Can I share a data plan on at&t?

My mom and my sister both have a plan on at&t. My mom has some kind of gophone with a touchscreen and my sister has iphone 4s. I just got a samsung galaxy exhilarate and was wondering if I could share the data plan with my sister or if I need my own individual plan. I will not need the data because I use Wi-Fi and only need the phone for texting. Is there any possible way to have the smartphone on a data and text plan only?

Iphone 5c won't stop ringing/vibrating?

For some reason my Iphone keeps vibrating or ringing every few mins or so and that is getting really annoying. I've looked at this on several different websites and tried to fix the problem like disabling vibrating in messaging and other apps but still it keeps doing it. Does anyone know any other way to fix the problem?

Added (1). I do not know what the fake phone call feature thing is.

How long should it take for a hp 7 tablet to charge?

So like my tablet is taking a long time to like charge and like yeah man its just taking to long like you know how a iPhone taking like rick ros to charge like yeah man and I just want it to charge man like yeah this thing was 135 $ and want IT THAT Way like man

Am I an ungrateful daughter, on Christmas?

My mom hasn't really gotten me anything for the past 3 years on Christmas & also has called me a dog on my Birthday & for no reason returned the things I got on Black Friday & also my birthday present. She keeps telling me i'm ungrateful & rude & mean to her, but i'm trying to be truthful. Every time I say something to 'stand up for myself' she always thinks i'm being ungrateful & rude. She has called me many many many names & she is also the reason why I'm in such disgust with myself & am so down & negative about myself because, all she does is treat me badly. In all honesty, I don't ask for much. I don't even have cell phone service & i'm 14 soon going to be 15! Everyone I know insults me for not having it, so for quite a long time i've been asking my mom for it & all she tells me is that it's unneeded & she can't 'afford' it. When in reality, she get's 2K per month from her job & her cell phone bill is only 47$. She handed me down a broken IPhone 4 & i'm okay with using it, but she keeps saying it's unndeed when we have Wi-Fi in the house. But, I keep telling her that if in a case, I need to call someone in an emergency that isn't so urgent to call the police I have nothing!
Also, another thing that bothers me is that I gave my mom a necklace last christmas with a perfume that costed 65$ last year & this year she re-gifted the necklace & gave it back to me. It makes me so mad, that she didn't put any effort like I did when I gave her a present.
I feel that i'm very very thankful & very grateful for what I have, but when it comes to actually needing something or maybe having something nice for once.
I don't have much clothes either, all I have is 2 pairs of jeans & I only wear sweatshirts & I have one pair of shoes that I wear on a daily basis.
What do I do, am I ungrateful, am I a bad person for knowing what I need?
I'm only 14 & I feel really terrible. On Christmas Day.
She also actually got something for our cat, rather than me as her own child.

Added (1). I can't go to my dad's either

Added (2). Also, my mom has told me that she needs to appreciate me more, but she hasn't done anything.

Portable iPhone battery charging case doesn't work?

My friend recently got me a 1900mAh lithium polymer charging phone case but it doesn't work! I can always charge my phone with my regular charger with no problems but the case doesn't work. My sister also has an iPhone 4S, and it works perfectly fine for her phone, but why not mine?

How to activate my new iPhone 4?

So my best friend gottm the iPhone 4 for Christmas and I was really excited but now I'm not sure if I can even use it. My phone carrier is Straight Talk and will stay Straight Talk. I don't plan on changing. The problem is, the iPhone he got me is from Verizon. I know that Straight Talk has iPhones, but to use them and activate them through Straight Talk, you have to either buy them on their website or at Walmart through their carrier plan. I'm not sure whether to tell it is an unlocked iPhone (meaning you can put any sim card in from any carrier and have it work) so if it's not unlocked, does that mean it's useless? I would hate to have that much money go down the drain because he spent a lot of money and I'm so grateful for my best friend.
What do I do?

Can Apple get all my photos etc back even when I haven't done a recent backup?

I stupidly restored my iPhone by accident and I used the backup on my laptop which I Iast did in November 2012 and I didn't realise it was so long ago. I've had trouble backing up my iPhone with iCloud and so my last backup was in October 2013. I have done lots of things since then like written important notes. Is it still possible that Apple can get it all back even though I haven't backed it up for ages? For example they have all the data of every phone stored somewhere? This might sound stupid but it's worth asking because I'm really worried and annoyed thanks.

Faulty iPhone 5? Will they replace it?

I've had an iPhone 5 for 5 months and taken really good care of it, I've never dropped it or jailbroken it or anything, it's in perfect condition on the outside. But if you gently shake it there's something rattling inside it and it's not the camera lense. I don't think it's a loose battery either. Also, it overheats easily after not much use. Today it made a record, I charged it for about 5 minutes and already it got pretty warm and it's in a lifeproof case so that's pretty bad. It's just been acting up in different ways, do you think apple or the verizon store I brought it from will replace it?