sarah1310 Said:
"I can’t download certain apps even though it said it’s free: I want to reinstall free apps like Grab or Wattpad but it requires password like I need to pay for it for billing. When I asked my friend to download it, they can but not me. How do I fix this?"
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At Least One Method of Payment:
In-App Purchases:
You need at least one method of payment assigned to your device. This is because even though an app may be free, in-app purchases are an option. Use this Link: Change, Add, or Remove Apple ID Payment Methods - Apple Support.
Important: Use a computer to add this, as it would be more user-friendly doing do.