Tone's new budget Android - the e20 - costs just $180 (19,8000 yen) despite having a triple camera setup, and it's most significant feature is Smartphone Protection.
The AI software is built into the camera app and blocks users from taking nude selfies.
If the device's image-processing algorithm thinks you've taken a naked snap, it will block the photo from being saved to your gallery.
The feature's aim is to protect Japan's youngster from being taken advantage of, and taking photos they might later regret.
Meanwhile, the e20 can also been connected to another phone, which means a parent or guardian can be alerted if their child attempts to take an inappropriate picture.