Default Blackjack settings from Cingular have the following problems:

  • Battery life is short because frequent sync drains too much battery
  • Dropped calls happen often due to network transition from 3G to Edge

In order to make your new Blackjack functional, you need to do the following:

  • Get an extended battery from Cingular store if you don't have one already
  • Turn off beaming if you don't need it
  • Turn down screen brightness
  • Change Sync interval to be 30 or 60 minutes.  Instant sync will drain your battery very fast
  • Force Edge/GSM, rather than 3G/WCDMA
  • Phone calls get dropped consistently as network transitions from 3G to Edge
    1.  * Enter *#1546792*# 
    2.  * Choose Network and Call settings
    3.  * Choose Network Mode
    4.  * Choose GSM and hit Done
    5.  * If you need a password, it is *#81230#

If your calls still get dropped, please visit Cingular store and get a new SIM card.