Short answer: Divide the price by the years you will actually keep the phone. Done that way, a renewed flagship usually costs less per year than a new budget phone — because it lasts longer, holds value better and does not need replacing as soon. The sticker price is the worst possible way to judge value.
The calculation
Cost per year = purchase price ÷ years of use. Two additions make it accurate:
- Add anything you will spend keeping it alive — a battery replacement is the usual one
- Subtract what you can sell it for at the end
That second line is where cheap phones quietly lose. A budget Android at three years old is worth very little. A former iPhone flagship at three years old still commands a real price.
Worked examples, using live prices
| Option | Price | Realistic years | Cost per year |
|---|---|---|---|
| New budget Android | ~₹15,000 | 2 | ~₹7,500 |
| Renewed iPhone 11 | ~₹15,499 | 2–3 | ~₹5,200–7,750 |
| New mid-range Android | ~₹25,000 | 3 | ~₹8,300 |
| Renewed iPhone 14 Pro Max (Saver) | ~₹23,999 | 3 | ~₹8,000 |
| Renewed iPhone 13 | ~₹33,999 | 4 | ~₹8,500 |
| New flagship | ~₹80,000 | 4 | ~₹20,000 |
Prices are indicative and change with stock.
Read the first two rows together. Roughly the same money buys either a new budget Android or a renewed iPhone 11 — but the iPhone is supported by iOS 27 and has a resale value at the end. The budget Android likely has one OS update left and will be worth very little in 2028.
Now read the last row. A new flagship at ₹80,000 costs roughly two and a half times per year what a renewed former flagship does, for a phone that does substantially the same things.
Why cheap phones cost more per year
Three compounding reasons.
Shorter software life. Budget Android typically gets two to three OS updates. When apps outgrow it, replacement is forced rather than chosen. See Android's seven-year promise for who is exempt from this.
Faster physical decline. Lower-grade batteries, plastic frames, weaker ingress protection. The phone feels tired sooner, and feeling tired is what actually triggers replacement.
Almost no residual value. This is the biggest hidden cost. A three-year-old budget phone is nearly worthless; a three-year-old iPhone still sells. Factor resale in and the gap widens considerably.
The variable that breaks the whole calculation
Battery. Everything above assumes the phone survives the years you have assigned it, and a failed battery is the single most common reason a phone gets replaced early.
If you buy a used phone at 82% battery health and it needs replacing in year two, you have not bought three years for ₹24,000. You have bought roughly eighteen months, plus a repair bill, and your real cost per year is far higher than the table suggests.
This is the practical reason we replace the battery on every device rather than testing it and passing it on. A Premium Renewed device ships at 100% battery health, through over 300 quality checks, under an 18-month warranty on iPhones. Those are not features so much as the conditions that make the maths above hold.
How to verify it yourself: checking iPhone battery health.
Where a new phone genuinely wins on this measure
If you keep phones five years or more, a new device with a full software runway can beat a renewed one on cost per year. The renewed phone hits its software wall first, and the calculation flips.
So the honest rule is: replace every two to three years, buy renewed. Keep for five, consider buying new. Most people are in the first group, but not everyone is, and it is worth knowing which you are before deciding.
Do this before you buy
Ask two questions. How long did you keep your last phone — not how long you meant to, how long you actually did. And what would this phone be worth when you replace it?
Those two numbers turn a price tag into a real cost. They are also why the more expensive-looking option is frequently the cheaper one.
Related: a new ₹25,000 phone vs a renewed ₹25,000 flagship · should you buy now or wait? · Browse Premium Renewed iPhones
Frequently asked questions
What is cost per year of phone ownership?
The purchase price divided by the number of years you keep the device, plus any repair costs and minus its resale value at the end. It reflects real cost far better than the sticker price.
Is a renewed flagship cheaper than a new budget phone over time?
Usually yes. A renewed flagship typically has longer software support, better build quality and meaningful resale value, so it lasts longer and returns more at the end, lowering cost per year.
How long do people actually keep phones?
Replacement cycles have lengthened considerably, with many people now keeping phones three to four years rather than two. Use your own past behaviour rather than an average when calculating.
Does battery health affect cost per year?
Significantly. A degraded battery is the most common reason a phone is replaced early. A device bought at 82% battery health may need replacing a year sooner, which raises its real cost per year sharply.
When is buying new better value?
If you keep phones five years or longer. Over that horizon a new device's fuller software runway can outweigh the higher purchase price.
