Although, several users have already upgraded their devices with either public beta update or developer's update yet a majority of users who can not afford the hassle related to beta update have been waiting for the final release.
Problems always arise in the first week or so and Apple, nearly always releases a fix within a few weeks. The update also features new multitasking features. However, if you still own the iPhone 4S, 5, or 5C you will not get the iOS 11 update anymore from Apple. If it is available, you will have to download and install the iOS update.
One-handed mode: If you are occupied with some work and have only one hand free then make use if this mode. If you're always running out of space, go to the general settings and look for the new iPhone Storage option. If you want to know more about what you can expect now that we are upon the release of iOS 11, read on to learn some cool features. The new option lets you rid yourself of the dreaded app rating request (or, as I like to call it, the beggar's box). And for those who don't, having the limit in place could be the default - which would protect them from unwanted data usage for things like automatic app updates, for example.
When Apple Pay Cash ships, the new Wallet and iMessage app feature will rely on Green Dot Bank for service. Your phone will detect when you're moving in a auto and disable notifications from popping up on your phone and send an automatic message that you're driving and you'll get back to them when you stop. When users get paid, they receive the money in their new Apple Pay Cash card in Apple Wallet and can use the money instantly. Obviously there is no way around this if you need the features active but, if you aren't connected to WiFi or Bluetooth, turn them off.