
Enable USB debugging mode from the settings. Backup your contacts, apps, messages, call logs, etc. But don’t worry if you want to regain it back just unroot the device. Rooting will void your device warranty. Do not implement this process on any other Samsung device. This guide is only for Samsung Galaxy S2 with the model number GT-I9100. If you brick your Galaxy S2 by implementing the steps given this article, whole responsibility will be yours. This rooting and TWRP flashing guide is intended for advanced users. In this guide, we’ll root and install TWRP v3.1.0-0 recovery on Galaxy S2 i9100. However, root Android phone and install TWRP recovery first. So you can easily flash those custom ROMs and enjoy the newly launched Android versions on your Galaxy S2 i9100. There are plenty of third-party custom ROMs developed by Android developers for this beautiful smartphone. But suffice to say, Galaxy S2 i9100 can easily handle any software you throw at it without a single discernible lag. After Jelly Bean, Samsung stopped releasing further updates for this smartphone. It was launched with Android 4.0.4 Ice Cream Sandwich OS which was further upgraded to Android 4.1 Jelly Bean OS by Samsung. Related: Install Lineage OS 15 ROM on Samsung Galaxy S2 i9100. It boasts a 1.2 GHz dual-core cortex-A9 processor with 1 GB of RAM and 32 GB of internal memory. Even today it remains as a phone that packs quite a punch when it comes to hardware.
The Samsung Galaxy S2 i9100 was the most used phone back in 2011.
Root and install TWRP recovery on Galaxy S2 i9100.