hey! so i got an app called textplus and i traveled so i could call my friend and text her. my sim card stopped working and i used a wifi box that they gave me not my data. so will it charge on my bill? i tried to see if my roamimg data was off but since my sim is not working i coulnt check so i guess my roaming data was off while i was thre so my qustion is will i get charged for using textplus to call my friend and text her while i was in africa? thank you!