How to change internet setting from t-mobile to orange?

i changed sim card and can't get on internet so must be something to do with settingsHow to change internet setting from t-mobile to orange?
Call customer services on orang 450 (pay and go) and 150 (contract)How to change internet setting from t-mobile to orange?
Dont hesitate to CALL Orange's Customer Case to ask their internet setting sent to your phone.Most provider can solve this issue by sending an automatic configuration setting via text message.