If you're here looking up T-Mobile (UK) customer care, you probably already know who they are. But it helps to get an idea of how big they are and what their support operation looks like if you are a customer. T-Mobile (UK) also goes by or is associated with the names T-Mobile, T Mobile UK, TMobile UK. They are considered to be part of the following sectors and industries: telecommunications. They employ 86 people according to customers in the know.