If technology always works the way it's supposed to then it will be a peaceful world. Alas, the reality is contradictory. Maxis' system is not infallible, and we all had heard stories of people being charged roaming fee when they weren't supposed to. There are people who worked in Singapore who switch on their phones with data roaming off just so they can know if banks called them. Not necessarily answering these calls, but only knowing who called them through the missed calls. Yet these people became victims of unjust charges, and to make things worse they had to jump through hoops to revert these charges. Is that fair? Is this the right way to approach customers' problem?

The One World plan shouldn't be defaulted to auto-subscribed. It should be an option that customers can opt in if and only if they decide to use that service. Not every customers will spend time reading through the plan's online FAQ and T&C just so they can use the service. Fair enough they are supposed to, but how many of us who signed our phone plans have actually read the fine prints before we signed? Telcos shouldn't not activate or opt in a chargeable service without the consciousness approval of customers. That's the crux of the issue here. Because if they do, these charges become debatable and will results in complains and problems.

You are lucky you didn't get charged because somehow your phone didn't trigger any data because you off data roaming. But some android phones had data-trickling even after data roaming option set to OFF.

Who should be blamed? These telcos should be sympathetic to customers feedbacks and rectify them asap and at times please the customers out of goodwill if investigations revealed that the data was activated by accidents. They can do it, yet sometimes the telcos couldn't be bothered.