Verizon wireless contract plan to start credit?

I'm 20 yrs old and trying to build credit. When I was 18 I got a credit card, basically maxed it out and then payed it off but let the balance sit for a while but less then three months or so. My credit score from Experian said I'm at no credit so I recently got got qualified for a plan with Verizon so I went ahead and got an iPhone. Going to be paying about $100 dollars a month for two years unless I pay off my phone sooner which will reduce my monthly deal to about $65. My question is, how effective is this? Main reason I did it was so boost my credit. If this isn't an ideal way to do so, what are some better ways?

How to erase/reset my iphone 6S when I got locked out and I don't know the password?

How to erase/reset my iphone 6S when I got locked out and I don't know the password?

Added (1). I have deleted the device from my icloud and find my iphone accounts. I have pressed the home and lock buttons to reset and have also held it to where the phone goes to the recovery setting, but every time I plug it in it gets halfway through updating and then the phone screen goes back to being disabled for 15 minutes and my itunes asks me to unlock my phone usinggm password to gain access. I have redone reset to the recovery screen over 5 times and their is no progress

How to transfer unpurchased music from iPhone to computer?

I have a lot of unpurchased music on my old iPhone that I don't have on my computer due to the fact that my computer with the files is long gone. I got a new iPhone today and I would like to know how to transfer these files from the old phone to the computer. I have Windows 7. I plugged the old phone into the computer and tried to access the files, and I selected the option to show hidden files and folders but nothing. Is there any way to do this without a third party program?

What does it mean to delete your iOS update?

IIm currently struggling to keep up a 16GB iPhone 6 storage. It's always telling me to manage my storage and how I can't update apps because of it. I go to Settings and Manage Storage and the IOS 9.3.1 is Third place when it comes to most used up. It gives me an option to delete this update, but what does this mean? Will be apps be deleted? Please let me know!

How much does a garage sale normally make?

I'm still trying to earn money for an iPhone 6, and I'm planning on selling some items there. How much money can I make if I sell clothes, a DSI, jewelry boxes, stuffed animals, and shoes?

Is there any good Wi-Fi hacking apps?

I used to always have android phones, and i always hacked the school Wi-Fi(to access instagram and snapchat) with HotspotShield… But now i have an iPhone and i can't seem to find a good app. Any ideas?