = 144 + 19.80 = $163.80/year
In this example, paying out of pocket has a much lower expected annual cost.
Break-even probability:
p = (12 × 12) / (300 − 99) = 144 / 201 ≈ 0.716 → 71.6%
That means you’d need roughly a 72% chance of at least one screen break per year (given these prices) for insurance to break even on expected cost.
| Scenario | Out of pocket (Ew = p×R) | Insurance (Ei = 12×P + p×D) | Which tends to be cheaper? |
|---|---|---|---|
| Low break risk (small p) | Low (near $0) | Mostly premiums | Out of pocket |
| Moderate break risk | Moderate | Premiums + some expected deductible | Depends on R, P, D |
| High break risk (large p) | High (approaches R) | Premiums + deductible (approaches 12×P + D) | Insurance more likely |
| Deductible close to repair cost (D ≈ R) | p×R | 12×P + p×D (≈ 12×P + p×R) | Often out of pocket unless premiums are tiny |
Use your best estimate based on your habits and past experience. If you’ve broken 1 screen in the last 3 years, a rough starting point might be ~33% per year, then adjust for changes like using a better case, having kids use the phone, or doing more outdoor activity.
If D ≥ R, insurance usually won’t help for screen repairs because you’d pay as much (or more) than the repair cost when you file a claim—while still paying premiums. In that case the break-even formula isn’t meaningful because R − D is zero or negative.
No. This calculator is focused on screen repair economics. If you want to evaluate replacement (loss/theft), you’d need to model replacement probability and the replacement claim fee separately.
Many plans do, but often with a limit (for example, a maximum number of claims in 12 months). This calculator assumes at most one screen-break event per year; if you expect multiple claims, consider increasing the probability or using an average number of incidents model.