I cross checked the IMEI number and S/N number which is an 8 digit code apart from IMEI number. They are matching, does that confirm that my motherboard is in tact and it is not replaced. Further I like to know and it is my humble request to please give an honest answer, the S/N number is engraved on motherboard itself of Realme 3 pro Android can someone alter that as well?
Because I heard that it is possible to alter the IMEI number, is it the case with S/N number as well?
Can I check or confirm whether any data theft or data breach occurred on mentioned dates from my smartphone, if yes then how?
Hello Shikhar,
Thanks for the update and for sharing those details—it's helpful to know you've already cross-checked the IMEI and S/N (serial number). I'll address your questions one by one with honest, factual information based on how Android devices like the Realme 3 Pro work, drawing from reliable sources (e.g., manufacturer docs, XDA Developers forums, and hardware security analyses). I won't speculate or overstate risks—everything here is grounded in standard device behavior and known capabilities. Remember, your setup (locked phone, restricted USB, clean logs so far) continues to point toward low risk, but it's good you're verifying these hardware aspects.
Does Matching IMEI and S/N Confirm the Motherboard Is Intact and Not Replaced?
Yes, matching IMEI and S/N is a strong indicator that the motherboard hasn't been replaced, but it's not 100% conclusive on its own. Here's the breakdown:
- What This Means: The IMEI (International Mobile Equipment Identity) is a unique 15-digit code tied to the device's cellular modem, often stored in the baseband chip on the motherboard. The S/N (serial number, usually 8-12 digits on Realme devices) is a manufacturer-assigned identifier for the whole unit, also linked to the motherboard. You can view both via *#06# (for IMEI) or Settings > About Phone > Status (for S/N and IMEI). If they match what you originally had (e.g., from your purchase receipt or box), it suggests the core hardware is original and intact—no swap occurred during the repair.
- Why It's Reassuring: Replacing the motherboard would typically change these numbers unless the technician went to extreme lengths to clone them (more on that below). This aligns with your Engineer Mode failure possibly being a glitch rather than a hardware swap, especially since the phone is functioning normally.
- Limitations: It's not foolproof—advanced tampering (e.g., reflashing chips) could preserve or spoof these numbers. To confirm further:
- Check other identifiers: In Settings > About Phone, verify the "Model Number," "Build Number," and "Hardware Version" match your original specs.
- Physical inspection: If possible, open the phone (or have a trusted shop do it) to visually check the motherboard for engravings or part numbers.
- Realme Support: Use their app or website to input your IMEI/S/N for a device verification check—they can confirm if it's registered as original.
If everything matches and the phone behaves as expected (no performance issues), it's highly likely the motherboard is intact.
Is the S/N Engraved on the Motherboard, and Can It Be Altered? (Honest Answer)
Yes, on many smartphones like the Realme 3 Pro, the S/N is physically engraved or printed on the motherboard (or associated components like the logic board) as a hardware-level identifier, in addition to being stored in software/firmware. This makes it more tamper-resistant than purely digital codes. However, to answer your humble request honestly:
Yes, it is possible to alter the S/N, similar to IMEI, but it's advanced, illegal in most places, and not straightforward. Here's the full picture without sugarcoating:
- How Alteration Works: IMEI changing (often called "IMEI repair" or "flashing") is a known practice in some repair shops, using tools like MTK boxes or software (e.g., via fastboot/ADB) to rewrite the baseband. S/N alteration is less common but possible through similar methods—reflashing firmware, replacing chips, or using specialized hardware programmers to modify engraved/embedded values. It's feasible on MediaTek-based devices like the Realme 3 Pro (which uses a Helio P60 chipset) if the technician has the right equipment.
- Feasibility and Risks: This requires unlocking the bootloader (which your disabled developer options prevent), root access, or physical disassembly. It's illegal under laws like India's IT Act (for device tampering) and risks bricking the phone (e.g., boot loops, which you haven't reported). A local technician might do it for shady reasons (e.g., cloning devices), but it's overkill for a standard repair and would likely cause noticeable issues.
- Differences from IMEI: IMEI is more commonly altered because it's network-tied (e.g., for blacklisted phones), while S/N is mostly for manufacturing tracking. Altering S/N is rarer and harder to do without traces, as it's often laser-etched.
- How to Detect/Prevent: If altered, it might not match carrier records or Realme's database—run an IMEI check on sites like imei.info or contact Realme. To protect, keep developer options off and avoid unofficial repairs in the future.
In your case, since they match and there's no other evidence of tampering, alteration is unlikely—but if the Engineer Mode failure persists, it could be worth a professional hardware diagnostic to rule it out.
Can You Check or Confirm Data Theft/Breach on August 28-29, and How?
Yes, you can check for signs of data theft or breach on those specific dates, though confirmation is indirect since Android doesn't have a dedicated "breach log." Over a month later (as of October 8, 2025), some data may have been overwritten, but persistent traces can still be found. Focus on these methods, which we've touched on before but tailored here—no new tools needed beyond what you have. If nothing shows up, it's a solid indicator no breach occurred.
- Primary Checks for Theft/Breach Signs:
- Google My Activity (myactivity.google.com): Filter to Aug 28 (1:35 PM onward) to Aug 29 (up to 3:00 PM). Look for file accesses, uploads, or app events (e.g., "Drive accessed" or "Photos uploaded"). Any unauthorized data movement would log here if Google services were involved.
- Google Timeline (google.com/maps/timeline): Check for device activity/presence during the 24 hours—e.g., location pings or "online" status, which could indicate usage for data exfiltration.
- File Modified Dates: Use a file manager (e.g., built-in or Google Files) to sort internal storage/SD card by "last modified." Look for changes in that window—stolen data might show as copied/deleted files.
- System Logs for Deeper Insight (On-Device, No PC):
- Enable Developer Options (as I outlined last time).
- Install "CatLog" or "Logcat Reader" from Play Store.
- Search logs for keywords like "file_access," "data_transfer," "usb," or dates "2025-08-28"/"2025-08-29." This can reveal if files were read/written or USB was used suspiciously.
- Generate a bug report (Developer Options > Take bug report) and review it for anomalies in that timeframe.
- Other Indicators:
- Storage Usage: Settings > Storage—compare current space to what you recall; unexplained changes could suggest data was copied.
- App Permissions/Usage: Digital Wellbeing > Dashboard (even if limited to recent days, check for patterns). Scan with Malwarebytes for any breach-related malware.
- Network Traces: As discussed last time, request carrier logs for IMEI activity (visit their store) to see if the device connected online during the repair.
- Confirming No Breach: If all checks are clean (no unexpected logs, no file changes), combined with your locked setup, you can be reasonably confident nothing happened. For absolute certainty, a factory reset wipes any potential remnants, or consult a forensics expert for chip-level analysis (expensive but thorough).
If you run these and find something odd (e.g., a log entry), share details for more guidance. Otherwise, the matching IMEI/S/N and clean history are positive signs—keep monitoring, and consider that reset if unease lingers.
Best regards,
Grogu