TO BLOCK iPhone USING - IMEI-MEID

I want to block the use of iPhone 4s by using IMEI-MEID.

HOW CAN I DO THIS?

Your carrier might be able to do this

If I do this and iPhone 4s is returned ...

Can I unblock TO USE iPhone AGAIN.?

Same as above

CAN THE PERSON WHO HAS IT ... UNBLOCK the SIM TO USE THE iPhone?

No. If you have already informed your carrier

CAN THE PERSON WHO HAS IT ... UNBLOCK the IMEI TO USE THE iPhone?

Depends on the carrier.

You don't say where you are located & what carrier you're using. Not all carriers offer "Blacklisting", and there is no International Blacklist. In countries where carriers participate in Blacklisting, the phone will be unusable, as a phone, in that country. Thieves are smart, and in countries where carriers participate in Blacklisting, the phones are then shipped out of the country, for resale in countries where Blacklisting is not offered.

Not all carrier follows the rule especially overseas.

Then call your carrier and ask if they offer Blacklisting. If they do, request your phone be Blacklisted. Once done, it will be unusable, as a phone, in your country.

i am also have to know that how to block Iphone 4s totally because my mobile has been theft. tel me anyone how can i do?

so i had lost my iphone5 and my imei idk but im in canada i hope i can get it back its only 4 months old i lost it on a dead battery this suck so much i all ready had my imac stolen 6 months ago and it is still offline to this day 😟 i really hate loseing all my i devices

DEAR SIR

I HAVE LOST NY iPhone4 in travelling on 10th February 2015 it will not found until today so [lease block the imei no 0132680004362531

Did you read the whole thread?

Apple do not block, only your carrier does that.