Affected contract customers to get 10 per cent off their July bill, with prepay customers receiving 10 per cent extra on their first top-up in September.
O2 has announced a 10 per cent reduction off mobile bills this month and an additional 10 per cent of top-up on prepay for all customers affected by last week’s network outage.
The reduction for contract customers will be applied to their September bill, with prepay users able to receive their extra top-up credit in the same month.
The operator is also giving all of its customers a £10 voucher to spend in any O2 store. This will be available via the Priority Moments app or online at www.o2.co.uk/priority between September 1 and 30.
The voucher will come with no minimum spend. One voucher can be used per transaction and no change given.
O2 will contact all consumer customers and small businesses with fewer than 10 connections with full details via text message by the end of the working day on July 27.