iphone 4s unlocking - how?

[iMore Question]

Hi, somebody advise me.

My uncle brought 4s -ios5.0.1, model A3187 from usa to india that was locked. It is out of its carrier contract and now want to use it in india after unlocking. I think carrier service is Verizon.

Should I upgrade it to ios-7 before unlocking?
Will Verizon provide unlocking service on request? if yes, mode of request & procedure..
Will jailbreaking provide unlocking solution?
who are the trusted IMEI unlocking service provides with low rates?

Thanks a lot.

 

[Just_Me_D]

The link below will direct you to Verizon's unlock policy:

Device Unlocking Policy | Verizon Wireless

I could be wrong, but I don't think upgrading the iOS version after having the phone unlocked by Verizon will have an effect on the unlock. Hopefully, someone who has experienced this can chime in.