What do i do to save battery?

IoT Modules LTE Standard Module
1

Hi, i use EG25-G on pinephone, my question is what AT command is convenient to save battery? I locked to one band only (B3) but i dont see emprouvement, hence is worth (seems to me), is there an AT command to lower frequency for modem to search GSM cells?

thank

2

…hence is worse (i miss written worse not worth)