Dell Inspiron 3737 Bluetooth problem?

As the title says, I have a Dell Inspiron 17 3737 Laptop. I'm currently running Windows 10 but have been having problems with the Bluetooth ever since I upgraded to Windows 8.1. I have a Bluetooth speaker that takes a very long to connect to my laptop (involves a lot of clicking and waiting). I also have a an iPhone 5s which won't connect at all. It will say it's connected on both my laptop and iPhone but when I click my laptop name under the iPhone Bluetooth, it will say pairing unsuccessful and that my laptop is not supported. When I had Windows 8, the Bluetooth worked flawlessly with everything I had connected. I tried downloading several Bluetooth drivers (the most up to date ones) but I was getting the same or similar results. I tried downloading one Bluetooth driver but it told me that I needed to turn on the "wireless Bluetooth switch" or something like that. I don't even know where that is. If anyone knows how to fix this problem or knows what specific type of drivers I need to install for my laptop, it would be greatly appreciated.

My iphone 4 is on ios 7.1.2 how do i update it?

My friend has an iphone 4 and she's on ios 8 something and i just updates mine to 7.1.2 there's no udates available for it right now but there should be anyone have any idea what to do because i can't ownload loads of apps

Added (1). *download and please give helpful answers

What to do when Iphone 5s keeps telling me to connect to Itunes?

Out of nowhere my phone turned off. It keep showing the low battery logo then the apple logo over and over again. So I left it alone last night. Today it keeps telling me to connect to Itunes. I restored the phone but nothing happened. What should I do?