1. anudeep2143's Avatar
    Hi users I am using Lumia 820 rm 824 at&t mobile!! As it is a 4g supported when I am using 3g network it's showing 4g symbol due to this my battery is draining quickly! I am using the mobile in India! So I want to change to India rom so that it has a mobile network select!! Plz help me out on this!!! Presently I am using preview developed version 8.1
    07-08-2014 10:07 PM
  2. RumoredNow's Avatar
    Dial ##3282# and go into the Field Test menu. Go to settings > network type > select 3G Only.

    ​No need to flash.
    07-08-2014 10:50 PM
  3. RumoredNow's Avatar
    If you want to flash (and erase all your data) there is much talk about it here:

    07-08-2014 10:53 PM
  4. pankaj981's Avatar
    4G for the ATT phones is HSPA+, LTE shows as L or LTE. So even though your phone shows as 4G it's still HSPA+. What you can do is try setting the highest speed to 2G if that's what you want? Secondly battery backup on the 8.1 preview is generally bad so your phone would be using more battery than on stock Black firmware.
    07-08-2014 10:54 PM
  5. anudeep2143's Avatar
    How to set the highest speed to 2G!! Field test is not working rite?
    07-09-2014 12:52 AM
  6. pankaj981's Avatar
    Settings >> cellular + SIM >> SIM settings >> set highest connection speed
    07-09-2014 04:22 AM

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