Can't find my iPhone 5c on iTunes 12.3.3 on Windows 7?

I plug in my phone, it charges but can't be discovered in iTunes In order to sync. I've tried finding the device in device manager and it's nowhere to be seen. I've recently upgraded my iTunes and Windows software from vista to 7 and 12.1.3 to 12.3.3 and this still doesn't work. Thought it could be the cable so I bought a new Apple official one and still no luck. Any ideas?

IPhone 6 not giving the option to trust my computer?

I need help, I spent an hour adding songs to my iTunes on my computer, and for some reason my iPhone is not showing up on my iTunes or computer. My computer sees that my iPhone is plugged in but it is not giving me the option to transfer the music to my phone whichever way I try. I have Windows 10 and I never had this problem until now. I got a new charger yesterday and tried my old chargers but IIm not sure what's going on. I restarted both my iPhone and computer, I tried to go into the Device Setting and Device Manager and nothing is working. IIm really frustrated. The only alert my phone is giving me when I plug it into the computer is Do I want to allow my computer to access pictures and videos. IIm really not sure why it's not giving me the option to trust my computer. Any help would be appreciated.

Added (1). I just tried on my desktop computer and I'm still not getting the option to trust the computer like on my laptop. Every thing I try it tells me the device is not found. I've used my past chargers and that still didn't work. The chargers work fine, I keep restarting, uninstalling, and reinstalling everything to make sure every thing is working but still no luck. I'm not sure if it's my phone at this point. I tried to call Apple Support but there's an extended wait time.

IPhone 6 kicks me off cellular network constantly?

My iPhone 6 is fully updated and I keep getting kicked off the cellular network. I will be in the middle of a call or looking something up (with full service) and will randomly get kicked off of the network. I tried resetting the phone to factory settings and rebooting but it still keeps happening… Has anyone had a similar problem? If so, how did you fix it?

How to get rid of other space on an iPhone?

I've had my iphone for a while. There are 4 gbs of "other" on my phone! I have no idea what it is, how can I get rid of it without deleting everything? And why is it so big?

Do you I sound spoiled? Or high maintenance?

I'm 14.
I own a iPhone 6s rose gold
MacBook Pro
Getting a car like Mercedes Benz when I'm 16
My own bathroom
$100 bedspread
And have a lot of clothes.
Am I "spoiled" or high maintenance?

Will getting the newest iPhone update delete all of my stuff?

So I have an iPhone 5S and I've been on IOS 7.1.2 and I really need to update it. I would sync it to my computer but it's dead and I've lost the charger. I've asked friends if it deleted their info before and they ve said no but IIm still hesitant.