No it's not wrong to feel that way, but I get her point that she might think it's 'time consuming' to talk with you on the phone when you could also skype or w/e. I think it's just her way, quite a lot of women don't like to talk on the phone (although more men doesn't). But still, I would tell her you like her and that you hate seeing her not much, that she maybe could talk to you more on the phone or w/e she likes, to be more in touch with one another. I think she would get that, and you won't force her to pick up the phone, but just where she likes to contact you with. Maybe she just doesn't like talking on the phone and you should respect that.
The part about the male friends is pretty shit, because if you tell her anything about that she is probably going to be really, really pissed. So I would try to make her be happy to be with you again, go with surprises or anything. Bring her something for in the bedroom, or some romantic flower, or just take her to diner or the movies. Just something that you think she would like, and I hope that will eventually make her spend more time with you. If she doesn't and she still likes you, just respect that she is just not into the talking like you are.
Still, it's quite sucky that you have a long distance relationship and have some jealousy towards her, I totally understand you but it's going to be quite difficult if there doesn't change anything. Just try to be peaceful with her, if there isn't anything that says she's cheating on you, then just say to yourself she isn't. Otherwise you'll never find inner peace while she's your girl
I hope I helped you out mate