Question about Samsung Galaxy Centura SCH-S738C Smartphone - Wireless LAN - 3G - Bar - Gray Straight Talk - Prepay Pack SIM - Android 4.0 Ice Cream Sandwich - Qualcomm Single-core 1 Core 800 MHz - 4 GB - 3.5" - LCD 480 x 320 - Touchscreen - 3 Megapixel - CameraDual Band GP

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Phone freezes and locks

My phone constantly locks and freezes. i am ALWAYS removing the battery to get the phone working and even doing that causes the phone to take forever to work. can ANYONE HELP?!!! IM DESPERATE

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  • 17 Answers

Here's the deal.. go for hard reset or hard reformat. it should delete all files.. all in all , locks and freezes are not phone malfunction, it happens to me and i think your phone carrying a virus or a worm!

Posted on Mar 18, 2014

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6ya6ya
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Posted on Jan 02, 2017

  • 2 Answers

SOURCE: i i forgot my phone lock code for my samsung sgh-f480

hard reset *2767*3855#


All Samsung Hard Reset Codes
In those steps:

1.)*2767*3855#
2.)*7465625*638*00000000*00000000#
3.)#7465625*638*00000000#

Now your phone is unlock forever Permanent



Here is Samsung F480 Secret Codes

Admin Settings: *#6984125*#
Admin Settings
Internals (sub menu): *#9072641*#
Developer Settings: *#0523#
Camera test mode:
Press *#36287# key string in the dial screen to enter camera test mode -
[1] Auto focus [On]
[2] ISP firmware write
[3] ISP firmware version check

[1] Press the "1" key to disable auto focus. In order to enable auto focus, press the "1" key again.

[2] Press the "2" key to write the ISP (Camera Module) firmware. “ISP firmware write [Please wait]” will be displayed during 2 minutes. Then "ISP firmware write [SUCCESS]” will be displayed when the firmware upload finished.

Posted on Feb 15, 2010

  • 2 Answers

SOURCE: my phone keeps locking up

Chang it's battery connector

Posted on Apr 01, 2011

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Good day. remove the battery and memory card, then try to open after awhile. Erase all the files from your phone memory, never use the phone memory for storing large files, this may cause your phone of getting slow and get freeze. If still not work, I advice you to reformat your phone for better cure. Thanks

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For got my lock c0de


Please contact the manufacturer for an unlock code for this unit.
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GPS SYSTEMS HAVE A TENDENCY TO LOSE CONNECTIVITY TO SATILLITES BECAUSE OF BAD WEATHER, CLOUD COVER, TUNNEL ENTRANCE, BAD OR NO POWER, BATTERY LIFE HAS BEEN EXPENDED, HAZARD OF ELECTROMAGNETIC INTERFERENCE TO GPS SYSTEMS, AND IMPROPER VEHICLE MOUNTING AND HAND HELD POSITION. FREE SOLUTIONS 1. ALWAYS PLACE YOUR GPS DEVICE IN THE UPPERMOST PORTION OF YOUR VEHICLE SO THAT THE GPS SIGNAL MAY EASILY LOCATE YOUR DEVICE EVEN WHEN THE WEATHER IS BAD 2. KEEP YOUR BATTERY CHARGED ONLY WHEN IT NEEDS IT MOST AND AVOID CHARGING OFTEN 3. IF YOU OVERCHARGE YOUR GPS DEVICE, YOU WILL EXPERIENCE BATTERY LEAKAGE, WHICH CAN EAT AWAY AT YOUR CLOTHING, DESTROY YOUR DEVICE IN SECONDS, AND CAUSE DAMAGE TO YOUR VEHICLE SEATS 4. YOUR GPS DEVICE HAS A TENDENCY TO FREEZE BECAUSE OF THE SIM AND MEMORY CHIPS LOCATED WITHIN IT 5. YOU CAN FIX THE FREEZING PROBLEM BY REMOVING THE SIM CHIP AND MEMORY CHIP AND RESTARTING YOUR SYSTEM 6. OTHER FREEZE PROBLEMS OCCUR BECAUSE THE DEVICE IS COLD WHEN IT IS KEPT IN THE VEHICLE AND CHIP CREEK OCCURS WHERE THE DEVICES MICROCHIPS BECOME LOOSE AND TIGHTEND BECAUSE OF WARM AND COLDER AIR FLUCTUATIONS. IT IS BEST TO KEEP THE DEVICE IN A PURSE OR ON A TABLE WHERE IT IS NOT SUBJECT TO CONSTANT TEMP. CHANGE 7. PREVENTION OF ELECTROMAGNETIC INTERFERENCE IS BEST SOLVED BY: interference from devices located nearby, and even a radio turned on and located really close to your unit. This is normally known as electromagnetic interference to electronics and is very common

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The batteries in those devices are Li-Ion battery (look it up on wikipedia, if you want chemical details). They are VERY sensitive to deep discharging.
They are composed of several cells - and even one deep-discharge can fry at least one. In that case, polarity in this particular cell drops and can even be reversed, rendering the battery useless.

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