Hi, I have just bought a Samsung Galaxy Apollo and my global SIM card only works occasionally, less than 1% of the time. The SIM contract I have allows me to receive calls without getting roaming charges when I am in other countries. Way it works. e.g. 1. I connect to any network say Vodafone 2. Dial 121 for the voicemail, dial 3. It changes the number dialed and sends this down the line and disconnects the line. 4. I then receive a message saying do I want to connect to the call, select OK. 5. Accept the call. At the moment I get to 3. but I don't receive the connect message. I have transferred the SIM into a non-android phone and it works perfectly. The issue is that when I go into the mobile shop, after about 15 minutes of selecting lots of settings, it just clicks in and works. However, last time I went in they just couldn't get it to work. Any ideas would be most grateful.