When a smartphone battery starts getting weaker, the rational first question should not be “Should I buy a new phone?” but “Can I simply replace the battery?”
This is especially true for iPhones. Apple provides official battery service and repair options, and Apple explains that final repair costs are confirmed after inspection. Apple also states that some AppleCare plans include battery replacement at no additional cost when battery capacity drops below 80%.
At the same time, new iPhones are expensive. On Apple Japan’s official store page, iPhone 16 and iPhone 17 models are shown from 129,800 yen, and iPhone 17 Pro from 179,800 yen.
So if the only real problem is poor battery life, it may be a problem that can be solved for thousands or tens of thousands of yen rather than over 100,000 yen.
So why do people still jump to buying a new phone?
The answer is not only a lack of information. It is a mix of psychology, convenience, and mental accounting.
1. They Treat Battery Aging as Phone Death
Many people do not think of a smartphone as a collection of parts.
They do not separate the battery, display, camera, storage, OS, and processor. They simply think, “My phone is getting old.”
So the logic becomes:
The battery drains quickly.
The phone feels old.
It must be near the end.
I should buy a new one.
But a battery is a consumable part.
If the heel of your shoe wears down, you do not rebuild your entire house. In the same way, if only the battery is degraded, battery replacement should be the first option.
The bias here is simple:
Battery degradation gets misread as total device death.
2. Repair Feels Annoying, While Buying New Feels Like a Clean Solution
To be fair, battery replacement does feel annoying.
You may need to book an appointment.
You may worry about backups.
You may not be able to use the phone during repair.
You may worry about your data.
You may not know the difference between official and third-party repair shops.
You may not know the final price until inspection.
Buying a new phone feels easier.
Choose a model.
Order it.
Transfer data.
Everything becomes new.
To the brain, buying new looks like a clean reset.
But that is exactly the trap.
A repair that might cost thousands or tens of thousands of yen becomes a purchase of more than 100,000 yen just because repair feels inconvenient.
That is a very expensive convenience fee.
3. Installment Payments Hide the Pain
A 100,000-yen phone feels expensive.
But when the same price becomes a monthly payment, the pain becomes weaker.
This is mental accounting.
Battery replacement is a direct cost you feel now.
A new iPhone paid in installments becomes a softened future cost.
The total amount is much larger, but psychologically it feels lighter.
Installments are not always bad. They can be rational for work tools or business assets.
But if the only reason is “my battery is getting weak,” installments may simply be hiding the pain of a large purchase.
4. “I Want a New iPhone” Becomes “I Have No Choice”
Sometimes the real reason is simple.
People want a new iPhone.
They want a better camera.
They want a cleaner screen.
They are bored of the old phone.
People around them are upgrading.
A new device feels good.
That desire itself is not wrong.
The problem is when the desire is disguised as necessity.
My battery is bad.
I use it every day.
It is a necessity.
Old phones are risky.
I will pay monthly anyway.
With these excuses, the purchase no longer feels like consumption. It feels like infrastructure maintenance.
But in reality, it may simply be comfort spending wearing the mask of necessity.
5. The Strange Pattern: “I Have No Savings” but Still Buy New Phones
This is where the contradiction becomes obvious.
Some people say they have no savings, but when their phone battery gets weak, they replace the whole device.
From their point of view, a phone is a necessity.
But from the outside, it looks different:
A problem that might be solved by replacing the battery has been converted into a 100,000-yen device purchase.
At that point, the issue may not be low income alone.
It may be that money does not remain because spending decisions are too loose.
Some people do not lose money only through obvious luxuries like travel, restaurants, or clothes. They lose money through large “necessity-looking” purchases.
Smartphones are especially dangerous because they are truly necessary.
That makes the spending filter weaker.
This is how a “wallet with a hole” is created.
6. It Is Not Always Ignorance. Sometimes Replacement Is Rational.
Of course, buying a new phone can be reasonable.
For example:
- OS support is ending
- Storage is full
- Performance is very slow
- The display is broken
- The camera is important for work or side business
- Trade-in makes the upgrade rational
- Repair costs are high and there are other issues
- Reliability is critical for work
In those cases, upgrading may make sense.
The problem is when the cause is only the battery, but the response is a full device replacement.
That means the size of the solution does not match the size of the problem.
7. What to Check Before Buying a New Phone
Before replacing the entire phone, check these things.
1. Battery health
If battery capacity has fallen significantly, battery replacement may be enough.
2. Storage
If storage is always full, deleting files or moving photos to the cloud may help.
3. Why the phone feels slow
Is it actually the processor?
Is it storage?
Is it too many apps?
Is it the OS?
Do not jump to “old phone” without separating the causes.
4. Repair cost versus replacement cost
Compare official repair, authorized providers, third-party repair, used phones, new phones, and trade-in value.
Even a quick comparison can change the decision.
5. Do you simply want a new phone?
This matters.
Wanting a new phone is fine.
But if it is desire, treat it as desire. Do not disguise it as an unavoidable expense.
8. The Reset Purchase Bias
A useful label for this behavior is:
Reset purchase bias.
It means trying to solve a small frustration by buying a brand-new product instead of repairing, adjusting, or organizing the existing one.
A new phone feels great.
New battery.
Clean screen.
Better camera.
Faster performance.
Fresh ownership feeling.
But people should be aware that this feeling may cost more than 100,000 yen.
Especially if someone says they have no savings, they should not only look at income. They should also check whether their wallet has holes like this.
Conclusion: If It Is Only the Battery, Pause Before Buying a New Phone
Smartphones are essential tools.
Comfort matters.
But if the only problem is battery life, buying a whole new phone may be an oversized solution.
If battery replacement is enough, consider it first.
If storage is the issue, clean it up.
If the hardware is truly outdated, then consider replacing the device.
If someone says they have no savings while replacing an entire phone just because the battery is weak, the issue may not be that they cannot save money.
It may be that they keep making decisions that prevent money from staying.
The wallet does not have a tiny hole.
It has a hole large enough for a brand-new iPhone to fall through.
References (3)
- Apple Support Japan: iPhone battery service and repair
https://support.apple.com/ja-jp/iphone/repair/battery-replacement - Apple Japan: iPhone 16 purchase page
https://www.apple.com/jp/shop/buy-iphone/iphone-16 - iCracked Japan: iPhone battery replacement service price examples
https://www.icracked.jp/service/iphone/batteryrepair/
