Both are well known horror movies who will surprise you.
Both movies contain simmilar characters as both also revolve around the supernatural.
Both are also made by the same producer..
In One Missed Call you die after recieving a call,
While in Ring you die after watching a VideoTape..
Both pioneered the whole "america remaking asian horror" films in the early 2000s and both are about a vengeful female spirit set out on attacking anyone who crosses them. if you've seen the american version of either films you need to watch the original. they're so much better.
Both are most famous horror movies about contemporary Japanese urban legends......................................
Both deal with curses and have similar themes of a never-ending curse.
It's like a saga..they're both about Sadako..Ring is the first movie, then it goes on with Ring 2, then It's Ring 0, which is like a spin-off, and it seems like they also made a Korean adaptation Ring Virus..and there's also the last untill now, Sadako 3D
Same vibes: both are horror movies from the late 90s / early 00s. Tormented people turned into ghosts looking for answers through technology.
Can't watch Ring Virus without watching the very first film in the series
Both of them involves the usage of suspicious tapes and a creepy female "ghost". Overall, I'd also say they have pretty similar atmospheres.