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Samsung SCH A670 Troubleshooting




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Phone Won't Turn On

When the power button is pressed, screen remains black, and the phone won't turn on

Bad keypad connection

Make sure that you are holding the end button for at least 2 seconds. If after pressing the button for at least two seconds, your phone still does not turn on, hold the button for 3 to 4 seconds several times. If it does not turn on, it is possible something is lodged below the keypad. If this is the case, the keypad may need to be removed and cleaned under.

Bad battery

Your phone may have insufficient power to turn on. Try plugging your phone into your Samsung power charger. On the inside screen of the phone a battery power symbol should be displayed. If this symbol is not displayed, then it is an indication there may be something physically wrong with your battery. The Battery may need to be replaced.

Bad logic board

If none of the previous steps worked, the logic board may require replacing.

Phone Won't Ring

Phone fails to make a sound to alert for an incoming call

Phone settings

Make sure that your phone is properly turned off silent mode. To make sure you are out of silent hold the pound button (#) for a short period of time. Your screen should flash with the words, “Exit silent mode” or “Entering silent mode”, depending whether or not it is or is not in silent mode. Your phone may also be in vibrate mode. If so a small icon of your phone shaking will appear on your screen. Push the volume keypad on the side of your phone to increase the volume

Bad Keypad Connection

If there is a bad keypad connection when you press the pound button your phone may not change from silent mode to ring. A faulty keypad connection could also occur with the volume keypad on the side of your phone. If this is the case, the keypad may need to be removed and cleaned under.

Bad speaker

It is recommended that you retry some of the previous steps. If they don’t work again, then there may be something wrong with your speaker. If that is the case the speaker may have to be replaced.

Keys won't work

Pressing keys illicits no response from the phone

Dirty Keys

Your keys might have dirt in them that keeps the keystrokes from being registered. This may happen on some or all keys, and the effected keys might be hard to depress or have a gritty feel. If this is the case, the keypad may need to be removed and cleaned under.

Bad logic board

The circuitry for the keypad is on the logic board of the phone, it may be damaged in some way. If this is the case, the logic board may need to be replaced.

Phone won't charge

When plugged in the phone fails to charge

Debris in the charging port

The phone's charging port may have debris lodged in it such as pocket lint, dirt, sand, etc. If this is the case, repair may be as simple as removing the debris with a paper clip or toothpick.

Dead battery

Batteries will sometimes lose their charge potential after long usage. If this is the case, the battery may need to be replaced.

Bad charger

It is possible no current is getting to the phone because of a broken charger. If this is the case, the charger may need to be replaced.

Bad outlet

It is possible the wall outlet the charger is plugged into is not supplying current to the charger. If this is the case, try another outlet.



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