Howw do i insert a sim card in a zte 9100o i insert a sim card in a zte 9100

SOURCE: Insert SIM Card

Put two layers of paper between SIM card and SIM holder to make it a tight hold.It solves your problem.

SOURCE: x sim card insertion with indian sim card insertion in i-phone

Some SIM cards because of their design have to be trimmed slightly in order to work with the turbo SIM. You can find a video on how to do this on youtube

SOURCE: ZTE sim locked

Hello, my name is Ismail A, and I will be helping you with your problem.
Ok, well because it is a different network and a whole new soft wear that has to be updated, it will not read the stauts of your sim. So try to find one that is the same company and network.

SOURCE: reliance zte tab sim network pin

your tab is network Blocked.

SOURCE: My phone is sim lock on zte n160 model. How to unlock and to use?

There can be many ways to Unlock your phone. As far as i know unlocking by codes is the simple and safe way. I will suggest the website Unlock-Zone.com which is doing good service and they were recommended highly in the cell phone forums.
I used them to unlock my cell phone. contacted them and within 30 mins i had my unlock code and my phone was unlocked.