I want to use an old phone; HTC Desire Froyo 2.2 which does not have Google "Device Manager" installed because the app says incompatible with that device. I only want to use an app to track where the phone is; I thought this would be a cheap way to track my car if stolen; I will be leaving my car in an unknown, to me, UK area on public roads over several days. Leave the charged phone with GPS and location switched on. If car stolen ring phone to find its location. Any advice please?