Cannot receive sms from iphone6 to iphone4s but can on Ipad mini
I have an iphone 4s. I was getting sms from my friend’s phone till he recently bought an iphone 6. Now his messages are going to my IPad mini but not my iphone 4s. I can send messages to his iphone 6 from my iphone 4s but not receive them. Any advice on how to resolve this?
iPhone 4S, iOS 8.1.1