Some will - satellite phones notably do. For others, there are no base stations for them to connect with.
Only if the T-Mobile phone is unlocked. If the T-Mobile phone is still locked, only T-Mobile SIMs will work.
== == Depends on the phone's configuration.
An AT&T sim card will not work in an T-Mobile phone as it is locked to particular carrier itself... If you want to put your AT&T sim in your T-Mobile phone you can try unlocking your phone
It should work
Your Virgin Mobile phone won't work with Zong because it may require a short code. Virgin Mobile is best known for having prepaid cellular phones and does not work with different mobile payment websites.
NO!
Yes
3 mobile is a cellular phone service available in Europe.
The LG Voyager mobile phone is not available in the UK. LG Voyager mobile is a CDMA phone, which does not work outside the US.
yes it will work
No it wont you need to get the Verizon cell phone unlocked for the T-mobile chip to work. Look on the Internet as to how to do this.
Your mobile phone will pick up a network provider when you are in Ireland so your phone will work.