Sim card i have the blackjack and my phone won't read my sim card nor realize the sim card is not in the phone.

I think your Samsung Blackjack is locked with some particular network.You need to unlock it to use other networks.To unlock you can approach Theunlockarena.com and specify the country,locked network.Based on the availability you can get the unlcok code along with free instructions.Once unlocked you can swap networks.

Have you used this SIM card in another phone?

Some cell phones have trouble reading SIM cards that have been used in other phones. (Example: The Samsung Jack may not be able to read a SIM card that has been used in a previous Samsung BlackJack model.) I run in to this problem almost daily with my customers.

Your HTC phone probably has the same problem. To correct it, you'll need to purchase a new SIM card (you can get one on eBay for the least amount of money) and contact your cellular provider. Tell them you have a defective SIM - that you purchased a new SIM card and you need your account switched to the new SIM card.

After you give them your new SIM card number, it will take about 15 seconds and the new SIM will be ready to use in your HTC TyTN.

That is not worth the headache. Purchase a replacement from eBay. I just checked and Blackjack 2 phones are selling for around $110.

If this helps please vote for my solution.

If he used it for the same carrier you are on (ie: sprint, AT&T, verizon, etc..) then it may just be a different format SIM card. Over my past 3 phones, I have had to change sim cards twice. Good thing is, usually the carrier doesn't charge for this. For example, if I took the sim out of my current LG g6, and tried to put it in my old galaxy note 3, it wouldn't work, I would have to get one of the older style SIM cards.
On the other hand, sometimes you won't be able to take a phone from one carrier to another, even if it is unlocked. It all depends on the cellular technology that the phone supports.
Hope this helps.

You can use this sim card only if the blackjuack was issued by Boost Mobile also or if The blackjack is an "unlocke" phone.

Is this phone from the same service provider as your simcard? If not, not all phones are unlocked to work with the sim cards of rival companies. If both the phone and sim card are from the sam company, then you can have the company replace your sim card. They usually do this for free as a courtesy as long as you explain the problem to them. Hope this helps

is the sim card fried once it is fried it is useless

you need to get an unlock code. If you are using a different sim that uses a different network to the one that the phone was made for then you need to get it unlocked to recognise your sim. If your network provider cannot provide you with a code there are plenty of phone repair shops that unlock phones very cheaply.

long process but the only way i found was to go to a contact open it then press menu and save to sim...sorry

Well, no. Your sim card must have taken a big jolt to it in order for it not to work. Simple, you need a new one. Got a Sams club near you? They should be able to give you one for free, att corporate stores charge 25.00. But sorry to say you need a new sim.

Clint Cartee
at&t wireless