[Galaxy S I9000 Q&A, Help & Troubleshooting] GalaxyBrad:
For those interested in switching to iOS:

So yeah, after using the awesome Galaxy S+ for 2 years I committed the greatest sin that an android user could commit. I switched to iOS, iPhone 5c more exactly. The reason why I did this is simple: I judged the Android OS by my laggy experience with my Samsung handset. Was it a wrong decision? Well, it depends. I'll talk about my experience with the iPhone in sections:

Music

The first few weeks were alright, but then, after a month, I really understood what I did. I really dislike carrying with me too many devices, so all my music, photos, ebooks etc. are now on my iPhone. And putting things on your iPhone means SYNCING, which also means ITUNES. And man, it really is a nasty piece of work. I could no longer simply drag on drop my music on my SD card and instead I had to rely on Apple's buggy software which is both time-consuming and annoying to get used to. Also, another weak point of the whole sync thing is that manually deleting songs from your phone is useless, because eventually you will end up syncing again, which means that everything that you deleted will be put back. Surely, you can sync only selected playlists, but personally I would like to have an option to delete from my computer all the songs that I deleted from my phone. However, I can say that after the first 6 months of usage, I finally got the hang of it. Now my libraries are much more organised and everything is clean. The key is to accept the way Apple software works and not go against it.

Apps

Generally talking, apps are great. They look fancier than on Android and almost never lag. However, their functionality is not as great as it is on Android. As iOS has no file management system available for the user, apps cannot access locally stored files. Simply put, if you create a word document using let's say Google Docs, only Google docs is going to be able to modify it. The same goes with apps that edit music. A "ringtone maker" app trims the song, but then you have to sync with iTunes and get the ringtone you have created with your phone on your computer. Then you have to put it in the ringtones section of the iTunes and sync it back to your iPhone. In Android, you simply grab the file and put it in the ringtones folder and voilà, there you have your new ringtone.

Games are really good, but most of the time they are paid. This is not a problem for me as I never play games on my phone, but it may be a problem for heavy gamers. Sideloading(=stealing) apps requires jailbreak which I'll talk about in the next section.

Customisation

While on Android, I was really obsessed with customization. My OCD( i.e. Obsessive–compulsive disorder) made me spend a lot of time getting what seemed to be the "perfect setup". Having switched to iOS I now realize that personally I do need to to personalize my phone that much..for me, icons and folders will do it now. However, these days I got really angry because I really wanted to switch to 2G as I had to leave my cellular data on most of the day and 3G would have drained my battery way too fast. So, having used my iphone for 6 months now, I finally jalibroken it last week. I spent like 3 days to customize everything to my liking and then I realized that my OCD(it is a serious mental disease, please don't make fun of it or of the people who suffer from it) had taken over again so I switched back to stock iOS.

Available customization tweaks: kind of everything. From widgets to themes, everything is available. Let's say that once you are jailbroken you can customize almost as musch as on android(please don't kill me for saying it, but it's quite true).

Battery

As I mentioned, my battery lasts pretty long with the exception of leaving 3g/4g turned on all the time. I browse the web, listen to music, make phone calls and use social apps such as Facebook, Whatsapp etc. and I never run out of juice. However, remember that I said I never play games. I don't know how much the battery would last if you run away from monkeys or use birds to kill pigs for hours.

Storage

I have the 16 GB model and I've never run out of space. The thing I really like about iTunes is that it lets you convert your songs to a lower bit rate so the take up less space. The lack of an SD card slot was frustrating in the beginning, but not anymore. Please take into consideration that Apple did a really good job with the required space for the firmware. I have 13.5 GB available out of 16 GB. A 16 GB Galaxy S4 has only 8.8 GB available as the rest is used by bloatware and Touchwiz. Of course, you can always get a microSD card, but still, there's so much inefficiency in managing the space.

And finally updates

This was my main reason for buying the iPhone. Updates come yearly, and every iPhone has a 3 year lifespan. My iPhone will be up to date for at least 2 more years while Samsung will only provide like 1-2 minor updates for its non-flagship devices and 2-3 for the old flagships. Compare Galaxy S i9000 with iPhone 4. Both were released in 2010. The last update that the Galaxy S received was 2.3.x Gingerbread, while iPhone 4 is running iOS 7, the same as the iPhone 5s, Apple's 2013-2014 flagship.

I also want to talk about the fact that before updating, iTunes backups everything. I really like being able to backup all my settings and apps, so that I don't have to rely on any third-party software.

Conclusion

I like my iPhone, I really do. Although I still miss some features from Android, I can get by with my current phone. While using the iPhone you have to trust iOS and abstain from trying to modify things too much. This experience taught me that a smartphone doesn't have to be really complicated and with a lot of features. As long as I con browse the web smoothly, watch some videos and use some cloud services I'm fine with it.

I will keep using my phone until the end of its lifespan, more exactly until Apple stops updating it and that might be around 2017-2018. After that I might consider switching back to an Android phone. But who knows? Technology is evolving so fast that smartphones might be replaced by smart watches by then.

Anyway, I hope those who consider switching to iPhone will appreciate this long post. Thanks again for the awesome development that has been done for the old but amazing Galaxy S+.

Good luck! :)