A:AnswerYes, it can be used outside the US, and can be used with SIM cards from diverse internet providers. You cannot however use the phone as a hot spot without some complicated authorization process.
A:AnswerI just did this. You can buy a sim card on the TracFone website in the BYOP section. They cost $1. I got free overnight shipping. Be sure of the right size card. My phone needed a nano sim but I was told to get micro. Also, you can sometimes find a sim kit at Walmart or Best Buy that offers all possible sim cards that work with TracFone for about $10. Activation is easy once you get the card.
A:AnswerIll be honest im using a galaxy s6 case for mine and it fits just that the led gets covered but you can drill a hole on the case and with some cases you got to remove the back cover for it to fit. I dont know about s4 it might cause its almost the same size
A:AnswerSamsung SM-J320A is the submodel of the Samsung J3. I Hope this helps you. You can find this information in the Settings and then click "about device" and it will show this exact information.
A:AnswerYes as long as the phone is unlocked it can be used with any carrier. However it's always best to check with your carrier first just to make sure.