Why does my IPhone5s keep restarting over and over again? - 1

My IPhone just randomly started doing this today. I picked it up and all I saw was the black background with the white apple logo, then it shows my lock screen and in 3 sec. Goes back to the restarting screen. And it just keeps on doing that over and over again. I haven't been able to use my phone. I just got it 4 months ago and I don't know why its doing this. I have been dropping it a few times though which might have damaged it a little, but I don't think that would be the case. I was able to import all my photos so I didn't lose them which I was grateful for… But, its still keeps restarting. I use my phone a lot, and I have probably about 1 MG left in it. Please help me if you know what the problem is, thank you.

My cleaning lady threw out my sim card?

I had a tissue on my nightstand with a label that said "sim card do not throw out" with the sim card inside it and she threw it out? I was going to put it in my new iphone se when it comes out but now i have to get a new sim card?

Home and power button not responding on iPhone 6?

All of a sudden, the home button on my iPhone 6 stopped responding, so I figured turning it off would work. So I pressed the power button and turned the screen off. But when I went to turn the screen back on, pressing the home and power button didn't work. So I plugged it in and that still didn't light the screen up.
I've had this phone since September 2015. This is the first time this has happened.

Added (1). So now I can't turn my phone on at all. Anyone know what to do?

Can the iPhone 6s even display 4K?

Excuse my ignorance because I don't know a lot about my phone lol but can the 6s even play videos in 4K? It seems like it because it has the ability to record in 4K but the 1080p 60fps option uses less space and looks better. Is 4K supposed to be worse than that and I'm just all wrong or am I lacking the proper display to actually view 4K videos?

Iphone not charging properly? - 1

So recently my iphone charging cable wouldn't fit into the port properly. I looked online and said there could be dirt in the port. I brushed it, and the cable fit a bit better but still not properly. My iPhone was able to charge but only after spending 10 mins putting it into a specific position. Now my iPhone has died and I don't know what the position is to charge. What should I do?

IPhone keeps saying searching?

For the last 2 days my iPhone 5s has been saying 'searching' where I should be connected to my provider. I can't receive calls/texts or send calls/texts and I can't turn my data on. I have tried a hard reset a few times, I've taken the SIM card out and reinserted if, and I have also reset the network settings a few times, does anyone know how to fix this?

What's the difference between an iPhone 5, 5S and 5C? - 1

What's the difference between an iPhone 5, 5S and 5C? I'm looking to buy an iPhone 5, 5S or 5C? What's the difference and what one is better? And are the any other phones better than one of the iPhones? If this helps i'm looking to buy a phone on 02.