How to block the strange numbers?

I have an iPhone 5. Recently, I've been getting these calls from random numbers. When I answer, they just hang up. I've gotten like 7 calls just today. It's creeping me out and I want the calls to end. Is there a way to block calls like this?

IOS 7 apps crashing constantly on iPhone 4S

All the positives about my iPhone 4S have gone out the window ever since iOS 7 (and the later software updates), making all the non-Apple apps on my phone unusable and crashing 30 seconds after I load them. Disappointingly I'm in a 2-year contract that is only half way through, so there's no other phone I can get to save me from my situation. The only non-Apple apps that still work on my phone are Facebook, Instagram, Snapchat, and Chrome. All apps from enormous companies that have the spotlight on them constantly. The others? My games, other social media, videos, and other apps? GONE. They seem to be beyond saving for me. Their functions don't work, they freeze, they crash, and so much more.
And I can't take it anymore.
I've searched and searched for solutions, and all I've been able to find are to go in the settings (General>Accesibility) and turn on "Reduce Motion" and "Increase Contrast". Those helped… For a total of ten minutes. I've turned off clouding and automatic updates, and everything… But nothing seems to be helping!
What are some things I can do to save my phone so that I still can use it and actually like?

TV Remote control iphone app with no hardware coggle etc needed?

I want to turn my iPad into a remote, and all the apps I've found, you have to buy hardware for it. I was wondering if there's a free app that doesn't need I want to turn my iPad into a remote, and all the apps I've found, you have to buy hardware for it. I was wondering if there's a free app that doesn't need hardware even a hack

Nothing happens when i plug in my iphone to my macbook?

I have a brand new retina display macbook pro 13 in and every time i try to plug in my iphone nothing happens. I want to connect my phone to itunes and sync all my music but i can't and its pissing me off. I have two different iphone plugs that both work when charging my phone in an outlet but when i try to plug it into my computer.help me

Added (1). I've tried restarting my laptop several times and all the software on my computer is up to date. I have the latest version of itunes and i have os x mavericks. It was doing this before i updated the software

Iphone 5 not charging in laptop but does with wall outlet?

My charger doesn't work when I plug it into my laptop or my portable charger but it charges when it is in the wall outlet. Nothing shows up on my phone when I charge it with my laptop. It stopped working yesterday, what is wrong with it? My usb port does work because my friend charged her phone using my laptop but using her own cord. If I go into apple, will they exchange it for me or do I have to buy a new one?

How to flip the orientation on my Iphone 4 upside down?

I recently dropped my phone and now most of the bottom half of my screen will not work. The top half is still functioning perfectly so I was wondering if there was a way to flip everything upside down so that I can still write my text messages. Can I make this change through settings or is there an app available?

Is there anyway to get into an iPhone 4 without a sim card?

My friend gave me her iPhone 4 and I restarted it. Now i'm stuck on the starting menu. I just want to use the iphone as an ipod but it won't continue without a sim card. I've tried with other sim cards and my mom's iphone's sim card but that still didn't work. Would jail breaking help?