None Translate element not working with iPhone

[GA]

Last week i started to put the Google Translate Element on my mobile
skin for iPhone.

Every time when i want to translate i get the message:

Error: The server could not complete your request. Try again later.

I don't know if it has worked on iPhone before. I never could
translate with the Translate Element on iPhone. I try to translate
since a few days.

Maybe this is only a temporary error?

It works fine on PC which has a user agent like iPhone (Safari or
Squid proxy).