iphone se charging ic problem solution/iphone se 2020 0% remaining/Noor telecom скачать в хорошем качестве

iphone se charging ic problem solution/iphone se 2020 0% remaining/Noor telecom

iPhone SE (2020) shows “0% battery remaining” (or shuts off instantly even when plugged in). That’s a classic power / battery communication problem, and it can come from either the battery itself, the charging circuit, or the logic board’s PMIC/SMB control line. Let’s go through it step-by-step so you can identify the real cause 👇 ⚙️ 1. What “0% Remaining” Really Means When the iPhone shows 0% and doesn’t charge, it means: The phone detects the battery physically, But no voltage or communication data (SMBus / fuel gauge) is being read. The power system on the iPhone SE (2020) is managed by: U3300 (Charging IC / Tigris) U8100 (Power Management IC / PMIC) U7100 (Battery management / fuel gauge) If any of these are not communicating correctly → iOS displays 0% forever, even if power is present. 🔋 2. Quick Checks (Before Opening the Phone) Check What to Do Result 🔌 Try known-good charger & cable Use original Apple adapter If it charges → cable/adapter fault 🧠 Force restart Vol Up → Vol Down → Hold Power 10s Rules out software lock 🧾 Update iOS / Restore Sometimes fuel gauge data resets If fixed → software glitch 🪫 Use another battery Plug in known-good SE 2020 battery If charges → old battery fault If none help → it’s a hardware-level issue. 🧰 3. Battery Flex & Connector Checks Power off phone. Open device and disconnect the battery. Inspect battery connector (J4500) and battery flex cable for: Bent or missing pins Burn marks or corrosion Loose connector seating Clean with isopropyl alcohol and reconnect. If the issue remains → measure the battery voltage directly with a multimeter. A healthy battery should read 3.7–4.3V. If 0V → replace the battery. If 3.8V but iPhone still says 0% → SMBus data line fault.