The battery of a pre-owned iPhone can be damaged. How can you assess the health of the battery before buying and what each option provides.
1. Check Battery Health in Settings
What to look for:
Battery Health & Charging is found in Settings > Battery
Maximum Capacity (% ) indicates wear on the battery)
Peak Performance Capability (warnings indicate the possibility of throttling)
Pros:
Apple's official measure (most trustworthy).
Performance Throttling indicator indicates if active
Cons:
You can restore the iPhone to its original condition.
Doesn't show charge cycles
2. Charge Cycle Count
What to look for:
Requires Mac/PC running Coconut Battery (3rd-party tool)
Normal range
<500 cycles = Good
500-1000 cycles = Worn
>1000 cycles = Needs replacement
Pros:
This is a more precise measurement than just "Maximum Capacities"
The true time of your battery
Cons:
Requires a computer
Some sellers won't let this test.
3. Battery drain in real-world scenarios
How to check:
Utilize your iPhone as normal for up to 30 minutes.
Make sure the battery isn't decreasing more than 1% minutes with the light on.
Pros:
Reveals actual performance, not just numbers
Cons:
Time-consuming
Hard to test if purchasing online
4. Be Prepared for Unexpected Closures
How to Find
If your iPhone randomly fails at 10%-30%, inquire whether it's still functioning.
Battery Health can be found under the Settings tab > Battery.
Pros:
The battery's condition is severely degraded
Cons:
It is possible that you won't see the results immediately
5. Check to See if the Battery Has Been replaced
How to Find
Request receipts for repairs
You can check for warnings about "Unknown parts" in Settings > General.
Pros:
Battery life can be extended by new batteries
Apple-authorized replacements are reliable
Cons:
Cheap third-party batteries degrade faster
6. Check for swelling/bulging
How to check:
Check for bent panels on the rear.
If the screen seems to be being lifted from the frame it is important to check.
Pros:
Swelling = immediate hazard (needs replacement)
Cons:
If your phone is within the case, it's hard to tell.
7. Tests for Fast Charging
How to Check
Utilize a 20W+ charger
It should charge 50% within 30 minutes (modern iPhones)
Pros:
Instability to charge = battery issue or port issue
Cons:
Additionally, a cable or charger could be damaged
8. Review graphs of battery usage
How to Find
Choose Settings > Battery
Check for an unusual background drain
Pros:
Find out whether your battery is rapidly dying.
Cons:
User behavior varies for each user.
9. Compare Apple Standards
Apple's Battery Lifespan Guidelines:
80% of capacity = Replace.
500 cycles = Typical for 2 year-old iPhones
Pros:
The expectations should be realistic.
Cons:
The averages could be surpassed by heavy users
10. Use History: Ask questions about the use of
Answers to Key Questions
Are the majority of your battery fully charged over the course of a night?
"Did you utilize fast charging a lot?"
It is often employed in video or gaming games?
Pros:
Extreme usage = faster degradation
Cons:
Sellers are not required to reveal the truth
Final Guide to Buying a Battery:
Apple-replaced batteries boast the highest health rating and 400 cycles.
Acceptable : 85-89% 600 cycles (budget Option)
Avoid: Warnings that say "Service Highly Recommended", "80%" or "Swollen". Take a look at the top rated my sources about used iPhones for sale for site info including 2 hand phone, used cell phones, cheap phones uk, smartphones for sale, mobile phone purchase, phones 4 u, mobile telephones for sale, used mobile phones, reconditioned mobile phones, second hand phones and more.
Ten Tips To Identify Original And Aftermarket Parts On Used/Refurbished Apple Iphones
Knowing whether an iPhone is refurbished or used has Apple original parts or cheaper replacements from the market could make a huge difference in terms of performance and longevity. Here are some guidelines on how to tell the difference. Each approach has advantages and disadvantages.
1. Check for "Unknown Parts".
What to look for:
Settings General > About
Be on the lookout for "Unknown Part" warnings (iOS 15.2+)
Pros:
Apple's official detection for battery displays, batteries and cameras
Instantly detects copyright parts
Cons:
Compatible with iOS 9 and up
A few repairs from third party repairers are not identified.
2. Display Quality
The signs that aftermarket screens are available:
Poor color accuracy
Uneven brightness
Delayed Touch Response
Pros:
Obvious visual differences
Cons:
Untrained eyes are easily fooled by premium screens that are sold aftermarket
3. Verify the authenticity of the battery
How to Check
Battery Health is accessible in Settings.
It is likely that the device has been replaced if it says "Service" and doesn't display any data.
Pros:
Apple's official Battery Health Check
Cons:
Third-party batteries may have false health information
4. Examine Camera Performance
Aftermarket Camera Signs:
In certain lighting conditions, blurry focus may occur.
Poor low-light performance
Inconsistent colors
Pros:
You can try the product prior to purchasing.
Cons:
Small differences in design may not be of much importance for casual users.
5. Be aware of screws that are not matched.
Original iPhones Have:
Screw heads with uniform shapes
No scratches on screws
Pros:
Reverse phone display to determine if the phone was unlocked
Cons:
Some repair shops use proper tools
6. Verify water resistance
Aftermarket Parts Often:
Insufficient sealing
Test failed for IP68
Pros:
Essential for long-term endurance
Cons:
Without equipment that is specialized, it is hard to conduct tests
7. Compare Weight and Feel
Aftermarket parts could include:
The phone will feel softer.
Have uneven gaps
Pros:
Feedback tactile and immediate
Cons:
Subjective assessment
8. Review Repair History
Ask Seller For:
Repair receipts
Apple Store service records
Pros:
Confirms part authenticity
Cons:
Most private sellers lack documentation
9. Touch ID / Test Face ID
Aftermarket Parts are Often:
Fail biometric identification
Work inconsistently
Pros:
Security feature that is critical to security
Cons:
Certain repair services from third parties keep the functionality
10. Buy from Reputable Repairers
Best Options
Apple Certified Refurbished
Amazon Renewed Prime
Pros:
Genuine parts are guaranteed
Cons:
Higher price than random sellers
Smart Buyer's rule:
Original parts are always preferred for all critical components (screens, batteries)
Consider aftermarket for minor repairs (charging port, speaker)
Beware of iPhones with multiple replaced parts
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