Battery degradation is a big problem for pre-owned iPhones. The following are some tips on how to correctly evaluate battery health before purchasing a used iPhone.
1. Battery Health in Settings
What can I do to verify?
Battery Health & Charging is found under Settings > Battery
Maximum Capacity
Performance capability that is peak (warnings could indicate throttle control).
Pros:
Apple's Official Measurement (most trustworthy)
This indicator lets you know if performance throttling occurs.
Cons:
You can restore the iPhone to its original state.
It doesn't show the charge cycle
2. Ask for the Charge Cycle Count
How do I check?
Coconut Battery (third-party tool) is required on Mac/PC
Normal range
<500 cycles = Good
500-1000 cycles = Worn
>1000 cycles = Needs replacement
Pros:
Maximum Capacity is not the only method to determine capacity
The actual time of your battery
Cons:
Requires connecting to an internet-connected computer
Some sellers won't let this test
3. Battery Drain Test: Actual World Battery Drain
How to check:
Use iPhone usually for at least 30 minutes
Battery drops more than 1% every minute under low lighting.
Pros:
Actual performance is revealed Not just numbers
Cons:
Time-consuming
Test your purchase online before purchasing
4. Watch for unexpected shutdowns
How to Check
If the iPhone is unable to function at a random rate of 10%-30%, inquire whether it's still functioning.
Battery Health is displayed under Settings > Battery.
Pros:
The battery's condition is deteriorating to the point of being fatal.
Cons:
There are some who may not show up immediately.
5. Make sure the battery has been replaced.
How to Check
Request receipts for repairs
To look for "Unknown" components, go to Settings > General and About.
Pros:
New batteries mean a longer battery life
Apple-authorized replacements are reliable
Cons:
Batteries from third-party suppliers are less durable and degrade faster.
6. Inspect for Swelling/Bulging
How to Check
Warpage in the back panel is simple to detect
If the screen is lifting from the frame, it's time to look into it.
Pros:
Swelling = immediate hazard (needs replacement)
Cons:
If the phone is inside a case, it's difficult to discern.
7. Fast Charging Testing
How do you check:
Make sure you use a charger with 20W or greater
Modern iPhones should charge at least 50% within 30 minutes
Pros:
The slow charging can be a result of an issue with the port or battery
Cons:
It could also be the cable or charger.
8. Review the chart of battery usage
How to check:
Go to Settings > Battery
Look for unusual background drain
Pros:
Reveals if battery dies excessively fast
Cons:
Patterns of use differ for different users.
9. Compare Apple Standards
Apple's guidelines for battery lifespan:
A 80% capacity is considered replacing
iPhones two years old are predicted to last for 500 cycles.
Pros:
Realistic expectations
Cons:
Users who are heavy may be more than averages.
10. Request Information About the Usage History
The Most Important Questions
Was it mostly billed over the night?
Did you use rapid charging a lot?
Is it heavily employed in video or gaming games?
Pros:
Extreme usage = faster degradation
Cons:
Sellers are not required to disclose the truth
Final Battery buying advice:
Apple battery changed with a brand new battery with a health score of 90% or higher and a cycle count of 400.
Acceptable acceptable: 85-89 percent (budget option), 600 cycles
Avoid: 80%, excessive swelling, or "Service Recommend" warnings Read the most popular visit website for iPhones for sale for more recommendations including refurbished handsets, cell phones, reconditioned mobile phones, 2nd hand mobile phones, buy your phone, second hand phones to buy, sale a phone, mobile sold, phones for you, buy mobile in uk and more.
10 Tips For Managing Activation & Icloud On Used/Refurbished Phones
Buying an iPhone that has Activation Lock could turn your phone an expensive piece of paper. How do you check iCloud status prior to purchase. Each method comes with pros and cons.
1. Apple Website: Check the status of Activation Lock
How to Check
Enter the serial or IMEI numbers on Apple's Activation Lock Status Page.
Pros:
Official Apple verification
If the seller gives you an IMEI number, you can test if it's working before buying.
Cons:
Some sellers are reluctant to disclose IMEI prior to the purchase.
2. Perform a full reset on the individual
How do you check:
Go to Settings > General > Reset > Erase All Content and Settings
When asked for Apple ID password when resetting iCloud Locked
Pros:
Most reliable test conducted in person
Cons:
Requires the cooperation of the seller
Erases all data (seller may refuse)
3. Check "Find My iPhone" Status
How to Check
Go to Settings > [Apple ID name]> Find My Find My iPhone
If enabled, device is linked to an account
Pros:
Verify your purchase prior to you purchase
Cons:
Sellers are able to remove it for a short period
4. Find the "Hello screen" in Startup
How do you check:
If you own an iPhone you can still show the "Hello screen".
If it is configured to Home Screen only, you might be able to bypass it.
Pros:
The red flags are evident
Cons:
Certain sellers can restore correctly
5. Verify iCloud Account in Settings
How to check:
Apple ID at the top of the page for Settings.
Sign in with an email address if it's listed
Pros:
It tells you if a particular account is still being used.
Cons:
You may ask the seller to remove your account after you show them proof of your purchase.
6. Make sure you have the original receipt.
Why it is important:
Apple requires proof of Purchase to Remove Activation Lock
Pros:
Genuine sellers will provide receipts
Cons:
The majority of iPhones in good condition do not have paperwork
7. Verify the Remote Management (MDM lock)
How to Find
During set-up, If "Remote Management" appears corporate/school lock
Pros:
Reveals hidden enterprise locks
Cons:
Only only after reset
8. Third-Party IMEI Checkers
Services such as:
Swappa ESN Checker IMEI24
Pros:
Confirms status of blacklist/FMI
Cons:
Certain charges and fees
Not 100% certain
9. Test iCloud Features
How to Find
Enable iCloud backup or Find my
If blocked account still linked
Pros:
Proves complete iCloud functionality
Cons:
Account Access is required
10. Beware of claims for iCloud Unlocked
Red Flags
"Bypassed by DNS method"
It works but you can't upgrade iOS
Pros:
Beware of illegal bypasses
Cons:
A lot of sellers cover up this information.
Important Takeaways
Always check Activation Lock before paying
Do not trust any device that is signed into an Apple ID
Do not use iCloud bypassed iPhones
Best Practice
Verification of Apple Stores
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