Mobile phone payment method

See the following Apple articles:

Change, add or remove Apple ID payment methods

Change, add or remove Apple ID payment methods – Apple Support (UK)

Add money to your Apple ID balance

Add money to your Apple ID balance – Apple Support (UK)

Payment methods you can use with your Apple ID

Payment methods you can use with your Apple ID – Apple Support (UK)

See this Apple article: Availability of mobile phone billing as an Apple ID payment method

Availability of mobile phone billing as an Apple ID payment method - Apple Support (MD)

I cant update my apps and cannot pay my bill

by mobile number