Straight talk iphone can't send iMessages or use data without Wi-Fi?

My mom and I recently upgraded phones, and her current phone is my old one, whenever I got my new one they took my SIM card and put it in my new phone, and her old phone didn't have a SIM, so the phone she got didn't per say have a SIM card to be put in, So without this SIM card she can't use her data on her iPhone or send iMessages without Wi-Fi. And the service people say it absolutely isn't because there isn't a SIM, so what is the problem? Could anyone please explain.

What's the chances of actually being able to get a iPhone on eBay for really cheap?

There are listings where the bidding starts at 99 cents. I just found one where nobody has bid on it yet, but it still has about 23 hours to go. What's the chances of getting an iPhone 5 super cheap like that from an eBay listing? As the time goes down will more people start to bid?

Added (1). If the seller has good reviews then does the chances of them trying to scam people go down? Or can a seller have fake reviews like you can buy followers on instagram?

How to get something transmitted to your iphone once engaged?

For example the house alarms in a common household, some have features to connect to your phone as a warning sign. How is this done, what kind of transmitter etc. Say if you had a lock system on a 2nd house in cornwall. Lots of distance with no Wi-Fi. Just battery.

How to have an iPhone ap made?

How to have an iPhone ap made? - 1

Added (1). I can't make an ap myself because it includes complex procedures regarding my needs and i'm very out of touch with technology

Underwater iPhone case for photos?

I'm looking to start taking underwater photos in the ocean with my iPhone 6. Only up to 15 meters or so. Does anyone have experience doing this? Looking for suggestions on relatively inexpensive cases/bags.
Not looking to spend $100, nor am I trying to ruin my phone.

Underwater iPhone case for picture?

Taking a trip to Kauai this summer and would like to take photos in the ocean. I'm not looking to spend $100 bucks though. Does anyone have experience with any inexpensive cases or bags for taking underwater photos? I'll only be free diving so 10 meters is deep enough.

Can I get a free iPhone 6 repair if the screen is faulty?

I just received a replacement iPhone 6 from my carrier and the screen has thin vertical lines running down the right side of the screen. I checked my serial number on Apple.com and it says "Repairs and Service Coverage: Active."
So my question is, will I have to pay for the repair. The phone has not been dropped. It is in perfect condition

How to Bypass ban iOS 9.3.1? Or higher?

So I got perma ban from a chat app called the lobby for no reason by the owner because I reported his app to Apple because he allows bullies and illegal stuff on it so he got offended and banned me I know I can still bypass by reset my iPhone but IIm not gonna keep doing that so how can I bypass ban to get into the app? I know tor browser on android worked last year on my android but IIm on iPhone 6s Plus and tor doesn't work on iPhone and IIm not gonna jail break my iPhone but am gonna get a iPod touch and jail break it. Is there any way I can bypass ban like fake my ip? I use ad blocker app it blocks ads saves my battery everything how can I bypass ban without jail break? Best answer please thanks.