The price in the window decides the purchase. It says almost nothing about what the phone will actually cost. Between protection, a fading battery, a cracked screen and resale value, the gap between two devices can widen by tens of thousands of dinars.
The calculation is not theoretical. Three years, one simple sum and assumptions written down are enough.
What the sticker price forgets
A new phone almost always demands immediate spending. A case, a screen protector, sometimes a memory card. Some models ship without a charger, which adds the cost of a compatible adapter.
Data plans sit on top, though they exist whatever the phone and therefore do not separate models. Consumption does: a large screen and a powerful chip drain the battery faster, which means charging more often.
The battery comes first
A lithium battery loses capacity from the first few hundred cycles. After eighteen to twenty-four months, runtime drops noticeably on most devices.
Replacing it costs less than a screen, but it is not free. On a budget model the bill can represent a significant share of the phone's value. On a flagship it stays marginal.
A device with an easily replaced battery ages better. A sealed model with abundant glue discourages repair and pushes buyers toward full replacement.
The screen is the heaviest repair
One fall is enough. Replacing an OLED panel usually costs more than an LCD, and more on a recent model.
On a 45,000 DA phone, a screen repair can approach half the purchase price. At that point many owners prefer to change devices. The low initial price turns into a rapid repurchase.
On a 110,000 DA model the same repair still hurts, but it preserves a device that is still worth a lot.
Depreciation
A phone loses value the moment it leaves the shop. High-end models lose more in dinars, even when their percentage loss is sometimes gentler.
iPhones generally resell better than Android phones across every tier. A flagship Android depreciates faster, especially when software support is short.
Support duration therefore enters the calculation directly. A device updated for seven years resells better at three years than one abandoned after two.
A worked example
Take two devices with explicit assumptions. The amounts illustrate the method, they do not predict a price.
Phone A, 45,000 DA. Case and protector, 3,000 DA. Battery replaced at 24 months, 5,000 DA. Resale at three years, 12,000 DA. Total: 45,000 + 3,000 + 5,000 − 12,000 = 41,000 DA, roughly 1,140 DA per month.
Phone B, 110,000 DA. Case and protector, 3,000 DA. No repair. Resale at three years, 45,000 DA. Total: 110,000 + 3,000 − 45,000 = 68,000 DA, roughly 1,890 DA per month.
The monthly gap looks modest. Add one factor though: if phone A fails at month 30 and is not repaired, the owner buys again and the calculation changes entirely.
The formula to keep
Monthly cost = (purchase price + accessories + repairs − resale price) divided by months of use.
Three numbers are enough to compare two offers: the price paid, the expected expenses, and the estimated resale value. The rest is personal comfort.
Three profiles
Tight budget: a 40,000 or 50,000 DA model, protected from day one, sold after two years. The loss stays contained if the device is treated well.
Heavy use: an 80,000 or 120,000 DA model with good battery life and long support. The initial outlay is higher, and so is the service life.
Enthusiast: the high end makes sense if the device is kept three or four years. Replaced every year, it becomes the most expensive option on the market.
Repair or replace
The simple rule: if the repair costs more than half the estimated resale value, replacement becomes rational. Below that, repairing preserves the capital.
Age matters too. A four-year-old device whose battery and screen fail together has little left to save.
The short version
The sticker price is one expense line, not the final cost. Protection, battery, screen and resale weigh heavily on the real budget.
Before comparing two phones, estimate those four items. The difference between an apparent bargain and a sensible purchase usually sits there.
