Selling an iphone with bad ESN on ebay?

Is it okay to sell a perfect conditioned iphone with a bad esn on ebay? What are the buyers options with the phone if they purchased it? Is it available to be jail broken or unlocked?

Can I use iphone 5c without SIM card?

So I'm going on a cruise soon and I need to take out my SIM card from my iphone so I don't use internet, because it will cost more to use internet out of the country. So i was wondering if I could still be able to take pictures with my phone without the SIM card in it. And if I put the SIM card back into my phone, will the pictures I took still be on there? And I also heard if you turn on airplane mode, your phone won't use internet… Could I do that in the cruise instead?

How to charge my iphone if the charging port is broken?

This mornings my brother broke the charging port on my iphone 4 I tried charging my phone with the charger and my docking station and it hasn't worked so I was wondering if there if any other way of charging my phone that doesn't include the charging port?

Iphone 4s charging issue

I've got an iPhone 4s, that is currently on charge, but something strange is now happening. Its flashing every second with its 'low level battery on red'. However, its apparently charging, since it has its lightning bolt above the charger symbol. Bare in mind my phone charger is charging off my macbook using its usb cable and the cable has to be in a specific position in order for it to work, although its 'working'.

I'm really lost on what's going on since i haven't been able to go on my phone for 2 days now.

Please help,

Many thanks Ellie.

Added (1). This is and update from my question earlier by the way

Added (2). My iPhone is now blank even when i try to press any button like the on button.

How much do I pay if I use over my data amount?

Hi, I have verizon on my iPhone 5c and I have 1024mg of data and I used 1090.91mg. How much extra do you think I will pay?

More details: I have unlimited talk and text and I pay $60/month

Why is my iPhone 5s searching with no SIM card inserted?

I brought the iphone from eBay. I'm with Vodafone got my number put on nano sim my phone worked fine for first 12 hours then (searching) came up in top left corner tried turning off and back on. After 3hours found signal but this problem keeps happing. Took back to Vodafone they have changed the sim but is still doing same thing. If I take the sim out then switch off and back on again it still says searching when it should say no sim? Witch makes me think it could be the phone? Please some one help thanks

My iphone won't take a charge?

I have to plug it into its dock, but the lifespan of the battery is always very short. I've tried hooking my iphone to its regular charger, my friends chargers, and the charger i have for my computer, but nothing is working. If you have any advice, it would be very helpful