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How to Compare Phone Prices, Trade-In Value, and Long-Term Costs

A phone’s advertised price is only part of its cost. Compare the device, required plan, credits, trade-in terms, taxes, and switching consequences over the period you expect to keep it.
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Compare the full cost of owning each phone over the same period—not just its advertised price or monthly device payment. Include the phone, any required plan, taxes and fees, credits you can actually qualify for, confirmed trade-in value, and what you would owe or forfeit if you leave early. This guide is U.S.-focused; carrier promotions, trade-in valuations, taxes, and fees can change.

Start with the same ownership period

Choose how long you realistically expect to keep the phone, then compare every option across that same span. A 24-month comparison is not like-for-like if one promotion requires 36 months of service to collect all its credits.

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For each option, record these amounts and terms:

  • Phone price due at purchase plus any installment payments during the comparison period.
  • Applicable sales tax and mandatory transaction fees. Some offers calculate tax on the phone’s full price even when the advertised device cost is discounted; check the terms for your purchase route and location.
  • The required service plan over the same period, including the extra cost of a premium plan or new line needed for a promotion.
  • Bill credits you qualify for, when they begin, how long they continue, and any service requirement attached to them.
  • The confirmed trade-in amount, based on the exact phone and condition—not a maximum advertised estimate.
  • Any remaining installment balance, lost credits, or other cost if you switch before payments or credits finish.

Keep service costs that are identical across choices separate when comparing the phones themselves. Include those costs in the household or contract total if plans differ. Do not subtract a trade-in value and a promotion twice if the offer treats them as the same benefit.

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Build a like-for-like cost comparison

Use a simple worksheet for each offer. Put the device and service terms beside the arithmetic so an apparently low total does not hide a commitment.

#1 Best Overall
Sale
Motorola Moto g - 2026 | Unlocked | Made for US 4/128GB | 50MP Camera | Pantone Slipstream, Cellular_Phone
  • Universal unlocked. Compatible with all major U.S. carriers, including Verizon, AT&T, T-Mobile and other prepaid carriers.
  • Super-bright, super-smooth 6.7" display. See your screen clearly even outdoors in sunlight, and enjoy seamless views with a fast-refreshing 120Hz display.*
  • AI-powered camera system. Take stunning photos in any light with the 50MP camera**, look your best with a 32MP selfie cam*****, and capture extreme close-ups.
  • Superfast 5G performance. Unleash your entertainment at 5G speed*** with the MediaTek Dimensity 6300 chipset and up to 12GB of RAM with RAM Boost****.
  • Long-lasting battery + TurboPower charging. Power through day after day with a 5200mAh battery, then get hours of power in just minutes.****
Cost or term What to record
Phone Amount due at purchase plus installments within your chosen ownership period.
Purchase taxes and fees Amounts applicable to your location and purchase route; confirm whether tax is based on full price.
Service Required plan and line costs for the same period, noting any plan upgrade required by the offer.
Credits Credits you qualify for, their monthly amount, start date, duration, and conditions.
Trade-in Final confirmed value for your exact model, storage, lock status, and condition.
Early exit Installment balance, credits that stop, and other stated switching or payoff consequences.

Calculate the total for the chosen period using the actual offer terms. If one deal requires a more expensive plan, account for that difference rather than calling the phone free based only on its device line. The FTC’s fee guidance concerns pricing transparency generally; it is not a phone-specific cost formula, and its scope and exceptions matter.

Read the phone promotion beyond its headline

A large advertised discount may require an eligible trade-in, a qualifying plan or new line, and bill credits spread across multiple months. The value to you depends on whether you meet the conditions and expect to keep the qualifying service long enough to receive the credits.

Rank #2
Sale
Samsung Galaxy A17 5G Smart Phone 128GB US 1 Yr Manufacturer Warranty Black | Large AMOLED, High-Res Camera, Durable Design, Super Fast Charging, Expandable Storage, Circle to Search, 2025
  • YOUR CONTENT, SUPER SMOOTH: The ultra-clear 6.7" FHD+ Super AMOLED display of Galaxy A17 5G helps bring your content to life, whether you're scrolling through recipes or video chatting with loved ones.¹
  • LIVE FAST. CHARGE FASTER: Focus more on the moment and less on your battery percentage with Galaxy A17 5G. Super Fast Charging powers up your battery so you can get back to life sooner.²
  • MEMORIES MADE PICTURE PERFECT: Capture every angle in stunning clarity, from wide family photos to close-ups of friends, with the triple-lens camera on Galaxy A17 5G.
  • NEED MORE STORAGE? WE HAVE YOU COVERED: With an improved 2TB of expandable storage, Galaxy A17 5G makes it easy to keep cherished photos, videos and important files readily accessible whenever you need them.³
  • BUILT TO LAST: With an improved IP54 rating, Galaxy A17 5G is even more durable than before.⁴ It’s built to resist splashes and dust and comes with a stronger yet slimmer Gorilla Glass Victus front and Glass Fiber Reinforced Polymer back.

The FCC’s 2024 Communications Marketplace Report documented July 2024 examples involving iPhone 15 and Galaxy S24 promotions. AT&T examples used credits over 36 months; Verizon examples included a new line or qualifying plan and credits over 36 months; T-Mobile examples used credits over 24 months with specified plan or line conditions. These are historical illustrations, not offers or prices established as available in October 2026.

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For a current offer, check the carrier’s terms for the eligible model and trade-in, required plan or line, credit schedule, purchase taxes, and what happens if you cancel, switch, or pay off the phone early. Compare the net cost only after applying the terms you can satisfy.

Rank #3
Sale
Samsung Galaxy A16 5G 128GB Cell Phone, Unlocked Android Smartphone, Large AMOLED Display, Durable Design, Super Fast Charging, Expandable Storage, US Version, 2025, Blue Black (Renewed)
  • Charger NOT Included, 6.7" Super AMOLED FHD+, 90Hz Refresh Rate, 385 ppi, 800 nits (HBM), 1080x2340px, 5000mAh Battery
  • 128GB, 4GB RAM, microSDXC, Exynos 1330 (5nm), Octa-Core, Mali-G68 MP2 or Mali-G57 MC2 GPU
  • Rear Camera: 50MP, f/1.8 (wide) + 5MP, f/2.2 (ultrawide) + 2MP, f/2.4 (macro), LED flash, panorama, HDR; Front Camera: 13MP, f/2.0, Android 14, up to 6 major Android upgrades, One UI 6.1
  • 3G: HSDPA 850/900/1700(AWS)/1900/2100; 4G LTE: 1/2/3/4/5/7/12/13/14/20/25/26/28/29/30/38/39/40/41/48/66/71, 5G: 2/5/25/41/66/71/77/78 SA/NSA/Sub6/mmWave - Nano-SIM + eSIM
  • US Model – Global Connectivity – Compatible with Most GSM Carriers like T-Mobile, AT&T, MetroPCS, etc. Will Also work with CDMA Carriers Such as Verizon, Straight Talk.

Estimate trade-in value conservatively

A trade-in quote is conditional, not a guaranteed universal value for the phone. Eligibility and valuation may depend on the exact model, carrier, timing, unlocked status, and the device’s condition when it is inspected.

Samsung’s trade-in FAQ says eligibility and value vary by product and carrier and may change over time; its evaluation can result in an adjustment if the received device fails the stated conditions. AT&T’s trade-in offer page also says other terms apply and notes that tax is charged on the full price at sale. Check the live terms for the exact model, storage, damage, lock status, and buying route before building the value into your calculation.

Rank #4
Samsung Galaxy A17 5G Smart Phone 128GB, US 1 Yr Manufacturer Warranty Blue | Large AMOLED, High-Res Camera, Durable Design, Super Fast Charging, Expandable Storage, Circle to Search, 2025
  • YOUR CONTENT, SUPER SMOOTH: The ultra-clear 6.7" FHD+ Super AMOLED display of Galaxy A17 5G helps bring your content to life, whether you're scrolling through recipes or video chatting with loved ones.¹
  • LIVE FAST. CHARGE FASTER: Focus more on the moment and less on your battery percentage with Galaxy A17 5G. Super Fast Charging powers up your battery so you can get back to life sooner.²
  • MEMORIES MADE PICTURE PERFECT: Capture every angle in stunning clarity, from wide family photos to close-ups of friends, with the triple-lens camera on Galaxy A17 5G.
  • NEED MORE STORAGE? WE HAVE YOU COVERED: With an improved 2TB of expandable storage, Galaxy A17 5G makes it easy to keep cherished photos, videos and important files readily accessible whenever you need them.³
  • BUILT TO LAST: With an improved IP54 rating, Galaxy A17 5G is even more durable than before.⁴ It’s built to resist splashes and dust and comes with a stronger yet slimmer Gorilla Glass Victus front and Glass Fiber Reinforced Polymer back.

Use the final offer or a clearly stated estimate that reflects the stated condition rules. If the device’s grade is uncertain, compare the purchase with and without the expected trade-in proceeds so you can see how much the decision depends on that valuation.

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Consider whether a locked phone fits your plans

Providers may lock phones to their network during a subsidy or installment period, and policies differ. An unlocked phone can be used on another compatible network, subject to the provider’s unlocking policy and the phone’s network compatibility. The FCC explains these issues in its 2024 Communications Marketplace Report.

Best Value
Tracfone Motorola Moto G 2025, 64GB, Saphire Blue (Locked to | Prepaid Smartphone- 6.6" 120Hz Display, 5G , 50MP Quad Pixel Camera, Long-Lasting Battery
  • Carrier: This phone is locked to Tracfone, which means this device can only be used on the Tracfone wireless network. Tracfone plan required, activating is easy, just 3 steps.
  • DISPLAY: Immersive viewing on a 6.7-inch super-bright 120Hz display with powerful stereo speakers and Bass Boost for cinematic entertainment.
  • CAMERA SYSTEM: Advanced 50MP Quad Pixel camera captures sharp, detailed photos and videos in any lighting condition
  • PERFORMANCE: Lightning-fast 5G connectivity paired with a powerful processor and RAM Boost for smooth multitasking.
  • BATTERY LIFE: Long-lasting 5000mAh battery with TurboPower charging technology delivers hours of power in minutes.

A locked promotional phone can still suit someone who expects to stay with that provider and finds the full offer worthwhile. An unlocked phone may better suit someone who values provider choice or expects to switch. Treat that flexibility as a practical benefit, not as a made-up dollar saving; verify compatibility and the specific unlocking terms before buying.

Prepare your old phone before handing it over

If you accept a trade-in, follow the seller’s instructions for packaging and delivery as well as these data-protection steps. The FTC’s phone disposal guidance recommends:

  1. Back up the information you want to keep.
  2. Remove the SIM card and any SD card.
  3. Erase personal data from the phone.
  4. Disconnect accounts and paired devices.

If you are not transferring the phone to another owner, recycle it rather than placing it in the trash. The FTC points consumers to manufacturers, wireless providers, local electronics stores, and EPA advice for recycling options.

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Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.

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