
To install SIM cards and a memory card into your SIGMA X-Style 31, follow these steps: First, open the back cover of the by gently prying it open from the designated spot. Next, insert your mini-SIM cards into the appropriate slots, making sure they are correctly oriented. If you're using a micro-SD card, insert it into its designated slot, ensuring proper alignment. After the SIM and memory cards are in place, insert the battery, ensuring the battery contacts align securely with the phone's contacts. Once everything is correctly inserted, close the back cover by aligning it and pressing it until it clicks firmly into place. Finally, power on the phone by long-pressing the power button (button 9, the red handset). It is recommended to fully charge the battery before your first use. For more detailed instructions or if you have any issues, please consult the SIGMA X-Style 31 user manual or contact an authorized service center.


