Chosen Solution
Suddenly in morning my all shopping apps , music apps etc stopped working they were showing there is no internet on mobile data while my whatsapp YouTube Facebook were working fine on mobile data . These stopped apps were only working on Wifi . I tried everything reset , restore backup but still same problem while my another iPhone 6s same network same area is working fine ? please help
Have you tried to update your apps? remove and reinstall?
go to the control center (swipe up from the bottom) to check your settings. You likely enabled airplane mode or disabled cellular and/or WiFi services.