Yes - if the phone is either already locked to the Orange network - OR - it's been unlocked to all networks.
no
Here's a how-to in putting in a SIM to a Samsung Galaxy S4 Mini...
NO
Both the Samsung Galaxy S5 and Galaxy S3 have micro-SIM cards. So, it should work.
The Samsung Galaxy S4 accepts a micro-SIM, but not a nano-SIM.
When you buy it, it doesn't come with a sim card, but there's a place to insert one on the side. :)
Galaxy S 4G phone - Earbuds -Manuel - new SIM Card
it does not have a sim card.
no
If you are with Sprint, there is no SIM card for the Samsung Conquer. Sprint does not use SIM cards.
There is no sim card on a Samsung Intercept since the Samsung Intercept is only available through Sprint.
"An orange sim means nothing, but an Orange SIM card is a pay as you go type of card. Orange is a mobile phone service company, and according to their website, a sim card is free."