My iphone 4s is blinking, how do i fix it?

My iphone 4s is blinking and i've never dropped it or anything, it died this morning and i charged it, when i tried to get on it it was at 5% battery and is blinking at the lock screen. It will not charge more than 5% and it will not turn off, how do i fix this?

IPhone 5s takes forever to load some websites. Slow Wi-Fi?

It really wasn't like this when I first got it. I don't really know if it is because I upgraded to iOS 8. But when I go to safari and visit a website, it takes at least 10 seconds for the website to show up. For google, it works fine, but for some other websites, it takes forever. It just takes long to load up pages. What's the problem?

Unlocking a Verizon iPhone 4S with sim card slot?

I bought an iPhone 4S off of Craigslist. I'm currently using a T-Mobile plan but the iphone is already using a verizon plan from the previous owner. The iPhone does have a sim card slot in the side so can i put in my t-mobile card slot?
How would I "unlock" it from verizon?
Any help is appreciated.

Backup restore an iPhone 5s?

I'm trying to downgrade to an older version of iOS. I recently updated to 8.1 and want to go back to any other 8 version. I was wondering if I backup restore would I go back to an older iOS verison.