I can't install apps on my Apple iPhone Air iOS 26
Cause 3 of 4: Your Apple ID payment information is incorrect
The payment information used when buying apps is connected to your Apple ID. If the information is incorrect, it needs to be updated before you can buy apps.
Solution: Log on to App Store from a computer and update your payment information.
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*Annual Price Increase: During your minimum period, the monthly cost will increase each year on 1 April by £1.80 for Pay monthly plans with Airtime/Data, and £3 for Home Broadband plans. This doesn't affect Device Plans. More information: vodafone.co.uk/pricechanges