I tried to update my iPhone 6s to iOS 13 but have been unsuccessful. Then states “Your software is up to date iOS 12.5.2. Wont update past 12.5. Thanks

CStell wrote:

I get this message. So I was told to delete the app and reinstall w the new Apple ID but no success

https://discussions.apple.com/content/attachment/a4e2ea3c-ab49-4347-ad16-15844c9b1728

That's a different problem.

Apps are permanently tied to the Apple ID that was used to download/install them.

If you've changed your Apple ID, you won't be able to update that app, unless you delete it using the old Apple ID, restart your iphone, sign in with the new Apple ID, then redownload/reinstall that app (if compatible with iOS 12.5.2)

CStell wrote:

Thank you so much. So does that means I need a new phone if I want to use my apps?

You're welcome (sorry I gave you bad news)

iPhone model 6 was released on September 2014, and, due to its limited CPU/RAM it cannot run iOS versions beyond 12.5.2.

Regards

Giulio

iphone6 last supported ios is

Current: iOS 12.5.2[10] (16H30)[11] released March 26, 2021

iPhone 6 - Wikipedia

one could be tempted to believe your iphone6s is really an iphone6

The message you get means that you do not have a 6s model, just a 6.

See this compatibility list:

Then you have an iPhone 6 which cannot update past iOS 12.5.2.

If you want to use the newer apps, then you will need a newer phone. The apps that you currently have should continue to work.

If you want to use apps that require iOS 13 or higher, you will need a newer phone.