Iphone 6 plus randomly shows apple logo, should I be concerned?

I have an iPhone 6 plus, and I have had it for a little over a week now, nothing has happened. It has been charging after getting down to five percent and it is now up to almost 40 percent. It randomly showed the apple logo as if it restarted but just seconds before showed a notification form facebook, should I be concerned or will it be okay and I need not to worry? I clicked the power button to lock the screen then unlock it and after a few seconds after unlocking it it went away.

IPhone won't restore. Error 4005?

My iPhone died yesterday. I didn't drop it or get it wet or anything, it just died for no reason.

I've been researching what to do, my screen is just black and doesn't connect to iTunes unless I hold the power button and home button simultaneously for 10 seconds and then release the power button.

When it connects to iTunes it prompts me that I need to restore my iPhone and then 'waits for iPhone' for a while and then tells me it can't be restored due to error 4005.

Itunes says i have way more photos than i really do?

Ok so on my iphone i had around 1500 pics, i just put a lot into iphoto & deleted them from my phone so now i only have 500ish on my phone, itunes says i have over 3000? Its really annoying because that makes it so there's almost no storage space on my phone. How do i fix this?

Cheap power bank for iPhone?

Need to buy a power bank for iPhone. Can you suggest some brands for power bank which are affordable and reliable?

How to remove a headphone jack stuck inside iPhone 5v?

A headphone jack is stuck inside the headphone port of my iPhone. But the thing is, I researched before and did the method of using Superglue to the tip of a cotton swab (Qtip) and stuck it inside the port. After a while, I pulled it out with force and now HALF of the cotton swab is stuck inside too. It's covering the whole headphone port and I don't know how to get it out! Will disassembling the back cover help or is there any other easier solution i could do?

Can I JailBreak iPhone 4 on iOS 7?

Hi. I've recently bought used iPhone 4 iOS 7.1.2, not jailbroken, but logged into iCloud (I can used it but it's logged by previous user). I wonder if I can JailBreak it now without updating it to iOS 8 (or iOS 6)? Is it possible, because some people told me it isn't on iOS 7.

Which case is better for a iphone?

I have a iPhone 4s and I can't decide what phone case that will will protect my phone from cracking. I have the Defender outterbox which I used all the time and it protects my phone really well and I also have commuter case and I only used it once I really like commuter outter case but I'm scared I'm going to crack my phone if I used that case. So I'm asking from Experience which phone case will be better?