Battery Life
The phone is powered by a removable Li-Ion 650 mAh battery, a typical power source for phones around that period. This battery provides a standby time ranging between 60 to 220 hours and a talk time between 100 to 360 minutes. The battery performance ensures that the Siemens S35i remains functional over extended periods without the need for frequent charging, an essential factor in an era when mobile phones served primarily to make calls and send texts.