How to log somebody off my twitter?

I own an iphone, and have the twitter app, my friend once let me log in on my twitter but on her phone so now she has the option to switch between her account and mine, i have changed my password but for some reason the app still isn't stopping her log on to it, i was just wondering if there's a way around this

I think i have a virus on my iphone?

I think i have a virus on my iphone? There's always something at the top of my screen. It says ( Debug Console No Errors ) but sometimes there are errors? I haven't got the money to pay for someone to look at it? I also no longer have alot of memory on my iphone? I really need it sorted what do i do!

How to free up more GB on iPhone 4s?

Recently I noticed my iPhone 4s is running low on memory. I did take more photos and videos. But I noticed something strange. My sister has a 16GB iPhone 4 and I have a 16GB iPhone 4s. She has 568 songs (3.5GB) and I have 366 songs (4.1GB). No songs of mine and hers are over 256 in bit rate. She has 366 photos (0.94GB) and I have 205 photos (4.2GB). Why is this?

How to Unblock a Unknown Caller?

Okay so I get prank called. Here n there no biggie. But I would like to know a free easy way to reveal the private number that calls me so I can call them and miss with them back.
Please it has to be FREE. I don't want to spend money on this. I have a IPhone 4s with Verizon if that helps any.

How much does it cost to upgrade on AT&T?

I bought an iPhone 4 back in Aug 2010. My contract was supposed to expire this month BUT someone stole my phone in April so I got the 4s and my contract was reset. In the event that the iPhone 5 drops, how much would it cost to break the contract and get the new iPhone?

IPhone syncing music that I don't want?

I have a select number of artists and playlists checked to sync with my iPhone.
HOWEVER.
It throws in all the music from a lot of random artists - such as the Red Hot Chili Peppers, the Beatles, and Brad Paisley - that I did not select to sync and that I do not have the space to hold. I delete the music from my iPhone every time I disconnect it, I have even resorted to removing the music from my iTunes library and putting it in a separate desktop folder… Somehow, it still insists on showing up every single time I charge my iPhone!

I don't know how to get rid of the music! It's taking up all the space on my phone (that I need for apps and other things) and I'm at a loss at how to fix this issue. I'm so irritated at this whole iSystem.

How to transfer music from my Iphone to my pc?

Ok so i'm an idiot. I know. But my phone got wet while babysitting and won't charge, it still will brighten up and say that it needs to be charged but it won't turn on anymore… I didn't set up icloud, and i haven't synced my phone to a computer since April… Is there anyway i could get my pictures, music, and contacts back from my computer? Like by using icloud (which i just set up on my pc) to pull all the info off my dead phone?

Iphone 4 went in the wash

My iphone 4 went through the wash and it was in there for a good hour or so. After my mom discovered it. She attempted turning it on. (might have short circuited it). Then we put it in rice for a few days and checked if it worked but i didn't. It will not turn on or charge. Any suggestions on how i could fix it or if it is even possible to fix it?