iOS update
hello, I have an iPhone 6, 32GB, and is bought last February 2018/ it's still working well but my phone is stuck at iOS 12.5.5. Even if I want to update it, it always says "your software is up to date." Which made my phone insufficient in storage because the System has almost 10+GB. It's also hard for me to use it since it always lags and I'm not able to experience new iOS features, I can't even download Netflix since it requires iOS 13 and up, so I wasn't able to download everything in the app store. The only way I can see know is to buy a new one but we're not that rich, so I'm hoping there's still a way. Thank you.