i totally understand how you felt..although this is my share and why i actually ended up switching back to 4S:
1. samsung skype can't call contacts' numbers directly
2. no lock screen camera/apps; to have lock screen apps = no security. (yes I knew there are apps out there that addresses the issues, but after spending 3 hours, $5 to buy customized builds that disappointed me, and checking out at least 3 apps, none of them offers the balance of looks, simplicity, security, entire choices of apps, speed) you can still recommend me apps if you want.
3. my sms function crashed several times. it's extremely frustrating because i'll have to wait for it to lag-load itself..and technically the point of sms is speedy and instantaneous exchange and response.
4. can't make in-car call through bluetooth pairing (if you've got a solution, let's hear)...check #12 for my worst rant
5. can't use in-car usb device properly
6. even though replaceable, the battery dies quick. carrying a spare battery is such an hassle
7. can't read song titles properly (downloaded an app for this..but seriously, do i have to do research everytime for everything that i wanted to do?)
8. slower response due to android software (there's a website which compared response times, and ios did have the fastest time of all, followed by the s4..but still significantly different...i think around 70-80 ms)
9. lot less versatile keyboard and writing pad. word choices offered<autocorrect(even though this thing screwed me over couple times)..(best comparison is that perhaps i did get used to the ios typing interface..but i can literally type like its my second nature without looking down..and it'd come out exactly what i want)
10. music randomly played often go back to the same pattern
11. music sync issues (i can have 100 items on my playlist, but only 17 gets transferred. i'd have to do the rest by hand)
12. the WORST thing of all was the pairing of the system with the in-car audio not working properly when im using my GPS. it's happened at least twice where while the audio for music works fine, when i use my GPS with my in-car audio player, this is what happens:
"at 200m, ---------"
in other words, the most important part of the message, which is the instructions to go where or make which direction, GETS cut off with NO instructions. it just simply left me hanging "at 200m, then what??", and we all know when you're driving and especially on a highway where you needed to know where to go, this is disastrous.
i'm sorry samsung, but i'm not ready to let myself get killed in traffic by this software bug. i tried google map and waiz(the handy gps software), and both had the same issues.
i personally played with computers often, changing registries, cracking, researching and looking things up on my own. i had no problem with needing to find solutions...but then as you can see, a lot of my issues are things that probably can't be exactly addressed..
i use my phone in a very speedy and efficient manner, and if i feel i have to look down to type and it takes more maneuvering and attention than usual to get what i wanted, then it's hassle.