The sad boy with a cellphone might be sad because he didn't get the response he was hoping for on the phone. Or maybe he found out something he didn't want to know. It's hard to say exactly without more context.
Maybe he lost his favorite toy or didn't do well in a game.
Maybe he lost his favorite toy or got into a fight with his friend.
There are various reasons. Maybe his pet ran away, or he was bullied. It could also be that he saw something really sad happen to someone else and that made him feel bad.
Maybe he lost his favorite toy or didn't do well in a game.
The Astro Boy cartoon on cellphone usually has colorful graphics and smooth animations. The characters are recognizable and the storylines are engaging.
Maybe the kid wants to stay connected with friends or access educational apps for learning.
Maybe he lost his favorite toy or got into a fight with a friend.
Maybe they had a fight or lost something precious to them.
Maybe he lost his favorite toy or had a fight with his friend.
Maybe they had a fight or lost something important to them.