Exact model-family answer directory
Samsung Galaxy S24 family troubleshooting
Samsung Galaxy S24 family (SM-S928* (S24 Ultra), SM-S926* (S24+), SM-S921* (S24)): drain and heat after One UI 8 and 8.5; green line risk; the S Pen still has Bluetooth, and a fix for each symptom below.
- Drain and heat after One UI 8 and 8.5S24 Ultra owners report worse battery life after One UI 8 and again after 8.5, some seeing around four and a half hours of screen time from a full charge. Answers in Samsung's forums are to let the phone re-learn for up to 14 days, clear the cache partition from recovery and check Device Care.
Battery drainNot chargingOverheatingWi-FiNo serviceBluetooth
Samsung · battery drain
Samsung Galaxy S24 family battery drains too quickly
Open record Samsung · overheatingSamsung Galaxy S24 family gets hot or shows a temperature warning
Open record Samsung · touchscreenSamsung Galaxy S24 family screen or touch input is not working correctly
Open record Samsung · storage fullSamsung Galaxy S24 family storage is full or the device cannot install updates
Open record Samsung · not chargingSamsung Galaxy S24 family will not charge or charges slowly
Open record Samsung · Wi-FiSamsung Galaxy S24 family will not connect to Wi-Fi or keeps disconnecting
Open record Samsung · app crashingSamsung Galaxy S24 family app keeps crashing, freezing or will not open
Open record Samsung · biometric unlockSamsung Galaxy S24 family biometric unlock is not working
Open record Samsung · camera blurrySamsung Galaxy S24 family camera is blurry, shakes or will not focus
Open record Samsung · microphoneSamsung Galaxy S24 family microphone is quiet, muffled or not working
Open record Samsung · not syncingSamsung Galaxy S24 family photos, contacts, messages or account data will not sync
Open record Samsung · speakerSamsung Galaxy S24 family speaker is quiet, distorted or has no sound
Open record Samsung · BluetoothSamsung Galaxy S24 family will not pair or stay connected over Bluetooth
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Which units this covers, and how to tell yours is one of them
- Model numbers and patterns
- SM-S928* (S24 Ultra), SM-S926* (S24+), SM-S921* (S24)
Published specification
What is true of this model and changes how you fix it
- Green line riskThe green line is a display-connection fault that heat and major updates can trigger. Some owners think the S24 Ultra's panel is less prone than earlier Ultras, but it is not immune; a line that stays needs a screen repair.
- The S Pen still has BluetoothUnlike the S25 Ultra, the S24 Ultra's S Pen supports Air actions and the remote shutter, so a pen that will not trigger the camera is a fault to troubleshoot, starting with its charge.
Manufacturer support for this product line. Samsung Support — Mobile device support. Official Galaxy model manuals, diagnostics, updates and repair support.
Also read for this model. Samsung Members — Is One UI 8 going to generate a green line on the S24 Ultra.
Exact questions
Questions that only have an answer for the Samsung Galaxy S24 family
How long should battery drain last after a One UI update on an S24 Ultra?+
Samsung's forum answers put the re-learning period at up to 14 days. If it is still draining after that, reset battery stats, clear the cache partition and book a service check.