I just recently purchased the Fairy Pink Tamagotchi On from Barnes and Noble. Here’s my thoughts after the first 24 hours. I did a lot of research prior to purchasing Tamagotchi On. Tamagotchi On is also known as Tamagotchi Meets in Japan and Tamagotchi Some in Korea. The Tamagotchi Meets has a lot of bugs which were all fixed for the English Tamagotchi On. The bugs included things such as draining the batteries in just a day or Tamagotchis getting glitched when they evolved.
I also read that a lot of people received used looking Tamagotchi On from amazon who had badly scratched screens despite being brand new. Luckily mine was in perfect condition. I don’t know if the scratched screens were just from Amazon, or maybe a bad batch, afterall it’s been out for about 2 months now so my tama is from a different manufacturing batch.