The world’s top-selling phone is a premium smartphone from a leading manufacturer, with over 200 million units sold globally in 2025. Your total cost of ownership depends far more on your cellular plan than on the device itself.
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The world’s best-selling smartphone is a premium model from a leading global manufacturer. According to industry sales data, this device has surpassed 200 million units cumulative, making it the most popular phone ever. But focusing only on the purchase price misses the bigger picture. Over a typical two-year ownership period, your cellular plan — including monthly service, taxes, and fees — can easily account for 60–70% of the total cost. That’s why savvy consumers evaluate plan pricing as carefully as the device itself.
Breaking Down Your Monthly Bill
The average postpaid cellular bill in the United States has risen steadily. Based on the latest Consumer Expenditure Survey data, households now pay approximately $135 per month for a single line (including taxes and fees). This figure has climbed about 3% annually due to inflation and added regulatory charges. Meanwhile, prepaid plans typically cost $30–$50 per month for comparable data allowances. The table below compares typical costs across plan types.
| Plan Type | Monthly Service | Taxes & Fees | Total Monthly | Annual Cost |
|---|---|---|---|---|
| Postpaid (major carrier) | $115 | $20 | $135 | $1,620 |
| Prepaid (budget provider) | $40 | $5 | $45 | $540 |
| Prepaid (value plan) | $30 | $4 | $34 | $408 |
Note that the premium smartphone itself retails for roughly $1,000–$1,200, but financing through a carrier can add interest charges if not paid off within promotional periods.
Prepaid vs. Postpaid: Which Saves You More?
The biggest differentiator in total cost is the choice between prepaid and postpaid plans. Prepaid options from budget providers require no credit check and no long-term contract. In exchange for lower monthly fees, you may get deprioritized data during network congestion. Postpaid plans from major carriers offer premium data speeds, device financing, and perks like streaming subscriptions, but at a premium price. Over a two-year period with the top-selling phone:
- Postpaid: $1,000 phone + $135/month × 24 = $4,240 total.
- Prepaid (budget provider): $1,000 phone + $45/month × 24 = $2,080 total.
- Prepaid (value plan): Buy phone outright at $1,000 + $34/month × 24 = $1,816 total.
The savings from choosing prepaid can be as much as $2,160 over two years. However, be aware that some prepaid plans cap data speeds or limit hotspot usage.
Taxes, Fees, and Hidden Charges
Many consumers overlook the mandatory surcharges that inflate their monthly bill. According to the Tax Foundation’s 2025 report on wireless taxes, the average U.S. household pays 17.2% of their monthly service charge in federal, state, and local taxes plus regulatory fees. Common line items include:
- Federal Universal Service Fund (USF) fee
- State and local sales tax
- 911 emergency service fees
- Regulatory recovery charges
- Administrative fees (often listed as “other charges”)
On a $115 postpaid plan, these add-ons can total $17–$20 per month. Prepaid plans often absorb some fees into the advertised price, making them more transparent.
Calculating Total Cost of Ownership
To truly evaluate the top-selling phone’s affordability, add the device price, monthly service for your expected contract length, and all taxes/fees. For a typical two-year postpaid commitment with a major carrier, the total comes to approximately $3,540 (phone $1,000 + service $2,160 + taxes $380). With a prepaid plan from a budget provider, the same phone costs closer to $2,160 total. The bottom line: the top-selling phone itself is only one part of the equation. Choosing the right cellular plan — one that aligns with your data usage, budget, and coverage needs — is the single most impactful decision you can make.