CDMA vs GSM Screen replacement iphone 4

I ordered a gsm version on ebay and the fool sent me one marked cdma. Is there any difference? The cracked screen/digitizer looks identical to the one I got. I cannot find a 100% answer so I come to the experts, you guys!

The phone I got is from Telus....

TYIA

I am wondering if what I was sent is labeled wrong then. The mounts on the old screen are identical. I tried to find a side by side cdma and gsm picture but cannot. The cables look the same length and in same spot.

Intell said:

Read step 19: http://www.ifixit.com/Teardown/iPhone+4+Verizon+Teardown/4693/3

Click to expand...

Well then this is either labeled wrong or the Telus iphone I got is CDMA. Not sure if they released a CDMA version, I thought they were all GSM. If I lay the screen I got on to the casing it matches perfectly.

My concern now is if the motherboard reads the cdma and gsm screens differently.

Intell said:

See if it has a SIM slot. If it does, it's a GSM phone. If it doesn't it's a CDMA phone.

Click to expand...

yup its there.....

Intell said:

You have a GSM iPhone 4 then. Or you mistakenly have an iPhone 4S, but that is highly unlikely. Count the antenna breaks, three is an iPhone 4. Four breaks is an iPhone 4S.

Click to expand...

It is a 4, just based on model number