Is it possible to switch my iPhone 6s?

The company is TMoblie I currently have an iPhone 6s in the dark gray color but I was wondering if I could switch it for the rose gold color?
If it costs money about how much?

How to recover deleted videos from iphone?

I've deleted the same videos from my IPhone 6plus and IPhone 6SE and even from my recently deleted album. BUT IT IS IMPORTANT I GET THOSE VIDEOS BACK. Is this possible? If so, how?! Please and thank you for your help!

Switching verizon phone to cricket?

I'm on cricket wireless, and i recently broke my phone. I can't really afford a new one, so my friend offered to give me his old iphone 6s that was on verizon but he switched to sprint and got a new phone. I'm wondering if it is possible to put my cricket sim card in his old phone and it would work?

IPhone 6 only able to connect to 5g networks?

Okay so I got my 6 (used) around Christmas time. 1-2 months in and there were no connection problems. Around 2 weeks ago the signal began to dropoff from my family room, and slowly began to deteriorate as days went by. Now I can't connect to my main Wi-Fi network unless I'm like a foot away. I solved the problem by simply connecting to the 5g network, however the same problem applies anywhere else. I can't connect to any of my friends Wi-Fi since it is not 5g, and I was wondering if there's any solution to this.