How can i use the sim card slot given behind my battery of dell studio 15 laptop? which type of sim card is supportable?

There is no SIM card slot, it is a memory card reader slot.

Get the driver to reinstall on Dell Support and click on Download software and drivers look for devices and you will find the software.

i would suggest calling technical support to see if the sim card you are using is even compatible with your laptop, you should not be having this problem if it is.

The sim card is located behind the battery. You should see it if you take the battery out, if you push it in it will slide out. Now, what is it for?

Are you sure it is the SIM slot you are looking at? There may also be a memory card reader, which would be much bigger than a SIM card.

If you remove the laptop's main battery pack, you should find another slot hidden in the battery bay, which will be the correct size for a standard SIM card.

Here's how you can install the SIM card...
1. Turn off your computer. 2. Remove the battery. 3. In the battery bay, slide the SIM card into the SIM card slot. 4. Replace the battery. 5. Turn on your computer

actually, I know the solution partially....
and i need that solution too.
Open your battery, then you will see a sim card slot (some metallic type).
Now you know about drivers then tell me name of driver...

You can get the support from Dell official web site here
http://support.dell.com/support/edocs/systems/1535/en/sm/minicard.htm
Good Luck, and do rate the solution if got help

That slot is an ExpressCard Slot for WWAN cards that require a sim card in order to connect to the provider's network. Not all WWAN cards require sim cards to connect. If you get an ExpressCard WWAN card, and that card requires a sim to connect, then usually there will be a place on the card itself to put the sim. The sim slot in the battery bay is because most mini-cards do not have room to add the required sim card slot and still fit into the system.

you need the DW5530, it will work with the sim card slot you have. I beleave it goes inside the pc into a mini-card slot ( mini pci express not into a usb port )

here you have a picture of it
http://cgi.ebay.co.uk/Dell%1A-Wireless-5530-Mobile-Broadband-HSDPA-Mini-Card_W0QQitemZ230318579931QQcmdZViewItemQQimsxZ20090110?IMSfp=TL090110114002r17902

Here is a cheaper one

http://cgi.ebay.co.uk/Dell-Wireless-5530-HSPA-Mini-Card--MOBILE-BROADBAND_W0QQitemZ260413286935QQcmdZViewItemQQimsxZ20090520?IMSfp=TL090520165004r8926

look around ebay, maybe theres a even cheaper one being sold.