I've been in a couple of long distance relationships and it is tough but I don't think there is any definite answer to your questions. I also think it depends on how "long" the distance is.
My first serious relationship was long distance for the first nearly 3 years and we would call most days, text most days, though not always frequently. We would see each other as often as money/work would allow (usually at least once a month). I think it is important that you both maintain a social life separately - e.g. one of you isn't constantly stuck at home not wanting to go out while the other is out every other day. He, at the time, had more of a social life than I did (I'm quite shy and was working in an office full of middle aged women - I was 17 when we first started dating - so didn't really have much in common with them, which made it harder to meet new people. The friends I had at school had all pretty much moved away or were in relationships so didn't really see them) and that did upset me at times - not so much that I resented him having a social life as I was sad that I didn't really have one. Our long term plan was always to save some money, for me to find a job where he lived (he was willing to move to where I was but I hated it so that was immediately not an option) and move in together and live happily ever after. We did end up moving in together but the relationship was...difficult after that and eventually ended 3 years after I'd moved (though was really over before that).
Second serious long distance relationship was a lot more long distance (different countries). We used to Skype most days but not much contact aside from that. I went to visit him once, he came to visit me once (but for longer term - long story but let's just say it wasn't because he couldn't bare to be apart from me). We both had social lives outside of the relationship and he would never hesitate to put his social life first. Long term wise, he would talk about engagement and marriage (far too early and definitely for the wrong reasons) but ultimately, we were completely wrong for each other, with hindsight he was showing at least some signs of being emotionally abusive and in the end he cheated on me, after going to a party with some friends and basically telling his friends to stop him from cheating on me because he knew that it was going to happen. Apparently he'd always fancied her but he did try to get his friends not to let it happen, so he seemed to think that made it their fault, not his. We carried on for a while after that but that, along with some other things I don't want to type out here, meant that my only option was to end things.
My current relationship was long distance for 8 months-ish. We would text most days, call less frequently and would see each other when we could. I moved back to be with him as soon as I could (we lived in the same town, then I had to move somewhere else for a while - again, long story).
I've had other experiences but they are the more serious relationships, and probably far more than you wanted/needed to know anyway, so I won't bore you with the rest!
I really think it varies depending on so many factors - how far apart you are, work situations, personality, so what is right for you might not be right for someone else.
The one definitive thing, though, is that long distance relationships are tough and definitely take an awful lot of work so it won't work if you aren't both 100% in.