Your mobile devices are likely to be a 'digital pacifier' in most households today because, frankly speaking, they keep kids occupied.and#160; It can be very effective in crowded restaurants or in any situation that keeping a restless child from turning disruptive is the goal. But giving a small child full-access to the entire contents of your smartphone is a pretty bad idea, so you need to learn how to 'childproof' devices before you hand them over.and#160; The Android and iPhone platforms have lots of built-in option available that will control user access but they need to be turned on, but so many people don't seem to be aware of how to do it.and#160; You can control what apps the child can use, limit Internet access, lock down purchasing options and block the famous 'in-app purchases' if you just take a few minutes to set things setup.and#160; They all have their own setup options and procedures, so if you need guidance, here's a good starting point: iPhone and Android:and#160;http://www.pcworld.com/article/2921718/2-easy-ways-to-child-proof-your-android-or-ios-device.html