Rooting a locked-bootloader device often breaks deep sleep cycles. You may need to install a "Deep Sleep Fix" APK. Is It Worth It? Rooting the G925A on 7.0 allows you to: Remove AT&T Bloatware. Use Titanium Backup for deep system snapshots. Modify system files for better audio (Viper4Android).
Ensure your PC recognizes the phone in Download Mode. The "Exclusive" Root Method: Engineering Kernels g925a root 70 exclusive
Engineering kernels are not optimized for daily use. They are meant for developers. To fix the lag, many users use apps like L-Speed or Kernel Auditor to tweak CPU governors after root is achieved. Rooting a locked-bootloader device often breaks deep sleep
Before attempting any "exclusive" root method, ensure you have the following: g925a root 70 exclusive
Download the latest version of Odin (v3.12 or higher) for your PC.