I just bought a google play card for a friend but he has an iphone?

So i just recently bought a google play card for a friend but i just realized he has an iphone. I haven't used any money on it so i was wondering if i can return it or if i can buy an itunes card with the google play card. I tried emailing gamestop, the company i bought the card from, and they haven't responded even after 36 minutes. What should i do?

How do I sell my phone if it's not paid off?

The carrier of my phone line shut off my phone out of spite so I have this Iphone 7 plus 128 GB and I want to sell it now. Since it hasn't been fully paid off then it doesn't have a clean IMEI. I know the phone's worth is about $700 but what will the worth be if I jailbreak it? Any other ways I can make my phone sellable and get most of my money?

Can I backup to iCloud and iTunes?

I just bought an iPhone X. My previous phone was an iPhone 6 Plus, and the iPhone 4s before that. When I bought the iPhone 6 Plus, I backed up my iPhone 4s (16GB) to my Mac Pro, then connected my iPhone 6 Plus (64GB) and transferred all my info to that phone. Since then I used up all the storage on my 6 Plus without doing another backup, since I thought "I'll just wait until I get a new phone to backup and transfer". I was going to back up to my Mac and transfer all info into my iPhone X, but my Mac just stopped charging. I have about 900 songs and only 250 are purchased off iTunes Store. I know iCloud doesn't backup non purchased music. Also I don't know what else iCloud doesn't backup. So my question is, can I just pay the monthly fee once for the extra iCloud storage, just to backup my iPhone 6 Plus to iCloud now, restore my iPhone X from iCloud backup, and then when I get my Mac fixed, transfer the non purchased music and my photos to the X? I just need EVERYTHING from my iPhone 6 Plus to transfer over to my iPhone X. If you can help, thank you.

I have to be right next to my router for my iPhone 6 to work

So, I got a new iPhone 6 for Christmas but the Wi-Fi doesn't work unless I'm right beside the router. I've tried it in shops/mates houses and it's the luck of the draw I guess, sometimes it works, others it doesn't (as in, in some places) I've reset factory/network settings and Munich router TOO many times!
Can anyone help before I send the phone back to Apple?

Need apple mp3 will iphone do the samee?

Have a speaker system that will work with nano touch classic etc. When i look for refurbished mp3 is twice the price of an older iphone not needing phone part will that work

Easy way to change where my iphone backup will be stored?

I don't have enough space on my computer to back up a 64GB phone. Would like to rather back up to external hard drive. How can I do this? Please note I'm not great with computer stuff. Also, if i change the backup location will it make the process of restoring that backup complicated?