Hi guys ,

I need help about factory unlock if you guys have gone through the situation. I am currently using iphone 4 which is not factory unlocked but unlocked through gevy sim card. I am using tmobile service.My sim card was cut to smaller size, which sits on top of the gevy sim card and is working fine, but since ios is outdated, applications crash at times. I cannot upgrade ios.I want to factory unlock it.so that I can download latest apps.

Here is my concern
1.Will my phone work without any problem after factory unlock still with the gevy simcard or do i have to get a new sim card?
Have you guys have had this issue?

Thanks in advance.

 Buy the factory unlock from ebay for a dollar and you won't be needing the gevey sim anymore.
Just pop in your T-mobile and it should work fine.
After the seller says that he unlocked the phone, you need to resintall your IOS and after the IOS update is complete, a message will says"Do you want to update your carrier setting" or something. Click yes and its unlocked for ever. 
The only bad part is that you will loose your jailbreak and get stuck with latest IOS for which jailbreaking is not available atm.

Thanks Devil,

I have CYDIA and this thing called furious mode. I think the furious mode works with gevy sim card. But my question is, my simcard was cut to smaller size and sits on top of gevy sim card.When factory unlocking, I have the following questions;

1)do i have to remove my sim card  while undergoing factory unlock?

2)Will I need new sim card as the current sim card was cut to smaller size and can I still use the sim card the way I am using now(i.e sim card was cut to smaller size and it sits on top of the gevy sim?

3)Do I have to remove the cydia or can just live it? I guess after factory unlock, it wont work.

I have been requested, or commanded , to send an iPhone to Nepal. What do I need to do to make sure that it works in Nepal? Will that 'eBay' solution work for now and forever? Appreciate the info. Thanks

Thanks pepsi for the info..