Why won't my iPhone 5s hold a charge?

I know it's not my cable or the port that s screwed up, I plug my charger in and it shows the white screen with the apple logo. But that s all it does, it goes from black screen to white screen perpetually, until I take the charger out in which case it won't turn on at all. What could be wrong with my iPhone?

Is the iPhone 6s worth getting in 2017?

I'm planning on get my first iPhone soon w used iphone 6s or plus variant. Basically anything above the 6 is way to expensive. I basically use my current phone all day sometimes a whole class period which is around 45 minutes. I don't really play much games but I browse the web a alot. I also always carry a power bank on me if I need to charge my phone

How do I stop my phone from automatically switching to 4G?

I have the IPhone 6. Even when my Wi-Fi is working fine my phone randomly switches to 4G. I ll switch it back to Wi-Fi and within a minute it will switch back again. I have already switched off Wi-Fi assist and it hasn't fixed the problem. I even switched off 4G and now it just automatically goes to 3G and I'm not sure how to turn that off. Can someone please tell me how to stop it from switching or at least tell me how to switch off 3G as well as 4G all together. Even when my data runs out it still continues to switch. But when the data has run out it no longer works on my phone so nothing will load.

Why wasn't my iPhone going to the home screen?

Before someone says it's probably frozen, it isn't. I was on the third page and I'd try to swipe to either my second or even the home screen, and it would go there but then immediately slide all the way back to the third page. I'd press the home button and it would do the same thing.
I did manage to restart my phone and then it was fine after, but I'd still like answers because I'm concerned that my phone has been hacked. There's a situation going on with someone who is capable of doing something like this, and I've noticed my battery has been draining faster than it ever has.

If anyone has any idea what was going on, let me know please.

How to remove an iPhone from a hacked gmail account?

So, I have an Android, and my Snapchat got hacked via someone with an iPhone 7, and Snapchat gave me an IP, now my Gmail is getting hacked via an iPhone 7. I tried to remove the unwanted device and there's no option to remove it. Is there anyway to get rid of it?

How many Bluetooth devices can I connect?

Hi, I have an IPhone 6S+ and an EA connnected watch, and am thinking of buying AirPods. AirPods do not have an in-line remote, but my watch allows me to change the music volume playing on my phone.

Can I Connect my phone to my watch and AirPods at the same time, so that increasing the volume from my watch would result in my AirPods increasing volume?

No unhelpful answers please