Is iPhone or Android app development more profitable?

I'm thinking about learning some code and writing a very basic app/game for a mobile device. I have already learned some Java, and I was wondering whether developing an app for Android devices is profitable. Obviously, as a beginner programmer, I'm not looking for any kind of huge numbers, but I do want to make a few bucks. Along with the question of which one is more profitable, which one is easier to use?

Glue on my iphone 5 home button

How do i remove the sticker glue on my iphone home button? I placed a sticker on my iphone 5 home button about 3 months ago and when i tried to remove the sticker, the glue was left on my iphone 5. The glue was really sticky. The texture was almost like sticky rubber, tough and sticky. Any ideas? I managed to scrape some off with a knife

I can't get a ring on my iphone 4?

I just got an iphone 4, and I'm still learning about it. I can't seem to get it to ring when someone calls me, only vibrate. I set up a ring tone and everything. I have the volume on max, but that is only to hear someone. How do I get the iphone off silent vibrate so I can hear my ring tone?

Deleting Facebook app off iPhone?

I want to delete my fb app, I find I spend too much time on it on my phone and would rather just access my fb via computer.

When I go to delete my app, a note comes up saying "Deleting Facebook will also delete all of its data."

What does this mean? Will I lose all my mobile uploads? Again, I don't want to deactivate my account totally. I'd just like to remove the app.

Will my Verizon Iphone 4 Work in Toronto, Canada?

I have a new iphone 4S with Verizon I just got in August 2012, and the contract doesn't end for another year, however we're moving to Canada in about a week. Will the cost be the same if I use my iphone there, or is there a way I can trade it with an unblocked one, or not pay international fees?

Blocking my own phone number on iPhone?

I want to send a text to someone (it's a surprise text not a mean one) but I don't want them to know its me, how do I hide my own phone number so they can't see it's me when they receive the text? I have te iPhone 4s