My iPhone won't update my apps

Hello,

I had this exact same issue not long ago! Apple will not allow you to update apps or install an already owned app if you have a pending purchase with no payment method provided in your Apple ID. To fix this, you must update your payment method:

Change, Add, or Remove Apple ID Payment Methods - Apple Support

Sincerely,

Captain

If your payment method is declined in the App Store or iTunes Store - Apple Support