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Samsung Fail to Open Recovery_Cause? Do Not Reset for This Line Alone

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Your Samsung Recovery screen shows "fail to open recovery_cause (No such file or directory)" near the bottom, followed by lines such as "Reboot Recovery Cause is [UNKNOWN]" . If the Recovery menu is visible, Recovery Mode has already opened. This line does not by itself mean that the recovery partition, motherboard, or personal data has failed. The message says that Samsung's recovery environment could not read an expected record describing why the device entered Recovery. The decision changes with what happens next: a Galaxy that reboots into Android and works normally is different from one that keeps returning to Recovery or also shows mount and verification failures. Do not factory-reset a working phone merely to remove this diagnostic line. First read the other lines on the screen, choose Reboot system now if no destructive action is intended, and judge the phone by whether it boots, unlocks, reads files, and stays stable. Photo by Mark Chan o...
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Samsung Screen Problems Hub

Samsung screen problems can look similar from the outside, but the right next step depends on whether the phone is still on, whether touch works, and whether data is already backed up.

Choose the Screen Symptom That Matches Your Phone

SituationStart here
Screen is black but the phone rings or vibratesSamsung black screen but phone is on
Screen went black after a drop but phone still ringsScreen black after drop but phone rings
Display works but touch does not respondScreen works but touch not responding
Green line appears on the displaySamsung green line on screen
You need to understand repair valueSamsung screen repair cost
Screen turns on but touch does not workSamsung screen turns on but touch does not work
Screen taps, types, or scrolls by itselfSamsung ghost touch
Display repair is planned and local data must be protectedDoes Samsung screen repair erase data?
Screen is cracked and warranty or Samsung Care+ coverage is unclearDoes Samsung warranty cover a cracked screen?
Screen flashes, blinks, or pulses during useSamsung screen flickering checks

Data Comes Before Display Repair When Access Is Uncertain

If the phone still turns on but the display is unusable, decide whether your main goal is repair or data access. Screen repair may be worth it mainly because it lets you unlock the phone and back it up.

When to Stop Testing at Home

Stop repeated testing if the phone overheats, smells burnt, fails to charge, shows water damage signs, or contains data that is not backed up. A screen symptom can sometimes hide a power or board issue.

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Samsung Problem Hubs

Use these guides when the next question is about repair cost, data risk, charging, or screen symptoms.

Screen Problems Charging & Power Data Recovery Repair Cost