Per the discussion in the comments:
It may be due to some i18n issues, depending on the locale returned by the webview, which may change depending on the device, but also on the Android version.
You should check there's an nls bundle corresponding to the webview locale deployed with your app. For example, if locale is en-us
, you should copy dojo/nls/core-web-layer_en-us.js
into your app.