Can't you just switch your phone to silent and turn off the vibration alert?
Something sized like the Galaxy S2?
I can, but iOS 6 introduced a great new feature (which I'm sure Android will copy soon) called "Do Not Disturb". You set it up how you want it, i.e you can have certain people get through to you to call you (let's say Parents, Kids if you have them, Wife/Girl, or work related person to wake you up if urgent matter), and also set it up to where after a certain amount of call attempts (of which will be silenced), the person can get through (again, in case of urgent emergency). I miss that convenience.
Another issue I'm having is feeling the wrath of Android's fragmentation. Makes it harder to find support for issues, i.e when you search for something, you have all these different OS versions, all these different hardwares to sift through. Also, I realized I'm running Jelly 4.1, and there's apparently a 4.2 out there, which has a better keyboard.... but guess what? That version and its improvements aren't available to me. Really annoying. I realize that people use 3rd party Apps to fix a lot of shortcomings (like the OEM interface looks of the GS3 with the ugly icons or lousy Samsung Keyboard), but as good as it is to have options, I hate having to pay for a Swiftkey to get an approved keyboard when this phone for its price should come with a state of the art keyboard already. Not to mention, all these 3rd party Apps drain extra battery, and Swiftkey has been reported by many on Jelly Bean to consume lots of battery. I'd rather not deal with that so I keep the lousy Samsung keyboard.
Also, with Android, there are a lot of "hidden energy consumers" that fortunately they show you, but you have to find them, or "Force Quit". With iOS, you just shut down the Apps and you're ensured that nothing is hiddenly running.
OH! And another thing that's annoying to someone like me who reads a lot of articles; iOS's "double tap to perfectly fit text to screen" option is extremely intelligent, it formats the text to perfectly utilize the screen-space, yet not exceed it. My GS3's "double tap to fit text" is horrible, it always blows the text up to be too big, so I have to resize it manually down.... then when I'm using the phone with one hand, it's too big for me to actually zoom out with one hand (as I was easily able to on my iPhone 4S), lol.
And yeah, perhaps the GS2's size is that just-right balance. Phone size is something very personal, I've come to realize. People who say "one is better than the other", or "bigger is better" are being selfish. It's completely personal.
I think those all (in these last two posts) sum up the things that I've found disappointing with Android (as my intents were to list certain negatives rather than come across like I hate it or am disappointed in the overall user experience, of course there are pro's I have and can list as well).
What's funny is I've never been someone who likes to customize the engineering of things (I always like to customize surface aesthetic, however). I.e, I never work on my own cars, and being a music aficionado, I never like to have tons of knobs to tweak when it comes to levels.... I like a few knobs to control (Bass, Treble, really), and for the system to be smart enough to optimize it perfectly for me. That's why I think iOS is more "for me". I find it overwhelming to have to find all these third party sources to literally go into my phone and tweak things, and then of course give me a gazillion options to tweak myself. However, to some, that's a great necessity. I figure, if I have to keep modifying things, then what am I paying for? Apple has a holistic approach that tries to offer you the best, most clean experience, while Android gives you kind of a cluttered "canvas" that needs to be extensively modified, but if you're game for it, then the sky's the limit. "So similar yet so different" is the way to put it.
