@Harriet22I would reach out to Samsung direct.
www.samsung.com/uk/supportIt might also be worth doing a full reset of the phone as well after backing up the device and starting afresh.
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iPhone 16 Pro Max - o2 and Spusu
Xperia 1V - Spusu
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This is not customer services and we dont have access to your account
I do not work for o2 or any VMo2 /Telefonica/Liberty Global Company