Switching to google Fi as a heavy apple product user?

I found that project fi is way better for me and my uses and the fact it will save me lots of money.
But…
There's a catch, I have quiet a bit of apple products. I have an iphone 6s, 42mm apple watch, and 2 apple tvs. All of them are kinda codependent so it will be kinda lots of that money wasted. Mostly the iphone and apple watch will go to waste. I bought the apple watch a few months ago and the iPhone last year. I don't know if it will be worth switching concindering how heavily invested I'm in apple and the fact I will need a $500 nexus phone and I will probably end up spending $300 or more buying myself a smart watch cause I like it. Currently I'm spending $130 a month on tmobile one with one other person but I usually don't spend that much data outside of home so it will be arround $55 a month for me. Tell me is ot worth it or not

My iPhone home button glitches, how do I fix it?

So I have an IPhone 5. My home button doesn't work half the time anymore and my phone goes to home unexpectedly every now and then without me touching the button. It even opens the "open apps" tab sometimes too, which to open you would need to double tap the home button. How do I fix this?

If I order an iPhone on the Apple store

I just ordered an iPhone on the Apple store yesterday and for company I chose T-Mobile, I was wondering that when it comes, will the phone automatically be connected and on and able to make calls or not?

How can I fix no sound on my iPhone 6 when I record a video?

So i decided to record a video of a band I saw and once I replayed the video, the video didn't have sound all I could hear is a hissing noise and muffling. The thing is that when I recorded with Snapchat and IG I replayed them and there was sound. I tested my mic by using the voice Memo and it sounds great. Siri also works fine. The only problem is when I record with my camera and it's for both front and back camera. I've tried so many thing but I still can't get it to work like updating the software and resetting. Also cleaning the mics and taking of phone case. Please can someone help me because I'm gong to see BTS in two weeks and I really want to record them!

Will Verizon allow me switch out my iphone 7 for an iphone 7 plus?

I do not have an upgrade available, to my knowledge, but I would be willing to spend a couple hundred bucks in order to upgrade. There are probably many details that I'm not giving that would decide whether I would be able to do that, but in general, would Verizon allow that?

How do i make my phone have more battery?

I have an iphone se and the battery is normally 1-2 hours with mobile data on and 2-3 when its off. Its really impractical when you are out and about and no way to charge it.