Installing an app is no problem, and I was using a calendar app that worked okay. But I was unable to find an email app that I liked and all the password manager apps worked (or work) by (ab)using an accessibility feature that had a pretty severe impact on the performance of my phone.
And uninstalling an app is impossible on stock Android, if that app is made by Google.To achieve that I had to unlock the boot loader of my phone, for which there was no official method.
Meanwhile on iOS I can use the default mail and calendar apps that work fine and my password manager integrates perfectly with the os, while I don't need to use iCloud at all if I don't want to.
Those 3 apps weren't the only reason to switch from os, but they did make the choice for, and switching to, iOS a lot easier.
You need to unlock your bootloader, install custom recovery (TWRP) and then install a custom ROM (I use LineageOS). It's optional to install Google into AOSP-based ROMs.
You need to find instructions based on your specific device. Each one is different.
And uninstalling an app is impossible on stock Android, if that app is made by Google.To achieve that I had to unlock the boot loader of my phone, for which there was no official method.
Meanwhile on iOS I can use the default mail and calendar apps that work fine and my password manager integrates perfectly with the os, while I don't need to use iCloud at all if I don't want to.
Those 3 apps weren't the only reason to switch from os, but they did make the choice for, and switching to, iOS a lot easier.