Degraded batteries are a common issue for used iPhones. How to evaluate the health of the battery before buying and what benefits each method offers.
1. Battery Health Check in Settings
How to Identify
Battery Health & Charging > Settings
Maximum Capacity
Peak Performance Capability
Pros:
Apple's official measurement (most exact)
This indicator will let you know whether performance throttling is occurring.
Cons:
The iPhone can be reset using the restore function.
No charge cycles are displayed.
2. Ask for Charge Cycle Count
How to Find
Coconut Battery is required to be used on Mac and PC.
Normal range:
<500 cycles = Good
500-1000 cycles = Worn
>1000 cycles = Needs replacement
Pros:
The "Maximum Capacity" as a whole is no longer accurate
The true age of your battery
Cons:
Needs to be connected to a computer
Some sellers refuse to allow this test
3. Battery Drain: Experience the Real World
What to look for:
Use iPhone normally 30 minutes or more
Battery drops more than 1% per minute under low the light.
Pros:
Actual performance is revealed (not just numbers)
Cons:
Time-consuming
It is difficult to test online purchases. test.
4. Expect Unexpected Shutdowns
How to Check:
If your iPhone is unable to function at a random rate of 10%-30%, ask whether it's still working.
Battery Health > Settings > Battery Health.
Pros:
The battery's condition is severely degraded
Cons:
You may not see the results immediately
5. Make sure the battery has been replaced.
How to check:
You can request receipts of repairs
To receive "Unknown Part" alerts Go to Settings > General > About.
Pros:
New batteries last longer. life span
Apple-authorized replacements are compatible.
Cons:
Third party batteries that are cheap get worse faster
6. Look for swelling or bulging
What to look for:
Look out for damaged back panel
If the screen is lifting from the frame, it should be checked.
Pros:
Swelling = immediate hazard (needs replacement)
Cons:
It's difficult to tell if the phone is in its case
7. Fast Charging test
How to Find
Use a 20W+ Charger
Modern iPhones can charge up to 50 percent within 30 minutes
Pros:
Slow charging = battery or port problem.
Cons:
A defective charger/cable could be an additional possibility.
8. Review graphs of battery usage
How do you check:
Select Settings > Battery
Examine for unusual background drain
Pros:
Battery life is abnormally high?
Cons:
Usage patterns vary per user
9. Compare Apple's Standards
Apple's Battery lifespan guidelines:
80% capacity = Replace.
<500 cycles = Expected for 2-year-old iPhones
Pros:
Setting realistic expectations
Cons:
Heavy users may exceed the averages.
10. What is the story behind the use of this term?
What are the key questions?
Was it mostly charged over the night?
Did you make use of fast charging often?
Did you use it for gaming or video?
Pros:
Extreme usage = faster degradation
Cons:
Sellers must provide all information in complete honesty
Final Battery Buying advice:
Apple battery replaced with a new one that is healthy with a score of 90% or higher and a cycle count of 400.
Acceptable: 600 cycles, 85-89 The acceptable range is 85-89 %.
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10 Essential Tips For Checking The Activation Lock And Icloud Status On Used/Refurbished Iphones
If you purchase an unlocked iPhone (iCloud Lock), can make your phone an expensive paperweight. You can check iCloud status with the following methods before you buy an iPhone.
1. Apple's website allows you to check the activation lock status.
How to Find
Go to Apple's Activation Lock Status Page and enter the IMEI or serial number.
Pros:
Official Apple verification
Working before purchase (if the seller provides the IMEI).
Cons:
Some sellers don't divulge IMEI with buyers prior to purchase.
2. Perform a Reset Completely in Person
How to check:
To erase all settings and content, go to Settings > Reset General > All Content.
If prompted for an Apple ID password after reset iCloud is locked
Pros:
Most reliable test conducted in person
Cons:
The requirement for cooperation from the seller
The deletion of all data is possible (seller may decline).
3. Check "Find My iPhone" Status
How to check:
Find My iPhone by going to Settings, then [Apple ID] and then Search My iPhone.
If the device is still connected to an account
Pros:
Check it out before purchasing
Cons:
Seller could disable it temporarily
4. Look for "Hello" screen on Startup
How to Find
An unlocked iPhone will show the "Hello" setup screen
If it takes you directly to Home Screen may be bypassed in a way that is illegal
Pros:
Red Flags:
Cons:
Certain sellers can restore correctly
5. Verify iCloud Account in Settings
How to Check
Apple ID at the top of the Settings page
Even if no email address is provided however, you're still enrolled to
Pros:
Shows if the account still active
Cons:
Seller is able to remove the account if they are able to show You
6. Ask for the original receipt
Why it is important
Apple requires evidence to remove Activation Lock
Pros:
Receipts from legitimate sellers are provided
Cons:
Some used iPhones are missing paperwork
7. Check for "Remote Management" (MDM Lock)
How to Find
If you see "Remote Management", this indicates that your school's or corporate lock is controlled remotely.
Pros:
Reveals hidden enterprise locks
Cons:
The only time it is apparent is after a reset
8. Third-party IMEI Checkers
Services such as:
Swappa ESN Checker - IMEI24
Pros:
Confirm the status of the blacklist or FMI.
Cons:
You may be charged a charge
Not 100 100% reliable
9. Test iCloud Features
How to Find
Use Find My Device and iCloud for enabling backups.
If blocked account still linked
Pros:
Proves full iCloud capabilities
Cons:
It requires a login account
10. Beware the "iCloud Unlocked" claims
Red Flags:
Method to bypass DNS
The app "Works" but it is unable to update iOS
Pros:
Beware of illegal bypasses
Cons:
A few sellers conceal this fact
The most important takeaways
Always check Activation Lock before paying
Never trust any device still associated with an Apple ID
Do not use iCloud bypassed iPhones
Best Practice
Verification of Apple Stores
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