Assuming you're asking what they are, how they work etc. Nothing is free... When you first buy a mobile - you pay a higher monthly charge to cover the cost of the handset. If you're at the end of your initial contract period, and happy to keep the phone you've already got, you can usually switch to a SIM only deal. This means you carry on with your current provider, but pay less monthly rental.
I'm with 3-mobile and had an initial 18-month contract, costing £12.00 a month. At the end of the contract period, I switched to a 12 month SIM only contract, which only costs me £4.00 per month !
You can find information about SIM only contracts online from the Sim Only Contracts UK website. Once on the site, you can compare providers and view deals.
The best SIM only deals are available online by going direct to the mobile phone companies. The best deals that are currently available are with EE but you should always do a comparison because companies frequently have special offers.
There a various types of SIM Only contracts with various lengths and cancellation periods. The most common one is a 30 day SIM Only contract. A 30 day SIM Only contract can be canceled with a 30 days notice. Further details can be found here http://www.simonlycontractdeals.co.uk/sim-only-deals.html. Scroll down to where it explains "30 day contract". Hope you find it useful.
Yes, usually. You can get "SIM Only" contracts which are usually better value for money, however you of course do not get a mobile phone every 18 months with a SIM Only contract. You can usually give 1 month's notice on a SIM Only contract to cancel it, without paying any cancellation fees.
It depends on the handset. With a SIM only contract, you're expected to use their SIM in an existing phone (rather than them supplying a brand-new one). Therefore, if (a) your handset is already 'locked' to the 3 network, or has been unlocked from its old network, then it should work perfectly well.
All sims are pay as you go unless purchased with a contract, the only way a sim won't work is if it's blocked.
No, the sim card is located in the top of the phone only.
As hindi has too many english words, sim is ccalled sim. some people also say it card!
Only the iPad Wifi + 3G Model needs a Sim.
No sim cards are only for numbers
no only you can proupse to them
Sim Only Deals or Phone is the basic source of freedom to the user regarding his decision about the handset brand and the type of the network operator. To Get Sim only deals UK visit - http://www.directphoneshop.co.UK/simonly.asp