Here's a very succinct description of my situation: I use an iPhone (and an iPad) in an environment where ports other than 80 and 443 are blocked.
Therefore, it is impossible to use Siri, Maps, as well as an array of other native apps and protocols (IMAP, for example).
There is absolutely no way for me to unblock these ports or use an alternative network. Even though this is not too inconvenient, it still is an annoying context.
I found a solution that worked for a while: since I was still considered a student by my university, I was able to use the school's VPN using Junos Pulse (Juniper's app on iOS). Unfortunately, I am not anymore and can't go for this option. So I'm trying to come up with a replacement.
I've tried many VPN apps available on iOS but all of the ones I've tested resort to either L2TP or PPTP and, therefore, can't go through the network's firewall.
I don't want to jailbreak my device, so I suppose OpenVPN is not an option.
I am therefore looking for one of the following things: a VPN service that would work with iOS over port 443 (like my ex-university's one; I am willing to pay a couple of dollars each month) or a VPN server software (or even hardware, but these are seriously out of my league) that I could set up at home. Or maybe something else I don't know about?