The capacity of the iPhone's storage is directly related to its usability and its potential for resale. Like batteries, the storage capacity can't be upgraded in the future, which makes it vital to confirm prior to purchasing. Here's how to properly examine the storage on used iPhones and the benefits and limitations of each method.
1. Verify Actual Storage
How can I confirm?
Click on General Settings > Settings iPhone Storage
Shows that are not used. available space
Verifies if seller has deliberately cleared storage prior to the sale
Pros:
Storage padding: the truth is revealed
Real-time use
Cons:
Temporary files could distort numbers
Requires full device access
2. Check the advertised capacity vs. actual capacity
How to confirm:
Comparing the seller's claim in Settings General > About
Watch out for:
64GB 128GB scams
Fake "upgraded storage mods
Pros:
Catches dishonest listings
Takes 10 Seconds
Cons:
Some refurbishers enhance the storage space of legitimately.
3. Test Storage Speed
How to Check
Record 4K video for up to 5 minutes
When your phone crashes or becomes sluggish in any way, it could indicate that you have a storage issue
Pros:
NAND chips aren't performing as they are
Shows of real-world performance
Cons:
Time-consuming
Not definitive
4. Verify for storage-related errors
Warning Signals
Storage almost full, but with only a tiny amount of content
Apps crash frequently
Camera not able to save photos
Pros:
Indicates deeper hardware problems
Cons:
There could be an issue with your software
5. Verify Physical Storage vs ICloud
Key Distinction
Settings > [Your Name] > iCloud shows cloud storage
iPhone Storage is shown under Settings > General
Pros:
Prevents "iCloud-dependent" deception
Cons:
iCloud can be relied upon by genuine users
6. Find out if Storage Modifications are required.
Red Flags
Upgrade to 1TB claims
Storage sticker that is not matched
Hacks to store data after jailbreak
Pros:
Avoids unstable modified devices
Cons:
Certain third-party upgrades work very well.
7. Test App Installation Capacity
How can I Verify?
Install at minimum 3 games each with 2GB of memory.
Make sure to ensure that the installation has been completed
Pros:
The storage system functions.
Cons:
Requires data/time
8. Check your Storage History
Forensic Clues
The "Recently removed" folder is home to remnant files.
System folders with odd names
Pros:
Reveals past storage issues
Cons:
Needs technical expertise
9. Make use of the typical usage as an example of a comparison
Storage Guidelines
64GB: Light users (no 4K videos)
128GB: Average users
256GB+: Photographers/gamers
Pros:
Set achievable goals
Cons:
It is possible to use a variety of methods.
10. Verify Through Serial Number
How to check:
Apple's Coverage Page
Verify the original storage configuration
Pros:
Authoritative verification
Cons:
Doesn't display any modifications
Smart Tips for Buying
Purchase up to 30-50% more room than you will ever need
Warn Signs: "Lots Of Free Space" on an old device (may be a sign of a wiped error)
Beware of cheap, high-capacity units that aren't reasonable.
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Ten Tips To Check The copyright Lock & Network Compatible On Refurbished Or Used Apple Iphones
If you buy an used iPhone or refurbished iPhone that is not equipped with the correct copyright lock, or bands that are not compatible with your iPhone, it can cause you to spend a lot of dollars. Here's a guide on how to test network compatibility prior to buying, with pros and cons for each method.
1. Check copyright Lock Status via Settings
Be sure to check:
Settings General > About About
Check for "copyright Locked" or "No SIM Restrictions".
Pros:
Instant verification if unlocked
It works without the need for a SIM Card.
Cons:
Although some iPhones state "No SIM restrictions", they are still locked
2. Insert a SIM card from an alternative copyright
Verifying:
Take out a SIM card from a different provider (e.g. in the event that you purchase an Verizon iPhone insert a TMobile SIM).
If you are required to input an "Activation Code" your phone is copyright-locked.
Pros:
Real-world test (most trustworthy)
Cons:
The ability to use multiple SIM cards is required.
Seller may refuse to allow this
3. Utilize Apple's IMEI Check (GSX Report)
What to look for:
Input the IMEI on Apple's Check Coverage Page.
Certain websites of third parties (like IMEI.info), also show the status of locks
Pros:
Official Apple data (if unlocked via Apple)
Cons:
The unlocks from third-party providers aren't always displayed
4. You can request the original copyright & unlock proof
Key Questions
"Which company first sold this iPhone?"
"Do you have an unlock confirmation email?"
Pros:
The unlocks for specific carriers are permanent.
Cons:
The documentation is usually lacking in a lot of sellers.
5. Find "Flex" Policy iPhones (Automatically unlocked)
How does it work:
Apple Retail (not the carriers) typically unlocks iPhones within 60 days.
Pros:
No need for airline approval
Cons:
It is difficult to confirm without the original receipt
6. Check the Network Bands on Your copyright
What to look for:
Comparing iPhone models (A-numbers) with copyright bands
T-Mobile is an example. T-Mobile needs band 71; AT&T needs band 14.
Pros:
This ensures the full strength of signal
Cons:
Technical (requires an extensive amount of research)
7. Check the speeds of 5G/4G (if it is).
How to check:
Insert your SIM Card into the SIM card and perform the speed test.
Check to see if it is compatible with 5G/LTE, not only 4G.
Pros:
Confirms actual performance
Cons:
Requires active SIM & data plan
8. Check for "SIM is not supported" error codes
Red Flags:
The startup screen displays "Invalid Sim"
"No Service", even in the event that you have a adequate coverage
Pros:
Hard locks exposed
Cons:
It could also be due to a malfunctioning SIM tray
9. Avoid "Blacklisted" or financed iPhones
How to Check
Use IMEI checkers (Swappa, T-Mobile's IMEI check)
Beware of the item in case it's reported lost/stolen
Pros:
Avoid buying a blocked mobile phone
Cons:
Some sellers conceal the status of their blacklist.
10. Purchase only "Factory Unlocked Phones" (Safest Alternative)
How to Confirm:
Original packaging states "SIM Free"
General > Settings > Displays about "No SIM restrictions"
Pros:
All carriers are covered.
No unlock headaches
Cons:
Most expensive
Best Advice
Make sure you test your SIM card prior to purchasing
Don't think that you are "locked, but will unlock in the future".
Never buy an iPhone blacklisted
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