Vodafone in the UK even suggested that a number of iOS 6.1-running iPhone 4S handsets in the same area could cause 3G congestion and affect non-iPhone users too. It pointed the finger of blame at Apple, and assured customers that the company is working on a fix for the 3G connectivity problems.
3 in Austria also warned iPhone 4S users to hold off the iOS 6.1 update last week.
The connection problems seem to occur intermittently, and yours truly can also admit to noticing infrequent losses of 3G signal on iOS 6.1.
According to the iFun report (via Ars), the update also addresses reported problems with decreased battery life since the iOS 6.1 update.
Corporate networks have also had problems with iOS 6.1, according to reports. It appears that iOS 6.1 devices are causing excessive logging on Exchange servers, prompting some administrators to block the devices.
Do you have problems with iOS 6.1??