CAT S31 is an old phone released in 2017. The phone is equipped with a snapdragon 210 chipset. The phone has a big 4000MAH battery and a small 4.7 inches screen. The phone has 16GB of internal storage and the option to extend storage by using an sd card is also available. If your phone is having a problem regarding software, like booting slow or lagging you can try to reinstall the firmware given below.

Firmware Details:

• Android Version: 8.1
• Build number: LTE_S0201121.0_S31_1.007.00
• Security patch: 2019-02-01
• Download Link: Click HERE
• Password=https://ministryofsolutions.com
• Note: Use Internet download manager for faster download speed