No!
Violet lamp is a special light source, which can emit ultraviolet light waves, which is widely used in scientific research, medical diagnosis, anti-counterfeiting detection, UV curing, industrial leak detection and other fields.
Violet light (ultraviolet light) is not a straightforward and effective tool for detecting whether a phone has been used.
For mobile phones, using purple light to illuminate the surface of the mobile phone can reveal some traces that are not usually noticeable, such as cleanliness, fingerprint residue or traces of special glue used in some repair processes.
However, this does not definitively prove whether the phone has ever been used, as even if it is a new phone, it may leave similar traces during production or shipping.
Determining whether a phone has been used or not mainly relies on the following more straightforward methods:
1. Visual inspection
Check your phone's case, screen, camera, and more for abrasions, scratches, dust, or fingerprints.
2. Battery loss
Check the battery cycle count, if the value is not zero or high, it may indicate that the phone has been used.
3. Internal software status
Check your phone's system settings for user data, installed apps, or system update history.
4. IMEI query
Query the history of your phone through the IMEI code to see if it has been activated, the warranty period or the loss information.
5. Packaging integrity
Check whether the packaging of the mobile phone is unopened and whether the accessories are brand new.
So, while the violet light isn't a tool specifically designed to detect whether a phone has been used, it can help you discover some physical information to some extent.
If you have questions about your phone's usage history, it is recommended that you contact the manufacturer or service provider of your phone, or consult a professional phone repair technician.
Related reading: What are the different types of light sources in violet lamps?
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