iOS6 used to have the option to disable automatic connection to specific Wifi networks. This is gone in later versions of iOS yet is crucial in urban areas with abundant open web login networks in cafés etc. Has anyone figured out a hack, a third party app or so, to bring back this crucial feature?
(Somebody else has censored this post, removing crucial details needed to avoid flak resulting from misunderstanding / not knowing the 3G signal/wifi issues where I live; see history for them. Manually forgetting a network after each use, or constantly turning wifi on/off, are not solutions!!)