No 3G after SIM card switch in foreign country

[basket440]

Hello everyone and thank you for reading my post! I recently got stationed over in Italy and have been using a less than optimal phone. I looked online how I could use my old phone and it seemed like all I had to do was switch the sim cards. So I did that and I can call, send txts and connect to WiFi fine however I can't get access to 3G. I also will note the 3G did work on the phone I purchased here. If I could be pointed in the right direction I would be very grateful!

 

[Hadron]

When you say "3G" I guess you mean you can't get data rather than that you can't connect to the 3G networks at all (3G can be used for voice as well). That would leave 2 possibilities: that your account does not support data roaming (carrier setting) or that the phone

 

[That Afro Guy]

99% of foreign countries outside the United States use the 2100mHz frequency band, for 3G, HSPA+ service.

Check if your phone supports this band.