billmonitor is a bill analysis engine for mobile phone users. It analyses post-pay customers’ online bills to find out exactly how they use their phone, then analyses all the contract deals in the market before matching them to exactly the right contract so they pay no more than they should. billmonitor was founded by mathematicians in Oxford, who saw an opportunity to put maths to use in solving complex consumer choice problems such as choosing mobile contracts. It is an independent and impartial service that helps mobile phone users save money not only via its unique bill analysis but also through the UK’s only Ofcom-accredited mobile comparison calculator.
The results in this report are based on statistical analysis of 28,417 anonymised bills from customers with mobile contracts on O2, Orange, Vodafone and T-Mobile covering usage over the last 18 months. The analysis was carried out by the billmonitor team together with billmonitor's science advisers, Professor Chris Holmes and Dr Nicolai Meinshausen (both from Oxford University).
The three main reasons why 76% of mobile subscribers are on the wrong contract wasting an average of £194.71 each per year
- 76% of UK post-pay customers are on the wrong contract, wasting on average £194.71 each per year
- 52% of those on the wrong contract are on a tariff that's too large for them, using on average just one quarter of their monthly calling allowance
- 29% of those on the wrong contract are on too small a tariff, wasting money on out of allowance calls, texts, data usage as well as other costs that could be reduced with a larger tariff
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