Mazda 3 2013 Aux mode (ipod/iphone) NOT working?

Mazda 3 2013 Aux mode (ipod/iphone) NOT working? - 1

Added (1). I have a Mazda 3 2013 i-touring model. It's been great without any problem. Since this Monday, however, my Aux mode (ipod/iphone) doesn't seem to be working properly. I do hear music (very low) with LOUD buzzing noise. I don't think it's the audio system itself because FM/AM/Bluetooth work just fine. I even bought a new USB cable for the AUX input thinking my old cable went out. But it still gives me the same loud buzzing noise when I play music on AUX mode. Anyone ever had a similar problem?

How to hijack the numbers an LCD is transmitting? Preferably into an iOS device?

I want a way to take an engine compression gauge with a built in LCD display (like the one on a digital watch) and convert it into actual data such as a text input that I can have go into my pc and log the data at its highest point. To explain my actual goal, I want to hack up a rotary engine compression test. I'm tired of doing it manually and writing down each peak then watching my recording to calculate the time interval between peaks. A store-bought compression tester is $350+ and I could easily do the same thing if I could just hijack this signal and get it into my pc. Even better if I had a way to use it in an Xcode application. I'm not a real programmer but I make iPhone apps for myself pretty frequently, typically just simplified spreadsheets as standalone apps and I want to find a way to do this but I would need some hardware first. A digital compression tester is

Should I get a credit card for an iphone?

I currently have an iPhone 5 16gb. The phone screen is becoming slow to react, and every now and then the home button doesn't work or the phone freezes. I'm not an authorized user on the AT&T account (I'm on a family plan)so using an upgrade is out of the question. So I would have to get it from a 3 party (eBay, Amazon, GameStop, etc.) I was going to get an iPhone 5s 32gb, however I basically buying the same phone. So I was trying to get the iPhone 6. However I can't pay for the phone full price upfront ( I can pay $300 upfront) but the rest would have to be from a credit card. If I would get a credit card, it would have to be at least 6 months interest free. (I have a GameStop credit card, but I can only use it at GameStop)Should I get a credit for an iPhone? Or just get the iPhone 5s?

Iphone is cold and touchscreen not working?

So I woke up this morning and used my phone, but nothing is working. I can't slide the lock screen button or open any apps, all I can do is unlock my phone with the fingerprint scanner. I looked it up and apparently when the phone gets cold, the lcd screen doesn't work properly or something? I left my phone out on the table all night. How can I fix it?

Added (1). edit: I restarted my phone and it works now

My iPhone lock screen time messes up?

So I updated Cydia from the app, I did a respring and when I turned on the lock screen, the time is slightly lower than it should be. Screenshot > My iPhone lock screen time messes up
Can someone please help me to fix it?