I have a Blackberry 9900 with Koodo and last week I went to Cuba so I kept my phone shut off for the week to avoid roaming charges. But since I got back and turned my phone back on, my Facebook and Twitter apps are only working if I have Wifi on. This has never happened before and I tried deleting the apps and re-installing them but it didn't help at all. I have the Canada-Wide 25 plan, with the Blackberry Social and Unlimited Messaging add-ons. Can anyone suggest why this would be happening or what I can do to fix it?