What means NO SIM CARD INCLUDED on Galaxy S4?

[AC Question]

What means "NO SIM CARD INCLUDED" on Galaxy s4

I've never used ebay.
in detail Mobile says:
NEW CONDITION and OPEN NON -RETAIL BOX . NO SIM CARD INCLUDED , Verizon - LTE , AT & T - 3G, STRAIGHT TALK - LTE GSM UNLOCKED INCLUDED : USB CABLE , ADAPTER . [ WILL NOT WORK for T -Mobile or T -Mobile supported carriers . ]

1.What it means: NO SIM CARD INCLUDED , whether the cell phone work properly and whether the power of the internet use the menus ?

2.What it means: WILL NOT WORKING FOR T MOBILE, whether the phone will work in my country. (I am from Bosnia and Herzegovina)

 

[AlphaTango414]

Re: What means "NO SIM CARD INCLUDED" on Galaxy s4

Welcome. Sim cards are used to communicate with network towers. You have to get a Sim card from your service provider that enables voice and data connection.

 

[Maja M]

Re: What means "NO SIM CARD INCLUDED" on Galaxy s4

Does that mean you should just buy a sim card or something else ?
and can you tell me about the second question , if you know

 

[AlphaTango414]

Re: What means "NO SIM CARD INCLUDED" on Galaxy s4

Not 100% sure why they say it won't work on T Mobile networks. Maybe it's black listed with them. (Been reported lost or stolen)