Why did my iphones carrier change?

I'm with telstra, and now my phone says carrier as optus. My phone is locked to telstra but i thought it wasn't and ordered a tpg sim which i put in it. I can't call anyone but my carrier changed?

Screen on my iphone 4 went white, how can i fix it without restarting?

I have an iphone 4. I went to open an app and it went to open then just went white. My power button is broke so i can't restart it. The home button works, however it will not get me off the white screen. Is there anything else i can do besides restarting or letting the battery die to get back to the home screen?

How to improve tv reception? Don't say get cable?

Ever since the DTV change, I only get a few channels pretty reliably. First, it was mainly CBS, any other channels required constant antenna adjustment.
Then I moved and channell 65 (ION) also almost always works great. But sometimes passing traffic or windy weather seems to make reception go in and out whichever channell I'm watching. Always with airplanes, it goes out.
Sometimes it's late and I'm winding down for bed and the reception issues get me wound up again. I love to read, but that gets me more absorbed, not good for getting sleepy.
I have an iPhone because my previous phone, which I had for five years, got old and died. Outside of that, I don't own anything made in the last 15 years. Nor do I want to. I just miss tv being relaxing, requiring a remote and no physical activity.
I feel like I'm living in the old rabbit-ear days, when my brother wired a fork onto the antenna to help reception. Only instead of static, my shows have momentary total blackouts.
Cable tv sucks. When I watch cable in hotels, they have annoying ads for future shows running across the middle of the screen in the middle of shows, and commercial breaks seem longer and more frequent. I'm a one-thing-at-a-time type, and distractions bother me more than most people.

Why can't I watch live NBA games from my NBA Game Time App?

I have an iPhone 5 with Sprint which has teamed up with the NBA and i have the game time app. My friend is with Verizon and also has the app. When he opens up the app and clicks on a game he has the option to watch the game live. He doesn't have league pass or anything like that. But when I open up the app and click on a game it says its blacked out! I'm just wondering if anyone knows why this happens?

How to Prevent Sync-ing of IPhone and Ipad?

Hi! My cousin have an IPhone and uses my Apple ID same as my another cousin.
Here is my problem:
When I download apps in my cousin's IPad, The IPhone of my cousin also downloads it AUTOMATICALLY!

How to end this automatic download?

How to unlock iphone 4 for free?

How can i get my iphone 4 unlocked for free? D: I gotta pay $150.00 to carrier if i want to get it from them and am not allowed to.

Added (1). Without jailbreaking D

How to reduce the freezing on my iphone 4s?

My iphone 4s is starting to freeze a lot. Its annoying. Someone told me to go to my settings and delete something about the web but i forgot where he said to go within the settings. If you know what he was trying to tell me, let me know. Or if you know anything about this problem.