After 2+ years in Berlin, having lived in several Countries in Europe and N.America, my comments on mobile phone services, may be of interest to many unsuspecting expats. specially those who personally pay for therir cell phone services. As in many Coutries there is a proliferation of service providers with a maze of convoluted tariffs and miscellany of services. Navigating through this jungle of salesmanship and "incentive-offers" is a complex excercise of understanding not only the pricing structures but the technicallities of the offered services such as Mbps, G's, Hot-spots, conectivities, coverage , GPRS, EDGE, Mobilfunk, UMTS or HSDPA which can make a difference of up to 100% on the monthy cost of services .........or lack of them. Cell phones are an indispensible part of our lives, specially for those newly resettled, with a limited knowledge of German. A "smart-phone" has become a way of life, as has SMS messaging, email, info.searches, location, etc. Following a bike accident I have spent several weeks at a Berlin Hospital being reliant on my mobile-phone for contact with friends and family. So here speaks the voice of bitter and costly experiences of disinfornation, false claims and support inadequacies, With much time on my hands, I am pleased to share my experiences with those who have not fallen into the trap of false claims and sheer rip-offs. Of the three major carriers: T-Mobile, Vodafone and o2, there is a great deal of difference in rates, tehcnical capabilities and particularly support in English. The biggest pit-fall is 'T-Mobile', being part of the almighty Telecom, their services claims, lack of support response and tariff structure are a blatent rip-off. To get that 24 months contract, they offer new rates and incentives and there is a haggling competition as well as major difference in cost and service between their "shops", on-line and by phone. My experiences have led to cancelling of the 2 yr contract on legal advice. Vodafone tariffs and comparable, supplementary costs are lower, coverage is similar BUT but their back up and service is easily reachable and helpful, both by phone and in their stores. My best experience has been with o2 whose tariffs are much lower, internet capacity and connectivity consistently greater and phone service most prompt. There are some differences in reception coverage. There are several other "carriers' or subcontractors with differenct specializations particularly with some attractive international calling services, though as with all providers in this obviously highly profitable cell-phone market......BUYERS BEWARE !