A "you problem" means a problem with YOU! It means the cell phone user is the problem, not the device nor social media or tech companies, as some might suggest. Hope this helps!

Actually, "you" is the adjective describing the type of problem. * it's a big problem * it's a strange problem * it's a financial problem * it's a you (kind of) problem * it's a me problem In other words, it's saying that there is a problem, but the problem is with you. It's your fault, and you need to fix yourself, not fix the technology.

"A you problem" means a problem that is caused by your own actions and habits, not someone else or something else. The implications of this sentence is that solving the problem requires your own personal effort. This phrase is slang, and is not proper English. However, it is fairly commonly used in recent years.

It means that the source of problem is you, not anyone else.

It means that the "technical devices" that people use such as cell phones, tablets or laptops are not the problem. But, the real problem is the "people" who use these technical devices.