I had a 3, 3g, 4, and 4s, but went to Android for a bigger screen. The bugginess I've encountered with Android seems to mostly be around all the custom manufacturer builds and their hardware. Tried the HTC One and it drove me nuts. Went to the Note 3 and was fairly happy with it. With the 6+ I am now back to using Apple and no immediate intentions of leaving.
Here are my criticisms of each:
Android:
- None of them seemed to have super accurate touch screens. My typing was worse on both the One and the Note 3 than my 4s. That shouldn't be. I fly on the 6+ now!
- Copy and Paste was not universal. For example, I could copy a pic from my album and past it in a text just fine. If you copy an image from the web it was hit or miss if you got a little box or the image url, but never the actual picture like an iPhone would.
- Different manufactures seem to implement "standards" differently. Fitbit uses BT 4.0, but only worked with certain BT 4.0 capable phones. Fitbit was doing software updates on there end to make it work across more Android phones.
- You either have to go Nexus or you get a frankenstein cobbled together user experience that is a mix of Android and what a particular manufacturer came up with. Current Nexus devices are last year mid-tier devices. Upcoming Android L Nexus devices may prove to be interesting.
- Android's always seem to slow down and get laggy after a few months of use and nothing seems to truly speed them up short of a full reset.
- For a company that pioneered, what I am sure is the most popular website ever, around it's simple elegance... seems to have never heard of the term "less is more" when it comes to their mobile OS.
- Even today there is a lot of compatibility issues with other devices and Android, where as almost everything works with iPhone.
- Very few 3rd party accessories that are device specific, besides cases.
- Syncing media and data is a laughable joke. Honestly. Your best bet is to just mount the phone as a filesystem and manage it yourself.
- No standardized method to backup and recover your phone. A million ways to do it? Sure. But see the less is more comment above.
- Android fanboys who scoff and berate anyone that says anything positive about Apple.
iPhone (6+ centric where applicable, my opinion don't go all Super Apple Defense League if you disagree)
- 1GB of ram. My phone pretty much reloads every tab, even with only a few open. It may also be responsible for some of the occasional choppy user interface. In addition I'd like to see what applications developers come up with when they have additional headroom.
- Mapping is improving, but still not as strong as Google.
- I prefer Siri, but I did like the Google Now cards. I'd like to see Apple come up with something competitive.
- I'm not obsessed with ultra-thinness and would have rather my 6+ was literally .7mm thicker and didn't have a protruding camera. Bigger battery and/or smaller top bezel would have been icing.
- Glad to see some form of widgets turn up in iOS 8. I think they are often a bit overrated, but there are a few that are nice to have. Now that they are here, I'd like to see them with their own section in the drop down "area" instead of tacked onto the "today" section.
- I'd like to see dynamic app icons. I wouldn't let developers go bat sh** with it and turn them into micro widgets, but allow weather apps to show a graphic of the current weather (sun, rain, clouds, etc) and the temp. Have music apps, including Apples, show album art when it's playing in the background.
- Would like to see native rendering on the 6+.
- Clean up iCloud services. Some apps store things directly there and are only visible to those apps, other's use the newer iCloud drive, some things like photo's do both. There are currently 4 different ways that photos can end up being copied to iCloud. Sometimes I feel they forget their own UI ethos. For some types of data I have to choose between it expiring in 2 minutes or 1 year. Nothing in between. Then for photos I have my choice of 4 different ways to upload them to iCloud, and not just 4 choices, but any combination of those choices. lol
- With the 6's, I feel they put form over function.
- Apple fanboys that breathlessly defend every criticism of iPhones and berate people people they disagree with.