iOS 11 will be hitting distribution channels tomorrow. Hurray! Apple’s new operating system brings with it a number of updates, upgrades and new functionalities, but… well, but. As well as the new iOS is (reportedly) doing on new hardware, it does not do well at iPhone’s older devices. If you are using one of the iPhone devices listed below, reconsider updating to iOS 11 – otherwise you may have to face various compability issues. Older iPhone’s stuff just does not have the memory and processing power large enough to put up with iOS11’s demands.

– iPad mini 2, iPad mini 3, iPad Air,
– iPhone 5s, iPhone 6,
– basically every Apple device with A7 or A8 chip and 1GB memory.