I made a big jump. iOS 11.4 to 13.3.1 I was half asleep and sick of the stupid iPhone SE telling me to update all the time.
The update has made my phone almost worthless. Here is why:
Before the update, my phone hooked up to my wifi and stayed hooked up. Zero problems with any app except the constant battery bs that came with the ios 11 update.
Now with 13.3.1 Apple has changed the wifi connection. Now my iPhone PRETENDS to stay connected via wifi but does not actually do it! I shut off cellular and only use wifi. But the new os is trying to push phone users to just leave data on. Great IF you have unlimited data, hell for everyone else. My phone is just now turning 2 yrs old but hasn't worked well since i started updating the iOS!!! I don't buy Apple hardware to have it become useless after 2 years. iOS software updates are a scam, ya ya security, that is their excuse, but they can change anything they want every update and no impartial judge even gets to look at what they have done. It is wrong that they can disable their hardware like this, it should be against the law to prevent users from reverting to a devices original OS.