Shocking Things You Must Check Before Buying a Mobile! (ఇవి తెలుసుకోకపోతే మోసపోతారు!) Things Must Check Before Buying a Mobile, Buying a new or second-hand phone from an unknown shop or dealer can be risky. Many people unknowingly purchase faulty or refurbished phones, thinking they are getting a brand-new device. Before you finalize your purchase, here are critical things to check before buying a mobile to ensure you get a genuine, functional, and safe device.

1. Check SAR Value Using #07# (మీ ఆరోగ్యానికి హానికరమా? SAR విలువ తెలుసుకోండి!) Must Check Before Buying a Mobile
📲 How to Check: Dial *#07#
on the phone’s dial pad.
What It Does:
SAR (Specific Absorption Rate) indicates how much radiation your body absorbs when using the phone. If the SAR value is too high, it can be harmful to health. The ideal SAR value should be:
- Less than 1.6 W/kg (India Standard)
- Less than 2.0 W/kg (Europe Standard)
Why It’s Important? Must Check Before Buying a Mobile
Phones with high SAR values emit more radiation, which may cause headaches, sleep disorders, and long-term health issues. Always buy a phone with a low SAR value to ensure safety.
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2. Test Mobile Hardware Using #0# (మీ ఫోన్ లోపల ఏమైనా సమస్య ఉందా? ఇలా చెక్ చేయండి!)
📲 How to Check: Dial *#0#
on the dial pad.
What It Does:
This code opens a hidden hardware test mode that lets you check the following:
✅ Display Colors (Dead Pixels)
✅ Touchscreen Functionality
✅ Speaker & Microphone Clarity
✅ Camera Quality (Front & Back)
✅ Vibration & Sensor Accuracy
Why It’s Important? Must Check Before Buying a Mobile
Second-hand or defective phones might have display issues, microphone/speaker problems, or faulty cameras. This test ensures all essential hardware components are working perfectly.
3. General Mode & Storage Check Using #9900# (మీ ఫోన్ డేటా, స్టోరేజ్, & లాగ్స్ చెక్ చేయండి!) Must Check Before Buying a Mobile
📲 How to Check: Dial *#9900#
and select “General Mode”.
What It Does:
This code helps check system logs and storage status. It also lets you delete unnecessary logs, freeing up space and improving performance.
Why It’s Important?
Fake or refurbished phones might have pre-installed hidden files that slow down performance. Checking this ensures you are getting a fresh device without old data.
4. Find Out First Activation Date Using #12580# (ఫోన్ మొదటి సారి ఎప్పుడు ఆన్ అయిందో తెలుసుకోవాలా?)
📲 How to Check: Dial *#12580#
on the dial pad.
What It Does:
This code shows detailed information like the software version and the exact date the phone was first turned on.
Why It’s Important? Must Check Before Buying a Mobile
Some dealers sell used phones as new ones. Checking this helps verify whether the device is actually new or has been used before.
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5. Must Check Before Buying a Mobile IMEI Verification Using #06# (ఫోన్ నిజమైనదా, దొంగతనం అయ్యిందా? IMEI చెక్ చేయండి!)
📲 How to Check: Dial *#06#
to display the IMEI number.
What It Does:
The IMEI (International Mobile Equipment Identity) is a unique 15-digit code that helps identify whether the phone is original or counterfeit.
✅ Verify IMEI on IMEI.info
✅ Check if the phone is reported stolen or blacklisted
Why It’s Important? Must Check Before Buying a Mobile
Buying a phone with a fake or blacklisted IMEI can lead to network bans or even legal issues.

6. Test Phone Sensors Using ##4636## (మీ ఫోన్ సెన్సార్లు పని చేస్తున్నాయా?)
📲 How to Check: Dial *#*#4636#*#*
on the dial pad.
What It Does:
This menu lets you check essential phone details, including:
✅ Battery Health & Temperature
✅ Signal Strength
✅ Wi-Fi & Network Information
Why It’s Important? Must Check Before Buying a Mobile
This helps verify the phone’s battery condition and network stability before purchase.
7. Hidden Refurbished Status Using ##786## (ఫోన్ అసలైనదా, రీఫర్బిష్డ్ ఫోన్నా?)
📲 How to Check: Dial *#*#786#*#*
to open the RTN Menu.
What It Does:
This reveals if the phone has been refurbished or replaced by the manufacturer.
Why It’s Important?
Some sellers might sell refurbished phones as new. This code helps detect such frauds.
FAQs (తరచుగా అడిగే ప్రశ్నలు)
1. Can I check if the phone is stolen before buying?
Yes, use *#06#
to check the IMEI number and verify it on official databases.
2. How can I know if the phone battery is in good condition?
Dial *#*#4636#*#*
and check battery health status.
3. Is it safe to buy second-hand phones?
Yes, but only after checking IMEI, activation date, hardware tests, and SAR values.
4. What is the best way to verify if a phone is refurbished?
Use *#*#786#*#*
to check if the device was factory-refurbished.
5. Why should I check SAR values?
High SAR values mean more radiation exposure, which can affect your health. Always buy a phone with a low SAR value (<1.6 W/kg in India).
Final Thoughts
Before buying a phone from an unknown dealer or shop, these things to check before buying mobile will protect you from scams and defects. Always verify the phone’s authenticity using hidden codes, check for hardware faults, and ensure a low SAR value for safety.
Be smart and check these before you buy – it could save you money and trouble!