How to unlock a iphone for tmobile?

I need to know how to unlock my iphone 4s for verizon to tmobile. I have a tmobile sim card and my iphone is jailbroken. Please make a guide how to do this or give me a link to one.

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Only the original carrier or apple can unlock it.
I can for a small fee.
email me

I'm not sure if the Verizon iPhone is a world phone, meaning that it run on CDMA and GSM technology. The very first thing you need to check out is if there's a sim slot available, if there's then you are in luck.
Now, the phone is an iPhone 4s, which can still be unlock, only those models build from January 23 and on are not allow to unlock.
There are various way to unlock it, the first and most recommended is getting an unlock code from Verizon. This will factory unlock the iPhone and even if you update the IOS, you will still remain unlock.
The other one is buying the code, you can do it by purchasing an unlock code in one of so many web site that offer unlocking solution, I believe that the cheapest one for the iPhone 4s is $150.00
The other one is installing Ultrasnow from Cydia, but then again, in order for UltraSn0w to work, you need to have an iPad 2 GSM baseband and use it in the iPhone.
Once again, this only works on GSM model, and Verizon works CDMA.

Use R-sim card or factory unlocking.

You should buy unlock services to unlock your phone forever. Thes best price is from ebay.

http://rover.ebay.com/...=824&kw=lg

This is a service to Permanently Factory Unlock your Apple iPhone 3G 3GS 4 4S 5 - AT&T only. This Factory Unlock is a permanent unlock. You can update your iPhone iOS to the newest version and your iPhone will still be unlocked. It will never get locked again

Get the Verizon iPhone 4S factory unlocked and you can use T-Mobile SIM without any issues of locking back. Trim the SIM to micro-SIM, that's what iPhone 4S takes. You can mail this person (arghyle@rocketmail.com) who can help you get the phone factory unlocked.