tmobile
No.
When you have a phone unlocked it simply means that it will accept any sim card (any compatible sim card). So once its unlocked you dont have to worry about re-locking it. You can put your 3 sim card back in if you want, or an orange one or voda or keep the o2 one in. Its your choice.
Your phone will only do what it can where you are. If you have a phone that is capable of being used abroad it should work the same way it does in your home country. If you don't want your phone to ring while you are abroad you can either turn the phone fully off or if your phone has an "airplane" setting switching to that your phone won't beep or ring. You also won't be able to make outgoing calls. The question is really pretty vague.
Yes, my passport expired while I was abroad.
Travel insurance is the basic need if you are going abroad. Because you do not what will happen next with you. So for safer side you should insure yourself while travelling.
No, "no carrier" and "unlocked" do not mean the same thing for a cellphone. "No carrier" typically means the device is not currently associated with any specific mobile network provider, while "unlocked" refers to a phone that can be used with any carrier's SIM card, not restricted to the original provider. An unlocked phone can be used on any compatible network, whereas a device labeled as "no carrier" may still require unlocking to do so.
Nothing will happen if you have your phone recording while going through airport security x rays.
If the unlocked phone is an IDEN network phone then yes. If the unlocked phone is a GSM phone, meaning it was previously locked to a GSM carrier (i.e. AT&T, T Mobile) then it would not work on Boost Mobile as this carrier uses a different technology, which is not compatible with GSM based phones.
Yes you can.
Another word for abroad is overseas. A person can work or live abroad while his home is in the US somewhere.
Hi, it just mean... nothing! I can guess you have been facing such writing on shopping sites, especially on the ones dealing with auctions like eBay. Right? In fact, you should translate: unlocked (for use with any operator network) and no reserve (price). So you would get an unlocked phone while bidding under no reserve price conditions :) I have been also looking for an relevant explanation on dedicated forums for long. No one could shed some light on this "unlocked NR": unlocked with No Restrictions for any network? Unlocked with No Reserve for any network? So I asked to two eBay sellers, having offers including such "unlocked NR". Both replied the same: "unlocked to any network and no reserve price"! Cheers from France
Yes, an embassy can provide assistance and protection to its citizens who are in danger while traveling abroad.