iPhone Battery Health Issue and Best High‑Capacity Phones for Students

iPhone users may see the Battery Health status missing due to calibration problems. The issue can occur on new devices or after certain iOS updates. Apple recommends a forced restart—quickly press the volume‑up button, then volume‑down, and hold the side button until the Apple logo appears—to recalibrate the battery. After restarting, the Battery Health screen may display correctly.

For students seeking long‑lasting devices, several smartphones with 6,000‑7,000 mAh batteries are highlighted. The Tecno Pova 7 4G offers a 7,000 mAh battery, fast 45 W charging, and up to 8 GB RAM for around US$15‑20. The realme C100i also provides a 7,000 mAh battery with 256 GB storage and dust‑water protection. Redmi 15/15C models deliver 6‑7 kWh batteries at a low price point. OPPO A6c balances battery life with solid build quality, while Samsung Galaxy A07 5G adds 5G support and Knox security, though its battery capacity may be lower. Prices range from roughly US$8 to US$20, making these options affordable for daily study and media use.