Manufacturer and model directory

Samsung mobile model troubleshooting

Choose the complete Samsung model family before opening a fix. Model patterns are shown on every page, and unsupported code meanings are not copied between platforms.

Exact modelObserved symptomFirst safe testVerificationStop condition

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594 complete records in this directory

Reviewed records

594 exact answers

Showing 60 representative records. Choose a platform or manufacturer above to see its complete set.

Not sure where the fault is?

Samsung · app crashing

Samsung Galaxy A25 5G app keeps crashing, freezing or will not open

Samsung Galaxy A25 5G app keeps crashing, freezing or will not open: one app versus the operating system, storage and service state determines the safe sequence. Scoped to SM-A256*, with the model boundary and safe stop points made explicit.

Open record Samsung · battery drain

Samsung Galaxy A25 5G battery drains too quickly

Samsung Galaxy A25 5G battery drains too quickly: recent update/indexing, screen/radio use, background activity, signal and battery condition should be measured before replacement. Scoped to SM-A256*, with the model boundary and safe stop points made explicit.

Open record Samsung · biometric unlock

Samsung Galaxy A25 5G biometric unlock is not working

Samsung Galaxy A25 5G biometric unlock is not working: sensor obstruction, enrolled appearance/finger, protector, environment and hardware should be separated. Scoped to SM-A256*, with the model boundary and safe stop points made explicit.

Open record Samsung · camera blurry

Samsung Galaxy A25 5G camera is blurry, shakes or will not focus

Samsung Galaxy A25 5G camera is blurry, shakes or will not focus: lens contamination, case magnets, one app/lens and camera hardware should be separated. Scoped to SM-A256*, with the model boundary and safe stop points made explicit.

Open record Samsung · calls

Samsung Galaxy A25 5G cannot make calls or send messages

Samsung Galaxy A25 5G cannot make calls or send messages: carrier service, selected line, account activation, recipient-specific block and messaging service should be separated. Scoped to SM-A256*, with the model boundary and safe stop points made explicit.

Open record Samsung · overheating

Samsung Galaxy A25 5G gets hot or shows a temperature warning

Samsung Galaxy A25 5G gets hot or shows a temperature warning: high workload, charging, signal search, environment and a failing battery must be separated. Scoped to SM-A256*, with the model boundary and safe stop points made explicit.

Open record Samsung · GPS

Samsung Galaxy A25 5G GPS or location is inaccurate

Samsung Galaxy A25 5G GPS or location is inaccurate: app permission, precise-location setting, outdoor satellite view, network assistance and sensor calibration should be separated. Scoped to SM-A256*, with the model boundary and safe stop points made explicit.

Open record Samsung · no service

Samsung Galaxy A25 5G has no cellular service or data

Samsung Galaxy A25 5G has no cellular service or data: carrier outage/account/provisioning, SIM/eSIM, coverage, line selection and device radio should be separated. Scoped to SM-A256*, with the model boundary and safe stop points made explicit.

Open record Samsung · microphone

Samsung Galaxy A25 5G microphone is quiet, muffled or not working

Samsung Galaxy A25 5G microphone is quiet, muffled or not working: different apps and call modes use different microphones. Scoped to SM-A256*, with the model boundary and safe stop points made explicit.

Open record Samsung · notifications

Samsung Galaxy A25 5G notifications are delayed or missing

Samsung Galaxy A25 5G notifications are delayed or missing: app permission, channel/category, Focus modes, background restriction, account sync and network should be separated. Scoped to SM-A256*, with the model boundary and safe stop points made explicit.

Open record Samsung · not syncing

Samsung Galaxy A25 5G photos, contacts, messages or account data will not sync

Samsung Galaxy A25 5G photos, contacts, messages or account data will not sync: account status, cloud capacity, network, permissions and local storage should be separated before sign-out. Scoped to SM-A256*, with the model boundary and safe stop points made explicit.

Open record Samsung · touchscreen

Samsung Galaxy A25 5G screen or touch input is not working correctly

Samsung Galaxy A25 5G screen or touch input is not working correctly: one app/region, moisture, protector/case, charger interference and display hardware should be separated. Scoped to SM-A256*, with the model boundary and safe stop points made explicit.

Open record Samsung · update failed

Samsung Galaxy A25 5G software update will not download or install

Samsung Galaxy A25 5G software update will not download or install: eligibility, power, storage, network, date/time and update service should be checked before recovery. Scoped to SM-A256*, with the model boundary and safe stop points made explicit.

Open record Samsung · speaker

Samsung Galaxy A25 5G speaker is quiet, distorted or has no sound

Samsung Galaxy A25 5G speaker is quiet, distorted or has no sound: earpiece, loudspeaker, Bluetooth routing, app audio and obstruction should be separated. Scoped to SM-A256*, with the model boundary and safe stop points made explicit.

Open record Samsung · storage full

Samsung Galaxy A25 5G storage is full or the device cannot install updates

Samsung Galaxy A25 5G storage is full or the device cannot install updates: large media, downloads, app caches and system-update reserve should be measured before deletion. Scoped to SM-A256*, with the model boundary and safe stop points made explicit.

Open record Samsung · not charging

Samsung Galaxy A25 5G will not charge or charges slowly

Samsung Galaxy A25 5G will not charge or charges slowly: power source, cable/adapter, port debris/liquid, temperature and battery protection should be separated. Scoped to SM-A256*, with the model boundary and safe stop points made explicit.

Open record Samsung · Wi-Fi

Samsung Galaxy A25 5G will not connect to Wi-Fi or keeps disconnecting

Samsung Galaxy A25 5G will not connect to Wi-Fi or keeps disconnecting: one network, all networks, VPN/profile and radio hardware produce different fixes. Scoped to SM-A256*, with the model boundary and safe stop points made explicit.

Open record Samsung · Bluetooth

Samsung Galaxy A25 5G will not pair or stay connected over Bluetooth

Samsung Galaxy A25 5G will not pair or stay connected over Bluetooth: accessory pairing state, competing hosts, profile support and radio issues should be isolated. Scoped to SM-A256*, with the model boundary and safe stop points made explicit.

Open record Samsung · app crashing

Samsung Galaxy A35 5G app keeps crashing, freezing or will not open

Samsung Galaxy A35 5G app keeps crashing, freezing or will not open: one app versus the operating system, storage and service state determines the safe sequence. Scoped to SM-A356*, with the model boundary and safe stop points made explicit.

Open record Samsung · battery drain

Samsung Galaxy A35 5G battery drains too quickly

Samsung Galaxy A35 5G battery drains too quickly: recent update/indexing, screen/radio use, background activity, signal and battery condition should be measured before replacement. Scoped to SM-A356*, with the model boundary and safe stop points made explicit.

Open record Samsung · biometric unlock

Samsung Galaxy A35 5G biometric unlock is not working

Samsung Galaxy A35 5G biometric unlock is not working: sensor obstruction, enrolled appearance/finger, protector, environment and hardware should be separated. Scoped to SM-A356*, with the model boundary and safe stop points made explicit.

Open record Samsung · camera blurry

Samsung Galaxy A35 5G camera is blurry, shakes or will not focus

Samsung Galaxy A35 5G camera is blurry, shakes or will not focus: lens contamination, case magnets, one app/lens and camera hardware should be separated. Scoped to SM-A356*, with the model boundary and safe stop points made explicit.

Open record Samsung · calls

Samsung Galaxy A35 5G cannot make calls or send messages

Samsung Galaxy A35 5G cannot make calls or send messages: carrier service, selected line, account activation, recipient-specific block and messaging service should be separated. Scoped to SM-A356*, with the model boundary and safe stop points made explicit.

Open record Samsung · overheating

Samsung Galaxy A35 5G gets hot or shows a temperature warning

Samsung Galaxy A35 5G gets hot or shows a temperature warning: high workload, charging, signal search, environment and a failing battery must be separated. Scoped to SM-A356*, with the model boundary and safe stop points made explicit.

Open record Samsung · GPS

Samsung Galaxy A35 5G GPS or location is inaccurate

Samsung Galaxy A35 5G GPS or location is inaccurate: app permission, precise-location setting, outdoor satellite view, network assistance and sensor calibration should be separated. Scoped to SM-A356*, with the model boundary and safe stop points made explicit.

Open record Samsung · no service

Samsung Galaxy A35 5G has no cellular service or data

Samsung Galaxy A35 5G has no cellular service or data: carrier outage/account/provisioning, SIM/eSIM, coverage, line selection and device radio should be separated. Scoped to SM-A356*, with the model boundary and safe stop points made explicit.

Open record Samsung · microphone

Samsung Galaxy A35 5G microphone is quiet, muffled or not working

Samsung Galaxy A35 5G microphone is quiet, muffled or not working: different apps and call modes use different microphones. Scoped to SM-A356*, with the model boundary and safe stop points made explicit.

Open record Samsung · notifications

Samsung Galaxy A35 5G notifications are delayed or missing

Samsung Galaxy A35 5G notifications are delayed or missing: app permission, channel/category, Focus modes, background restriction, account sync and network should be separated. Scoped to SM-A356*, with the model boundary and safe stop points made explicit.

Open record Samsung · not syncing

Samsung Galaxy A35 5G photos, contacts, messages or account data will not sync

Samsung Galaxy A35 5G photos, contacts, messages or account data will not sync: account status, cloud capacity, network, permissions and local storage should be separated before sign-out. Scoped to SM-A356*, with the model boundary and safe stop points made explicit.

Open record Samsung · touchscreen

Samsung Galaxy A35 5G screen or touch input is not working correctly

Samsung Galaxy A35 5G screen or touch input is not working correctly: one app/region, moisture, protector/case, charger interference and display hardware should be separated. Scoped to SM-A356*, with the model boundary and safe stop points made explicit.

Open record Samsung · update failed

Samsung Galaxy A35 5G software update will not download or install

Samsung Galaxy A35 5G software update will not download or install: eligibility, power, storage, network, date/time and update service should be checked before recovery. Scoped to SM-A356*, with the model boundary and safe stop points made explicit.

Open record Samsung · speaker

Samsung Galaxy A35 5G speaker is quiet, distorted or has no sound

Samsung Galaxy A35 5G speaker is quiet, distorted or has no sound: earpiece, loudspeaker, Bluetooth routing, app audio and obstruction should be separated. Scoped to SM-A356*, with the model boundary and safe stop points made explicit.

Open record Samsung · storage full

Samsung Galaxy A35 5G storage is full or the device cannot install updates

Samsung Galaxy A35 5G storage is full or the device cannot install updates: large media, downloads, app caches and system-update reserve should be measured before deletion. Scoped to SM-A356*, with the model boundary and safe stop points made explicit.

Open record Samsung · not charging

Samsung Galaxy A35 5G will not charge or charges slowly

Samsung Galaxy A35 5G will not charge or charges slowly: power source, cable/adapter, port debris/liquid, temperature and battery protection should be separated. Scoped to SM-A356*, with the model boundary and safe stop points made explicit.

Open record Samsung · Wi-Fi

Samsung Galaxy A35 5G will not connect to Wi-Fi or keeps disconnecting

Samsung Galaxy A35 5G will not connect to Wi-Fi or keeps disconnecting: one network, all networks, VPN/profile and radio hardware produce different fixes. Scoped to SM-A356*, with the model boundary and safe stop points made explicit.

Open record Samsung · Bluetooth

Samsung Galaxy A35 5G will not pair or stay connected over Bluetooth

Samsung Galaxy A35 5G will not pair or stay connected over Bluetooth: accessory pairing state, competing hosts, profile support and radio issues should be isolated. Scoped to SM-A356*, with the model boundary and safe stop points made explicit.

Open record Samsung · app crashing

Samsung Galaxy A54 5G app keeps crashing, freezing or will not open

Samsung Galaxy A54 5G app keeps crashing, freezing or will not open: one app versus the operating system, storage and service state determines the safe sequence. Scoped to SM-A546*, with the model boundary and safe stop points made explicit.

Open record Samsung · battery drain

Samsung Galaxy A54 5G battery drains too quickly

Samsung Galaxy A54 5G battery drains too quickly: recent update/indexing, screen/radio use, background activity, signal and battery condition should be measured before replacement. Scoped to SM-A546*, with the model boundary and safe stop points made explicit.

Open record Samsung · biometric unlock

Samsung Galaxy A54 5G biometric unlock is not working

Samsung Galaxy A54 5G biometric unlock is not working: sensor obstruction, enrolled appearance/finger, protector, environment and hardware should be separated. Scoped to SM-A546*, with the model boundary and safe stop points made explicit.

Open record Samsung · camera blurry

Samsung Galaxy A54 5G camera is blurry, shakes or will not focus

Samsung Galaxy A54 5G camera is blurry, shakes or will not focus: lens contamination, case magnets, one app/lens and camera hardware should be separated. Scoped to SM-A546*, with the model boundary and safe stop points made explicit.

Open record Samsung · calls

Samsung Galaxy A54 5G cannot make calls or send messages

Samsung Galaxy A54 5G cannot make calls or send messages: carrier service, selected line, account activation, recipient-specific block and messaging service should be separated. Scoped to SM-A546*, with the model boundary and safe stop points made explicit.

Open record Samsung · overheating

Samsung Galaxy A54 5G gets hot or shows a temperature warning

Samsung Galaxy A54 5G gets hot or shows a temperature warning: high workload, charging, signal search, environment and a failing battery must be separated. Scoped to SM-A546*, with the model boundary and safe stop points made explicit.

Open record Samsung · GPS

Samsung Galaxy A54 5G GPS or location is inaccurate

Samsung Galaxy A54 5G GPS or location is inaccurate: app permission, precise-location setting, outdoor satellite view, network assistance and sensor calibration should be separated. Scoped to SM-A546*, with the model boundary and safe stop points made explicit.

Open record Samsung · no service

Samsung Galaxy A54 5G has no cellular service or data

Samsung Galaxy A54 5G has no cellular service or data: carrier outage/account/provisioning, SIM/eSIM, coverage, line selection and device radio should be separated. Scoped to SM-A546*, with the model boundary and safe stop points made explicit.

Open record Samsung · microphone

Samsung Galaxy A54 5G microphone is quiet, muffled or not working

Samsung Galaxy A54 5G microphone is quiet, muffled or not working: different apps and call modes use different microphones. Scoped to SM-A546*, with the model boundary and safe stop points made explicit.

Open record Samsung · notifications

Samsung Galaxy A54 5G notifications are delayed or missing

Samsung Galaxy A54 5G notifications are delayed or missing: app permission, channel/category, Focus modes, background restriction, account sync and network should be separated. Scoped to SM-A546*, with the model boundary and safe stop points made explicit.

Open record Samsung · not syncing

Samsung Galaxy A54 5G photos, contacts, messages or account data will not sync

Samsung Galaxy A54 5G photos, contacts, messages or account data will not sync: account status, cloud capacity, network, permissions and local storage should be separated before sign-out. Scoped to SM-A546*, with the model boundary and safe stop points made explicit.

Open record Samsung · touchscreen

Samsung Galaxy A54 5G screen or touch input is not working correctly

Samsung Galaxy A54 5G screen or touch input is not working correctly: one app/region, moisture, protector/case, charger interference and display hardware should be separated. Scoped to SM-A546*, with the model boundary and safe stop points made explicit.

Open record Samsung · update failed

Samsung Galaxy A54 5G software update will not download or install

Samsung Galaxy A54 5G software update will not download or install: eligibility, power, storage, network, date/time and update service should be checked before recovery. Scoped to SM-A546*, with the model boundary and safe stop points made explicit.

Open record Samsung · speaker

Samsung Galaxy A54 5G speaker is quiet, distorted or has no sound

Samsung Galaxy A54 5G speaker is quiet, distorted or has no sound: earpiece, loudspeaker, Bluetooth routing, app audio and obstruction should be separated. Scoped to SM-A546*, with the model boundary and safe stop points made explicit.

Open record Samsung · storage full

Samsung Galaxy A54 5G storage is full or the device cannot install updates

Samsung Galaxy A54 5G storage is full or the device cannot install updates: large media, downloads, app caches and system-update reserve should be measured before deletion. Scoped to SM-A546*, with the model boundary and safe stop points made explicit.

Open record Samsung · not charging

Samsung Galaxy A54 5G will not charge or charges slowly

Samsung Galaxy A54 5G will not charge or charges slowly: power source, cable/adapter, port debris/liquid, temperature and battery protection should be separated. Scoped to SM-A546*, with the model boundary and safe stop points made explicit.

Open record Samsung · Wi-Fi

Samsung Galaxy A54 5G will not connect to Wi-Fi or keeps disconnecting

Samsung Galaxy A54 5G will not connect to Wi-Fi or keeps disconnecting: one network, all networks, VPN/profile and radio hardware produce different fixes. Scoped to SM-A546*, with the model boundary and safe stop points made explicit.

Open record Samsung · Bluetooth

Samsung Galaxy A54 5G will not pair or stay connected over Bluetooth

Samsung Galaxy A54 5G will not pair or stay connected over Bluetooth: accessory pairing state, competing hosts, profile support and radio issues should be isolated. Scoped to SM-A546*, with the model boundary and safe stop points made explicit.

Open record Samsung · app crashing

Samsung Galaxy A55 5G app keeps crashing, freezing or will not open

Samsung Galaxy A55 5G app keeps crashing, freezing or will not open: one app versus the operating system, storage and service state determines the safe sequence. Scoped to SM-A556*, with the model boundary and safe stop points made explicit.

Open record Samsung · battery drain

Samsung Galaxy A55 5G battery drains too quickly

Samsung Galaxy A55 5G battery drains too quickly: recent update/indexing, screen/radio use, background activity, signal and battery condition should be measured before replacement. Scoped to SM-A556*, with the model boundary and safe stop points made explicit.

Open record Samsung · biometric unlock

Samsung Galaxy A55 5G biometric unlock is not working

Samsung Galaxy A55 5G biometric unlock is not working: sensor obstruction, enrolled appearance/finger, protector, environment and hardware should be separated. Scoped to SM-A556*, with the model boundary and safe stop points made explicit.

Open record Samsung · camera blurry

Samsung Galaxy A55 5G camera is blurry, shakes or will not focus

Samsung Galaxy A55 5G camera is blurry, shakes or will not focus: lens contamination, case magnets, one app/lens and camera hardware should be separated. Scoped to SM-A556*, with the model boundary and safe stop points made explicit.

Open record Samsung · calls

Samsung Galaxy A55 5G cannot make calls or send messages

Samsung Galaxy A55 5G cannot make calls or send messages: carrier service, selected line, account activation, recipient-specific block and messaging service should be separated. Scoped to SM-A556*, with the model boundary and safe stop points made explicit.

Open record Samsung · overheating

Samsung Galaxy A55 5G gets hot or shows a temperature warning

Samsung Galaxy A55 5G gets hot or shows a temperature warning: high workload, charging, signal search, environment and a failing battery must be separated. Scoped to SM-A556*, with the model boundary and safe stop points made explicit.

Open record

Product lines

How the 33 Samsung families here actually differ

These are not marketing tiers. Each group below behaves differently under diagnosis, which is why a procedure written for one does not transfer to another, and it is the first thing to settle before following any fix.

Samsung Galaxy family; S Pen, foldable display, DeX, USB moisture and One UI features vary by exact model.

Galaxy S25 Ultra SM-S938*
Galaxy S25+ SM-S936*
Galaxy S25 SM-S931*
Galaxy S24 Ultra SM-S928*
Galaxy S24+ SM-S926*
Galaxy S24 SM-S921*
Galaxy S23 Ultra SM-S918*
Galaxy S23+ SM-S916*
Galaxy S23 SM-S911*
Galaxy S22 Ultra SM-S908*
Galaxy S22+ SM-S906*
Galaxy S22 SM-S901*
Galaxy A55 5G SM-A556*
Galaxy A54 5G SM-A546*
Galaxy A35 5G SM-A356*
Galaxy A25 5G SM-A256*
Galaxy Tab S10 Ultra SM-X920/SM-X926*
Galaxy Tab S9 series SM-X710/SM-X716/SM-X810/SM-X816/SM-X910/SM-X916*
Galaxy Tab A9+ SM-X210/SM-X216*

Foldable device; distinguish cover display, main display, hinge and S Pen behavior.

Galaxy Z Fold6 SM-F956*

Foldable device; distinguish cover screen, main display, hinge and Flex mode.

Galaxy Z Flip6 SM-F741*

Foldable device; distinguish cover/main display and hinge behavior.

Galaxy Z Fold5 SM-F946*

Foldable device; distinguish Flex Window/main display and hinge behavior.

Galaxy Z Flip5 SM-F731*

Current Galaxy family; confirm the complete SM identifier, region and One UI version before repair or firmware instructions.

Galaxy S26 Ultra 2026 Galaxy S26 Ultra; confirm SM-S identifier
Galaxy S26+ 2026 Galaxy S26+; confirm SM-S identifier
Galaxy S26 2026 Galaxy S26; confirm SM-S identifier
Galaxy S21 Ultra SM-G998*
Galaxy S21+ SM-G996*
Galaxy S21 SM-G991*
Galaxy S20 Ultra SM-G988*
Galaxy S20 family SM-G980/SM-G981/SM-G985/SM-G986*
Galaxy Note20 Ultra SM-N986*
Galaxy Note20 SM-N980/SM-N981*

Find your model

Model numbers covered, and where each one's answers are

Match the identifier on your appliance or device label to a row below. Samsung answers here are scoped to these patterns, and a model outside them is deliberately not claimed rather than covered by a page that guesses.

Family	Model numbers	Published specs
Galaxy S25 Ultra	SM-S938*	12 researched
Galaxy S25+	SM-S936*	3 researched
Galaxy S25	SM-S931*	13 researched
Galaxy S24 Ultra	SM-S928*	12 researched
Galaxy S24+	SM-S926*	3 researched
Galaxy S24	SM-S921*	13 researched
Galaxy S23 Ultra	SM-S918*	3 researched
Galaxy S23+	SM-S916*	3 researched
Galaxy S23	SM-S911*	3 researched
Galaxy S22 Ultra	SM-S908*	3 researched
Galaxy S22+	SM-S906*	3 researched
Galaxy S22	SM-S901*	3 researched
Galaxy A55 5G	SM-A556*	3 researched
Galaxy A54 5G	SM-A546*	3 researched
Galaxy A35 5G	SM-A356*	3 researched
Galaxy A25 5G	SM-A256*	3 researched
Galaxy Tab S10 Ultra	SM-X920/SM-X926*	3 researched
Galaxy Tab S9 series	SM-X710/SM-X716/SM-X810/SM-X816/SM-X910/SM-X916*	3 researched
Galaxy Tab A9+	SM-X210/SM-X216*	3 researched
Galaxy Z Fold6	SM-F956*	3 researched
Galaxy Z Flip6	SM-F741*	3 researched
Galaxy Z Fold5	SM-F946*	3 researched
Galaxy Z Flip5	SM-F731*	3 researched
Galaxy S26 Ultra	2026 Galaxy S26 Ultra; confirm SM-S identifier	3 researched
Galaxy S26+	2026 Galaxy S26+; confirm SM-S identifier	3 researched
Galaxy S26	2026 Galaxy S26; confirm SM-S identifier	3 researched
Galaxy S21 Ultra	SM-G998*	3 researched
Galaxy S21+	SM-G996*	3 researched
Galaxy S21	SM-G991*	3 researched
Galaxy S20 Ultra	SM-G988*	3 researched
Galaxy S20 family	SM-G980/SM-G981/SM-G985/SM-G986*	3 researched
Galaxy Note20 Ultra	SM-N986*	3 researched
Galaxy Note20	SM-N980/SM-N981*	3 researched

Structured depth, not empty permutations

Every published record carries a direct answer, scope, ordered fixes, risk notes and sources.

Device and manufacturer hubs share a consistent record system, but each answer carries the relevant controls, fault boundaries, consequences and official support entry point for that platform.

See the publication gate