I hope to support iOS and Android input methods.

## What problem does this solve or what need does it fill?

A description of why this particular feature should be added.

I am writing an online game that requires input of account and password information, but this cannot be achieved on iOS and Android.
I need text input function, but currently it only works on Windows and cannot input any text through input methods on iOS and Android.
## What solution would you like?

The solution you propose for the problem presented.

## What alternative(s) have you considered?

Other solutions to solve and/or work around the problem presented.

## Additional context

Any other information you would like to add such as related previous work,
screenshots, benchmarks, etc.

Start by locating the existing Windows text-input implementation and reviewing how Bevy handles platform-specific input. Then compare the available iOS and Android input-method behavior and determine the required scope for account and password text entry. Done means text input through those platforms' input methods works for the described game use case, with platform coverage verified.

Written by the indexing model from the issue text.