IPhone turns off after restarting?

I had to restart my iPhone and when i did, it showed the apple logo for a few
minutes, then turned off. Everytime i restart it the same thing happens, and when i connect it to my comptuter, it doesn't show up in iTunes. Anybody know why this happens, and how to fix it?

Why isn't my FedEx package moving/updating?

I ordered something offline and have been keeping check on it periodically. Everything was going good until it has gotten to my city itself. It even traveled (Or however you want to say/put it) even on Sunday. Suddenly as of today it did not move at all. It says it is in transit in my city but has not moved since then. Everything else took no time. Even coming thru the more populated, and bigger cities. Maybe I'm just too anxious. But sheesh. I thought it wasn't going to move on Sunday but it did but now it's just sitting still. It's an iPhone 6 and I just can't wait. I've been having low budget androids for years and not I'm finally getting an iPhone after wanting one for literally YEARS!

My iPhone 6s Plus have huge problem?

My iPhone 6s Plus has 11.3 gB I only have YouTube and what's app as my app I been deleting everything for couple hours and it's saying I have no space. I deleted my text my music my video i don't know what to do please help

My IPhone 5 isn't working right?

I've dropped it a few times… Oops… But its always worked after rebooting. I've rebooted it several times and now my iPhone has a bunch if problems that make it difficult to use.
1. My texts won't send most of the time or I have to hold down to send as a text instead of an I message randomly.
2. I get no notification on texts.
3. I've got absolutely zero room on my phone no matter how much junk I go an delete.
4. The contact names in my recents for texting is gone. But they're there in my contacts folder.

Is it possible to remove a virus from iPhone?

I don't know whether I have a virus on my iPhone, there haven't been any signs… However I'm paranoid because I used to be oblivious and go on lots of random websites to watch films/programs while in bed. But now I use my iPhone for online banking so I'm paranoid. Is it possible to check for a virus on my iPhone or it is impossible to know?

Thanks

Added (1). Also I don't want to infect my PC because I plug it in a lot to charge it.