Kindle frozen is a common issue of kindle and it can occur any time. This issue can be troubleshoot by yourself by following these steps to restart the kindle. Most of the time this issue occurs due to low battery but it can’t be fixed by connecting it to the charging. First you need to switch off it and plug it with charger at least for 10 minutes. Now restart it and hopefully everything is fine. In case it doesn’t then you need to connect kindle toll free number.