Just being a curious bug but do you know what kind of phones the boys have?
Rapmon, J-Hope, Suga, Jimin - Silver iPhone 6
Jin - Rose Gold iPhone 6s
Jungkook, V - Silver iPhone 6s
I’m not sure who has the Plus sizes of their respective phones, but I know Jungkook had a Space Grey iPhone 6+ before he shattered the screen and ended up getting a Silver iPhone 6s, so he might have the 6s+.
(This info is accurate to about a month or so ago, but I’m not sure if any of them decided to upgrade phones since switching mobile carriers, as they are currently endorsing SK Telecom and were using LG U+, olleh, etc. prior to getting an endorsement deal with SK Telecom.)