My thumb hurts from using iPhone?

I use my iPhone 5s a lot, end over the last 4 months my right thumb has been slightly swollen and is in pain whenever I use it on my screen. Does anyone know what this is and how I can cure it?

IPhone 6 won't play music etc?

My iPhone 6 will not play any music, however it will ring for a phone call, but not for text messages. The music only works with headphones. Is there any other type of brush I can use to clean? I don't have any spare ones, and I'm not sure if I should use mine because it's been used i don't know.

How do tiny speakers play bass?

Years ago, people had to have MASSIVE speakers to hear bass. Tiny speakers used to sound terrible and high-pitched, but today, an iPhone speaker can play bass really well! What technology gets upgraded in a speaker, that improves its bass output without increasing the physical size? Ultra-thin smart TVs can even play sub-bass, and their speakers aren't very big. I thought that bass couldn't be produced if a speaker was too small. How does this work?

How to recover iPhone photos?

I haven't backed up my phone recently. I didn't want my dad being able to look through my photos so I asked him to remove my phone from his apple account. I made a new apple account and selected an email and security questions but when I got on my phone again all my photos were deleted. If I get my dad to re add me will it all come back?

Imessage crashes everytime i open it?

So i was texting my friend and right after i sent it i got a text from unknown number with a garble of text and i didn't open it and it crashed imessage. I'm pretty sure its kind of virus. I've tried ressetting the settings and clearing messages but nothings worked. I want to try and resolve this without resetting my iphone. A note, this isn't the effective power text that restarts iphones