forwarded .xls or .doc attachements from iphone native mail client there will be corrupted

Hi,

If I forward emails with .xls or .doc attachments from native mail client there will be corrupted when I try to open them in excel or word.

If I forward the same emails with .xls or .doc attachments from PC (e.g. outlook) I can open them without problem.

IOS version: 9.3.2

Do you have same issues? Could you have any suggestion?

Thanks in advance.

Regards,

Levente