Ever since I
unlocked my iPhone 4 using
GEVEY Sim, I was facing battery drainage problems and also the area around the
sim slot was getting over-heated. I thought my
battery drain was due to iOS problems or over-usage.
Today I was going through Yahoo! Answers and found this
question. I found the answer posted xbowlover interesting. Here’s what he says about the
difference in original and fake GEVEY Sims:
The main difference is they use different chips. The original one uses F981 chips. You can see the digital numbers on the gevey SIM (The black part). And the copy one uses F300 chips. The manufacturers usually wipe the numbers out, and you will not see any digital numbers on the black part.
Only original Gevey SIM comes with F981 as they have bought out this chip in the market, so others can only use F300. And the original Gevey SIM drains less battery and has better signal reception.
You may also want to read:
Difference Between Real & Fake GEVEY Pro SIMs This immediately struck me and I got a pin and removed the GEVEY Sim tray from my iPhone and found that there isn’t any number on the black part of
the IC chip. Also, I thought to do some Google research on F981 chips used in GEVEY. And I found a
Chinese site telling about the F981 & F300 chips.