Can I use both Wi-Fi and data plan on my iphone 4s t the same time?

I have activated my data plan and i'm also receiving Wi-Fi from home. When i turn the Wi-Fi on i can see the Wi-Fi bars. When i turn the Wi-Fi off i can see the E which means my data plan is on. I was wondering if i can turn my Wi-Fi on and also use my data plan at the same time on my iphone 4s?

Is it normal for iphone 5 to heat up?

Is it normal or okay for an iphone 5 to heat up? Like when i'm using a video recorder after a couple of minutes it started to heat up. Does my iphone have a problem? Sometimes it just heat up my i'm playing games on it or even when someone txted me and i haven't read it yet and the lights in my phone is still open and i've notice that something in my bag is hot (my iphone was insinde my bag secret pocket with my wallet) turns out it's my iphone. But when i'm in a cold area like with aircondition my phone cools down or even when i put it in front of an electric fan it cools down. It's like this new iphones is like an old cpu that needed an airconditioning room to not heat up while using it. So can anyone help me? Is not normal for an iphone to do this or should i get rid of this one and buy something else?

Is this optus internet fast enough for gaming?

https://www.optus.com.au/shop/broadband/naked/200-monthtomonth

This is the link, it is 200gb a month and 256kbps. I use it for gaming, streaming and downloading movies and games. I don't want high ping or lag when i'm playing games, we usually have 2 computers 3 iphones and an ipad connected at one time. Will i be lagging. I play games on computer like, "Garry's Mod, TF2 and xbox GTA5, COD" etc thanks

USPS package doesn't arrive?

USP problem. Hi I made a purchase from eBay on December 13 and was sent to my address in Maryland the same day but it's 20 and i'm not received my package, ebay providedme a tracking number they said the package was shipped on the 13th from Louisiana and came to Nort Carolina 15 but from there the package is not updated in the tracking number, the package is a iPhone 5s and the package is with 50$ of insurance, 2 day shipping. I don't understand why my package has not come yet to my address on Maryland, i talk to USPS and they said my package was actually late and I opened a case but say they don't know anything, really I don't know what to do if you expect more or talk with the seller to return my money.

Added (1). I order a screen protector and a case for the iPhone from another seller from California on December 15 and I received the items yesterday but not the other pack from luisisiana on December 13 had to receive the package in December 16 but nothing my package is on Charlotte NC

My iPhone 5s screen is uncalibrated?

My iPhone 5s has been working beautifully since I got it last month, but this morning I woke up, picked it up and noticed the screen was all uncalibrated and blurred with a greyish tint. Some parts of the screen work but I can't click on any app or scroll or anything like that without it being complete luck. Everything else is fine as far as I know, including the fingerprint scanner. I never dropped it yesterday, and it's never fallen more than 2 feet lightly. I also didn't set it in anything when I went to sleep. I'm wondering what could have caused this and how I could go about getting it fixed. Also note I can't shut it off and turn it on because the slide to power off button is on the screen and. Well, you know.

Thoughts on these gifts for my family?

I was thinking of getting my older siblings iPhone 5s, they are aged 23 to 16 and my younger siblings aged 7 to 4 Nintando Ds3 XL's well my middle sibling aged 9 iPod touch. But I don't know what to get my mum, step dad, youngerest sister aged 2 and neice aged 3, Thoughts help?
And what do you think of the gifts I haved picked for my other siblings? Are they to young for them or not?
I thought to get my step dad and mum new Laptops or a camera?

Added (1). my older siblings are not older then me, I should have stated that. I'm the oldest by far, my mum and step dad are poor and they have been nagging for this stuff.
I said older siblings as they are the oldest of the ones living at home.