However, if you are throwing a custom, kernel ROM or radio / modem. You need more care to prevent anything bad happen to your device. It is always recommended to backup your current ROM custom recovery (Clockwork Mod or TWRP) in case something goes wrong. If you are using Samsung Galaxy S III or higher.
Make sure you have a backup of your EFS (a folder in which the serial number and other information regarding the radios on your phone IMEI phone is stored) without this folder, the phone is as good as an expensive toy. You can back up the folder using Root Explorer.
Many people wonder if they will get OTA (Over The Air) updates after your phone is rooted. This depends on the situation. If you root your phone and install a custom ROM on your phone. You will not get any OTA update. However, only have root access on the phone and you're still running the stock ROM. Most likely you will get the OTA update, but the update may end up breaking the root of your phone.
Rooting your Android device is not technically help you increase the speed or battery life of your
htc g2 root phone. To do that, you will need to either flash a custom kernel or custom ROM with a custom kernel support. Then you can download various applications tweaking the Google Play Store and adjust your phone. Some cores are grouped with their own applications tweaking to help users.
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