Can’t call or text on my iPhone 7

I can’t call or text on my iPhone 7

when I try to call people it rings for a second then says call failed, when people call me I pick up then it says call failed

when I try to text people with iPhones it always says not delivered or failed,

but when I put my SIM card in my iPhone 5c everything works just fine

also when I record videos from the iphone 7 I can’t hear them after Recording them

The phone also takes like 5 minutes to load up and all this started out of know where