Buying a used mobile phone is one of the smartest ways to save money — a one-year-old flagship often costs half its original price. But the used market also has its traps: phones with replaced screens, weak batteries, blocked IMEIs, and hidden faults. Whether you are buying from a shop or a marketplace like FoneMandi, run these seven checks before you pay.
1. Verify the PTA Status
This is check number one for a reason. Dial *#06# to get the IMEI, then SMS it to 8484. Only proceed if the result says the IMEI is compliant. A non-PTA phone will be blocked from Pakistani networks, and the PTA tax to register it can wipe out all your savings. Also confirm the on-screen IMEI matches the IMEI on the box.
2. Test the Battery Health
Battery is the most common hidden problem in used phones:
- iPhone: Go to Settings > Battery > Battery Health. Anything below 85% means noticeably reduced backup; below 80% and you should budget for a battery replacement.
- Samsung: Dial *#0228# for battery status, or check Settings > Battery > Battery health (on newer models).
- Other Android: Use a battery health app, or simply use the phone for 15–20 minutes and watch how fast the percentage drops.
Ask the seller about the charging history — a phone that was always charged overnight with a fast charger ages faster.
3. Inspect the Screen Thoroughly
Open a plain white image and a plain black image in full screen. Look for:
- Dead pixels or bright spots (visible on black background).
- Screen burn-in or discoloration (visible on white background) — common in AMOLED screens.
- Touch dead zones: drag an app icon slowly across the entire screen. If the icon drops, that area has touch issues.
- Check the refresh rate feels smooth — a replaced low-quality screen often feels laggy.
4. Test All Cameras and Sensors
Open the camera app and test the front camera, rear camera, video recording, flash, and zoom. Take a photo and check it for blurry spots (which indicate a damaged lens). Also test:
- Fingerprint sensor and face unlock.
- Proximity sensor (screen should turn off during calls).
- Speakers and microphones — record a voice note and play it back.
- Charging port and all physical buttons.
5. Check for Water Damage and Repairs
Look at the SIM tray area — most phones have a water damage indicator sticker that turns red or pink on contact with liquid. Ask the seller directly if the phone has ever been opened or repaired. Signs of third-party repair include:
- Uneven gaps between the screen and the frame.
- Screws with worn heads or missing screws.
- A screen that does not sit flush with the body.
A phone opened by an unauthorized repair shop is more likely to develop problems later.
6. Confirm the Phone Is Not Stolen or iCloud/Google Locked
Ask the seller to factory reset the phone in front of you, then complete the initial setup yourself. If the phone asks for the previous owner's Apple ID or Google account, it is activation-locked — do not buy it, as you will never be able to use it fully. Also check the IMEI against the PTA portal to make sure it is not reported blocked.
7. Compare the Price and Get a Receipt
Check the current market price of the same model in the same condition on two or three sources before negotiating. If the deal seems too good to be true, it usually is. Always get a written receipt with the shop name, phone model, IMEI, and date — reputable shops provide this without being asked.
Where to Buy Used Phones Safely in Pakistan
You have three main options, each with trade-offs:
- Local mobile markets: The biggest advantage is physical inspection — you can run every check above on the spot and negotiate face to face. Markets in cities like Chiniot, Lahore's Hafeez Center, and Karachi's Saddar have dozens of competing shops, which keeps prices honest.
- Online marketplaces: More variety and easy price comparison, but you cannot inspect before delivery. Stick to platforms with verified sellers, real shop addresses, and cash-on-delivery options.
- Friends and family: Often the safest source — you know the phone's history. Still run the PTA and battery checks; friendship does not prevent a degraded battery.
Negotiation Tips That Actually Work
Used phone prices are almost always negotiable. Check the market price on two or three sources first so you know the fair range. Point out genuine issues you found (battery at 84%, minor scratch) to justify a lower offer — sellers expect this. Paying in cash on the spot often gets you a better price than asking for installments or delayed payment. And never show too much excitement; the calmer you are, the better your deal.
Final Word
A careful 20-minute inspection can save you from months of regret. Take your time, do not feel pressured, and walk away from any deal where the seller rushes you or refuses a check. Buying from verified shops — where listings show PTA status and shop details upfront — takes most of the risk out of the process.