Basically, you can take any cell phone you have or like that are tri-band. Also another important thing is to make sure that you sign-up for international service with your phone service provider/company; or else your tri-band cellphone will not work.
If that cell phone provider is using the European standard phone system. Most do not, but I believe T-Mobile does. You'll need to ask you cell phone provider.
No, you do not need any shots before travelling to Ireland.
No. There is a common travel agreement between Ireland and Britain. You will not need a passport at any time when travelling across the sea between Britain and Ireland. Neither do you need one when travelling in Ireland, from the south of the country to the North. There is no border on the island. There is open travel between the islands/countries of Ireland and Britain. Google 'Common Travel Area Britain Ireland' .
Not if they're travelling from Northern Ireland, but from anywhere else he/she does.
Yes, you need your passport.
You will need another AT&T cell phone are a compatible GSM cell phone.
If you are travelling from the USA to Northern Ireland, you need a passport to go there. You probably will also need a visa to enter Northern Ireland but you can find this out if you look up the British government website.
No, not unless you need a specific feature that is only in the latest phone.
You need cell phone service, if that's what you mean.
No, you don't need a cell phone number to receive email
i need pics of the frist cell phone
They NEED a cell phone