I have built an iPhone App that uploads a photo from the device onto my remote server.
This works on all networks and carriers except on Vodafone over 3G in the UK.
While testing with o2 and Orange the photo uploaded correctly over all internet connections - WIFI, 3G, Edge, GPRS, but on Vodafone anything other than WIFI will fail. I have also tested the app abroad in Austria and Germany and that did work so it seems to only be an issue with Vodafone UK when trying to upload over a 3G connection.
I am using an HTTP request to Post the photo to the server, and when sending with Vodafone 3G the files array comes back empty on the server. This has been tested with file sizes going as low as 150bytes with still the same empty response.
Can anyone help with this matter or point me in the direction to someone that can?
Many thanks in advance