Iphone 4, 3GS & 3G owners might have noticed a faster battery drain or issue in getting Edge or 3G connection when ever you jailbreak and unlock your phone. Well, now there is a fix for this issue is available. Subscriber Artificial Module (SAM) officially activates your iPhone 3GS, 3G or iPhone 4 to fix the battery drain, over hotness & edge & 3G issues.
However in order to use SAM you must have jailbroken iPhone, also if you have Hactivated iPhone with PwnageTool or Redsn0w then you must revert to a stock lockdownd for SAM to function.
Install SAM & official activation on an iPhone without a stock SIM
Jailbroken iPhone 4, 3GS or 3G with Redsnow 0.9.6bg
STEP 2: Then install “SAM” and “SAMPrefs”.
STEP 4: Navigate to Settings > SAM and click “De-Activate iPhone”
STEP 5: Connect your iPhone to your PC then launch iTunes, allow iTunes to activate your iPhone officially. You will see this message “iPhone is activated”