textContentType breaking change clarification (#3624)

* Add documentation about breaking change

* Better wording

* Update docs/textinput.md

* Update website/versioned_docs/version-0.71/textinput.md

---------

Co-authored-by: Luna Wei <[email protected]>

Author: lunaleaps

docs/textinput.md

@@ -853,6 +853,12 @@ Possible values for `textAlign` are:
 
 Give the keyboard and the system information about the expected semantic meaning for the content that users enter.
 
+:::note
+[`autoComplete`](#autocomplete), provides the same functionality and is available for all platforms. You can use [`Platform.select`](/docs/next/platform#select) for differing platform behaviors.
+
+Avoid using both `textContentType` and `autoComplete`. For backwards compatibility, `textContentType` takes precedence when both properties are set.
+:::
+
 For iOS 11+ you can set `textContentType` to `username` or `password` to enable autofill of login details from the device keychain.
 
 For iOS 12+ `newPassword` can be used to indicate a new password input the user may want to save in the keychain, and `oneTimeCode` can be used to indicate that a field can be autofilled by a code arriving in an SMS.

website/versioned_docs/version-0.71/textinput.md

@@ -853,6 +853,16 @@ Possible values for `textAlign` are:
 
 Give the keyboard and the system information about the expected semantic meaning for the content that users enter.
 
+:::note
+[`autoComplete`](#autocomplete), introduced to iOS in 0.71, provides the same functionality and is available for all platforms. You can use [`Platform.select`](/docs/platform#select) for differing platform behaviors.
+
+Avoid using both `textContentType` and `autoComplete`.
+:::
+
+:::caution
+A breaking change was introduced in 0.71 where `autoComplete` overrides `textContentType` on iOS when both properties are set. >=0.71.5 reverts the breaking change such that `textContentType` takes precedence.
+:::
+
 For iOS 11+ you can set `textContentType` to `username` or `password` to enable autofill of login details from the device keychain.
 
 For iOS 12+ `newPassword` can be used to indicate a new password input the user may want to save in the keychain, and `oneTimeCode` can be used to indicate that a field can be autofilled by a code arriving in an SMS.