Join Date: 24th July 2007
Thanked 14 Times in 14 Posts
It could be a number of things, but it's possible that there could be some conflicting Profiles vs Mobile Data set ups, especially if you've moved from one provider to another with the same phone.
so to check your Mobile Data settings...
Settings > Mobile Data > Mobile Data Network - in this section are all the Mobile Data settings - your network provider should be able to send these over the air to you and you can then update them.
You may also wish to check profiles (you may have installed one or more which are conflicting)
Settings > General > Profiles & Device Management (scroll down to find) depending on your network you may have one or more profiles here.
Again, speak to your service provider who may be able to push the correct or updated setting for you.
Finally, depending on your network area it's sometimes possible that just flicking the airplane mode on and off will connect you back to the network on a different connection, sometime i do this if 4G goes off and it sticks on 3G and by toggling airplane mode on and off you disconnect and rejoin the network.
hope you get it solved and hope these suggests help.