unable to make any call outside my house

[AC Question]

I have been able to make a call in my flat to my land line, however when I'm outside/another town I'm not able to place any calls. Do I have to adjust the setting? I have dual sim Swees android. Would anybody know what I need to do please? Thank you

 

[B. Diddy]

Welcome to Android Central! Are you using 2 SIMs? Do both have a valid plan? Can you tell which SIM is being used to make the calls? Have you discussed the issue with your carrier?