🔍 Why verifying a second-hand phone is essential
Before you reach for your money, you should understand that a phone that seems flawless can hide major defects: degraded batteries, components replaced with cheap parts, or even devices locked or stolen.
According to statistics, over 70% of second-hand phones checked in service centers have hidden defects. That is why a tool like codat.ro is essential in the verification process.
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🧾 IMEI verification – the first mandatory step
The IMEI (International Mobile Equipment Identity) is a unique identification code for each phone – essentially the device's digital fingerprint.
To find the IMEI, you can use one of these methods: • Dial *#06# on the phone keypad – the code will automatically appear on the screen. • On iPhone: Settings → General → About. • On Android: Settings → About phone → Status → IMEI information. • Check the back of the phone or the SIM tray – sometimes the code is engraved there.
After you have the code, enter it on codat.ro for a complete verification in just a few seconds. The platform checks global databases and instantly shows you whether the phone is stolen, blocked, or has other hidden issues.
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🚫 Check if the phone is blocked or stolen
One of the most important checks is the blacklist status. A phone on the blacklist means it has been reported as stolen, lost, or has unpaid debts to the carrier. Even if it looks perfect, a device on the blacklist will not work on any mobile network.
On codat.ro you can immediately find out: • whether the device is network-locked (carrier-locked) or unlocked; • whether it works on all networks or only on a specific one; • whether it has unpaid installments; • whether the Apple warranty is still valid.
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🍏 iPhone-specific checks 1. iCloud lock and Find My iPhone (FMI) The biggest danger on a used iPhone is iCloud lock. If the phone is tied to the previous owner's account, you won't be able to use it at all. Check Settings → iCloud and make sure it does not require someone else's password. On codat.ro you can quickly check if FMI is active. 2. Battery health Go to Settings → Battery → Battery Health. If the percentage is below 80% or the message "Service" appears, the battery needs replacement. Note: some cheap aftermarket batteries may falsely report 100%. 3. Face ID / Touch ID Try to set up a new fingerprint or Face ID. If you get an error, the sensors have been replaced or disabled – which significantly lowers the phone's value. 4. Messages about unknown component If a message appears about an unknown battery, display, or camera, it means that the parts have been replaced with non-original ones.
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🤖 Android and Samsung-specific checks 1. Check IMEI and network Dial *#06# and check the IMEI on codat.ro. Insert a SIM card and test calls, 4G/5G, and mobile data. 2. Google account (FRP – Factory Reset Protection) If the phone is locked to the previous owner's Google account, you won't be able to use it after a reset. Check Settings → Accounts or perform a reset. 3. Battery On some Samsung models you can check battery health in Device Care → Battery Health. You can also use apps such as AccuBattery. Test fast charging – if "Fast charging" does not appear, the controller may be defective. 4. Display and touch Check the screen on white and black backgrounds for burnt-in pixels or burn-in. For Samsung, dial #0# to access the testing menu.
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🔢 Useful codes for testing the phone
General codes: • *#06# – displays the IMEI; • #0# – testing menu for the display, speakers, and sensors.
Samsung codes: • *#0228# – battery information; • *#0842# – vibration test; • *#0588# – proximity sensor test.
⚠️ Use these codes with care and back up your data beforehand.
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🧠 What to physically check on the phone • Exterior appearance: scratches, dents, drop marks; • Charging ports: check wear; • Cameras: test clarity and focus; • Speakers and microphone: make a test call; • Buttons: ensure they work properly; • Liquid damage: look for signs of corrosion or moisture.
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🧾 The importance of warranty and a tax invoice
If you purchase a second-hand phone from a store, ask for warranty and a tax invoice. In Romania, the warranty for second-hand products is a minimum of 12 months.
Avoid purchases without warranty – they are a major risk. If you buy from a private individual (OLX, Marketplace), go together to a service for a professional check.
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💡 Why codat.ro is the ideal solution
Codat.ro is the Romanian platform that simplifies checking second-hand phones. Results are displayed instantly – in 5 seconds, not after 30 minutes like on other sites.
Advantages: • Complete verification: IMEI, lock, repairs, Apple warranty; • Automatic querying of international databases; • Clear recommendation score; • Report explained in plain language; • Simple interface, no ads; • History of verifications in your personal account.
💬 A client story:
“Aproape am luat țeapă cu un iPhone 12 de pe OLX. Verificarea pe Codat.ro a arătat că era blocat în rețeaua Orange UK. M-a salvat de o pagubă de 2,000 de lei.”
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✅ Final tips for a safe purchase • Don’t rush – check everything carefully; • Test the phone yourself; • Check the IMEI on codat.ro; • Ask for an invoice or proof of purchase; • Compare market prices; • Avoid offers that are “too good to be true”; • Prefer specialized stores.
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🛡️ Conclusion: Your safety matters
Buying a second-hand phone doesn’t have to be a risky adventure. With the help of codat.ro and this guide, you can make a safe choice, saving money without unnecessary risk.
Regardless of model – iPhone, Samsung or another brand – checking the IMEI on codat.ro gives you the peace of mind you need. In just a few seconds you’ll know if it’s worth the investment.
🔒 Always verify, buy smart, and choose codat.ro for maximum safety.