Went to Mallorca in October, landed 22nd and had 20GB data left. Checked emails on 23rd and receiv d a text saying all my data had been used.
I’ve had iPhone for years, regularly use abroad and data / iPhone savvy.
BT insist I have used the data, but I know i haven’t.
Usage over rest of holiday averaged 400mb per day, but charged for it due to BT claiming all my allowance had been used on first day.
Anyone had a similar issue?